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Care Guide
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Onion
Onion
Onion
Onion
Onion
Onion
Onion
Allium cepa
Also known as : Garden onion, Common onion
Onion (Allium cepa) is an onion species commonly known for its ubiquitous culinary applications. The onion is toxic to a variety of animals. Aside from its many culinary uses, the onion is often used to teach students how to use a microscope because its cells are very large and easy to visualize.
Water
Water
Every 1-2 weeks
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Sunlight
Sunlight
Full sun
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Toxic to Pets
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care guide

Care Guide for Onion

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Watering Care
Watering Care
Onion is sensitive to water requirements. You need to water them every week using a sprinkler or a hose. Alternatively, you can irrigate to a depth of 2.5 inches. Plus, make sure the soil is well-draining and does not make the roots soggy.
Details on Watering Care Watering Care
Fertilizing Care
Fertilizing Care
Onion requires high levels of nitrogen in the soil. It usually becomes crucial to provide them with fertilizer with a high concentration of nitrogen. You should add more fertilizer during the first two to three weeks of planting.
Details on Fertilizing Care Fertilizing Care
Pruning
Pruning
Trim the dead, diseased, overgrown branches in winter.
Details on Pruning Pruning
Soil Care
Soil Care
Sand, Loam, Chalky, Clay, Neutral, Alkaline
Details on Soil Care Soil Care
Repotting
Repotting
Needs excellent drainage in pots.
Details on Repotting Repotting
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Onion
Water
Water
Every 1-2 weeks
Sunlight
Sunlight
Full sun
Hardiness Zones
Hardiness Zones
4 to 11
Planting Time
Planting Time
Spring, Summer, Fall, Mid winter, Late winter
question

Questions About Onion

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Watering Watering Watering
Pruning Pruning Pruning
Sunlight Sunlight Sunlight
Temperature Temperature Temperature
Fertilizing Fertilizing Fertilizing
What should I do if I water Onion too much/too little?
Over-watered Onion will develop yellow leaves. It is normal for yellow leaves to develop when Onion has reached the end of their blooming period. However, if the leaves turn yellow before the flowers have bloomed, it is a sign of over watering.
If you water your Onion too much, then try to ensure there is adequate drainage and do not give it any more water for a couple of days. You can mix some sawdust into the soil to absorb the moisture. If the situation continues to deteriorate after controlled watering, consider whether the seedpods have rotted. Try digging them up and checking whether they have changed color and become soft. Once you find severe decay, then you should promptly clean out these seedpods.
Under-watered Onion actually looks similar to over-watered Onion with their yellow leaves. However, the stems will also droop and leaves will look smaller and will curl. You may also see some brown patches appear.
If you have given your Onion too little water, then do not panic. It has a level of drought tolerance. Once you have realised, give it a good drink but do not saturate the surrounding soil. Just make sure it is moist.But do not give them too much and overwater them, you just need to let the soil to be mosit. Extended periods in water can lead to root rot and fungus growing on the bulb. The fungus can cause serious damage to the bulb which is noticed through spots that appear on the leaves and buds. The tips of the leaves may also discolor and die.
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How often should I water my Onion?
It very much depends on the location and the current growth state of your Onion.
Once you have planted your Onion, water them well once and then leave them. That initial watering will kick start their growth, but after that you can leave them be until you see shoots appear.
If your Onion is in a pot, you will need to water them when the top 1-2inch feels dry. Container plants can dry out faster than bedded plants, so ensure that the soil is damp.
If your Onion is planted outside in flower beds and borders, they will not require additional water if it has rained during the week.
The Onion has some drought resistance, slight dryness can be recovered quickly after watering, but excessive watering can directly cause the plant to die once the seed ball rots, you need to stay cautious about how often you water the plant.
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Should I adjust the watering frequency according to different seasons or climate for my Onion?
When your Onion is growing, you will need to water about once a week. As the temperature rises, the soil will dry out faster and you will need to increase the frequency of watering. A dry soil environment will be more friendly to your Onion than an excessively wet soil environment.
Onion will become dormant during summer and the above-ground parts will completely dry up and die after dormancy,. if you planted it outdoors, you shouldn't need to water it. Moreover, if there's plenty of rain in your region, you should consider digging them out to protect the buds from rot due to too much water.
If you planted it in pots, you should stop watering your Onion completely after the dormant part dries out. After the above-ground part dries out completely, dig up the buds and store them in a cool location or stop watering them completely to keep the soil dry. Resume watering until the next sowing season. Or keep them in the soil in a cool location until the next growing season.
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What should I look for when planting my Onion indoors or outdoors?
Monitor your containers for moisture, moving them to a sheltered position if they become sodden or waterlogged. Allow them to dry out and return them when the weather improves. Outdoor planting often takes rainwater into account, and when planting, you should consider planting the plants in well-drained soil to avoid waterlogging and decay.
Whether grown indoors or outdoors,before the buds grow out after planting the bulbs, they need very little water and you should try to let the soil dry out completely before watering in small amounts, which will effectively avoid bulb rot. You should wait to water them regularly until they grow new shoots.
Your Onion is more susceptible to rot indoors in low light and poor ventilation. Therefore, you need to be careful when watering indoors and make sure that a lot of the soil is dry before watering. If you can keep it moist for a long time indoors, you also need to consider if your Onion is in an unsuitable location. Whereas outdoors, good ventilation and plenty of light will be relatively safe.
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Key Facts About Onion

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Attributes of Onion

Lifespan
Perennial, Annual, Biennial
Plant Type
Herb
Planting Time
Spring, Summer, Fall, Mid winter, Late winter
Bloom Time
Summer
Harvest Time
Early spring, Mid spring, Summer, Early fall, Mid fall
Plant Height
15 cm to 45 cm
Spread
15 cm to 30 cm
Leaf Color
Green
Flower Size
2.5 cm
Flower Color
White
Fruit Color
Brown
Black
Stem Color
Green
White
Brown
Cream
Dormancy
Summer dormancy, Winter dormancy
Leaf type
Deciduous
Ideal Temperature
20 - 38 ℃
Growth Season
Summer
Pollinators
Bees

Name story

Garden onion
Cepa is commonly accepted in latin for "onion" and has an affinity with Ancient Greek. It is the most widely cultivated species of the genus Allium and many people treat it as a garden vegetable. Therefore, it is called the garden onion.

Symbolism

Protection, Exorcism, Healing

Usages

Garden Use
Onion is an easy-care onion variety that finds a popular place in many vegetable gardens. Its pretty tall-stalked flowers also bring eye-catching color to ornamental gardens. The flowers will attract bees, and they are lovely when cut for a vase. Leave room for natural propagation, but they pair well with wild grasses.

Scientific Classification of Onion

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Common Pests & Diseases About Onion

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Common issues for Onion based on 10 million real cases
Brown blotch yellow edge
Brown blotch yellow edge Brown blotch yellow edge
Brown blotch yellow edge
Brown spot is a fungal disease that attacks Onion, leading to browning of its leaves and potentially devastating crop yield. It's caused by pathogen Bipolaris spp. It usually occurs during warm, wet weather and can be managed via proper cultural practices and treatments.
Leaf rot
Leaf rot Leaf rot
Leaf rot
Leaf rot, a highly devastating disease, can significantly restrict Onion's growth and productivity. Typically caused by various fungi and bacteria, the disease can result in yellowing and wilting of leaves, ultimately leading to plant death if not properly managed.
Leaf blight
Leaf blight Leaf blight
Leaf blight
Leaf blight is a disease affecting many plant species including Onion. It is caused by widespread fungal pathogens like Alternaria, Botrytis, and Phytophthora, leading to severe declining in plant health and propagation. Rapid progression and high lethality increase the economic significance of this disease.
Aged yellow and dry
Aged yellow and dry Aged yellow and dry
Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Solutions: If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Flower withering
Flower withering Flower withering
Flower withering
Flowers may dry out due to a sudden change in environment or because the plant has completed its normal flowering period.
Solutions: If flower withering is a natural progression due to age, there is nothing that can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible. For lack of water, immediately water the plant using room temperature rainwater, bottled spring water, or filtered tap water. Water container plants until excess water drains out the bottom; water in-ground plants until the soil is soaked but there isn’t standing water on the surface. In the event of nutritional deficiencies, the best solution is to use a granular or water-soluble liquid fertilizer, and apply it to the soil at about half the recommended dosage. Keep it off the leaves and make sure granular products are watered into the soil well. If the plant is infected with a bacterial or fungal pathogen, there is no course of treatment that cures the diseased plants. The best solution is to remove the infected plants and dispose of the plant material off-site. Do not put in a compost pile.
Fruit withering
Fruit withering Fruit withering
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Solutions: There are a number of appropriate solutions to control fruit withering: Remove any fruit as soon as it shows any signs of infection. Do not compost. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
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Brown blotch yellow edge
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Brown blotch yellow edge Disease on Onion?
What is Brown blotch yellow edge Disease on Onion?
Brown spot is a fungal disease that attacks Onion, leading to browning of its leaves and potentially devastating crop yield. It's caused by pathogen Bipolaris spp. It usually occurs during warm, wet weather and can be managed via proper cultural practices and treatments.
Symptom Analysis
Symptom Analysis
Brown spot manifests on Onion as oval or elongated brown spots on the leaves. These lesions may enlarge and merge, causing the leaves to wither and fall off prematurely. Under severe conditions, it may affect overall crop growth.
What Causes Brown blotch yellow edge Disease on Onion?
What Causes Brown blotch yellow edge Disease on Onion?
1
Fungus
Brown spot is caused by the pathogen Bipolaris spp. which thrives in moist environments.
How to Treat Brown blotch yellow edge Disease on Onion?
How to Treat Brown blotch yellow edge Disease on Onion?
1
Non pesticide
Crop rotation: Switching Onion with other crops in consecutive growing seasons disrupts the life cycle of the fungus.

Remove infected plants: Promptly remove and destroy infected Onion plants to prevent the disease from spreading.
2
Pesticide
Fungicide application: Apply appropriate fungicides, following label directions, to control the fungus during favorable conditions.
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Leaf rot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf rot Disease on Onion?
What is Leaf rot Disease on Onion?
Leaf rot, a highly devastating disease, can significantly restrict Onion's growth and productivity. Typically caused by various fungi and bacteria, the disease can result in yellowing and wilting of leaves, ultimately leading to plant death if not properly managed.
Symptom Analysis
Symptom Analysis
Onion affected by leaf rot exhibits yellowing and wilting of leaves, often starting at the tips or edges. Over time, the leaves may display brown, water-soaked spots before wilting and dropping prematurely.
What Causes Leaf rot Disease on Onion?
What Causes Leaf rot Disease on Onion?
1
Fungi
Fusarium, Pythium, and Rhizoctonia species are common fungal pathogens causing leaf rot.
2
Bacteria
Erwinia carotovora is a common bacterial pathogen inducing leaf rot in Onion.
How to Treat Leaf rot Disease on Onion?
How to Treat Leaf rot Disease on Onion?
1
Non pesticide
Removal: Regularly removing and disposing of affected plants prevents the disease spread.

Drainage: Improving soil drainage can significantly reduce the disease incidence.
2
Pesticide
Fungicides: Applying fungicides helps in controlling fungal pathogens.

Bactericides: Spraying bactericides may effectively manage bacterial leaf rot.
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Leaf blight
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf blight Disease on Onion?
What is Leaf blight Disease on Onion?
Leaf blight is a disease affecting many plant species including Onion. It is caused by widespread fungal pathogens like Alternaria, Botrytis, and Phytophthora, leading to severe declining in plant health and propagation. Rapid progression and high lethality increase the economic significance of this disease.
Symptom Analysis
Symptom Analysis
Onion's leaf tips initially show small, whitish spots that darken and enlarge into streaks/blots. Infected leaves then curl, wilt, and ultimately die. In severe infections, the disease can spread to the bulb, causing it to soften and rot.
What Causes Leaf blight Disease on Onion?
What Causes Leaf blight Disease on Onion?
1
Fungi
Alternaria species are the primary pathogens causing Leaf blight in Onion.
2
Environment
Wet, warm conditions and dense plantings increase disease severity by encouraging fungal propagation.
3
Nutrient deficiency
Lack of essential nutrients weakens Onion, making them more susceptible to the disease.
How to Treat Leaf blight Disease on Onion?
How to Treat Leaf blight Disease on Onion?
1
Non pesticide
Removal and destruction: Uproot and burn infected plants to limit disease spread.

Plant spacing: Grow Onion at proper distances to improve air circulation and lower disease susceptibility.
2
Pesticide
Fungicides: Apply broad-spectrum fungicides to kill the disease-causing fungus. Always follow label instructions for correct usage.

Protective sprays: Regular, preventative application of antifungal sprays can curtail disease onset.
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Aged yellow and dry
plant poor
Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Overview
Overview
Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.
Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.
Symptom Analysis
Symptom Analysis
When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.
Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.
Disease Cause
Disease Cause
At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.
As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.
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Flower withering
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Flower withering
Flowers may dry out due to a sudden change in environment or because the plant has completed its normal flowering period.
Overview
Overview
Flower withering occurs when flowers become weak, droopy, wilted, or faded until they can’t be revived. During withering, they begin to wrinkle and shrink until the flower becomes completely dry or dead.
Any flowers, regardless of the plant type or the climate they are grown in, are susceptible to withering. It is a worldwide problem across houseplants, herbs, flowering ornamentals, trees, shrubs, garden vegetables, and food crops.
Unlike wilting—which withering is often confused with—withering can be caused by different things and is often due to more than a lack of water. Withering can be fatal in severe cases.
Symptom Analysis
Symptom Analysis
Flower withering progresses from very mild cases to severe occurrences that kill the flower. The severity of the symptoms is related to the cause and how long the condition is allowed to progress before action is taken.
  • Wilted, droopy flowers
  • Petals and leaves begin to wrinkle
  • Brown papery streaks or spots appear on the petals and leaf tips
  • Flowerhead shrink in size
  • Petal color fades
  • Yellowing leaves
  • Complete death of the flower
Disease Cause
Disease Cause
The main causes of flower withering include natural age progress, lack of water, nutritional deficiencies, and bacterial or fungal diseases. It’s critical to determine the underlying cause when flower withering is noticed. This will guide the best course of action, if treatment is possible.
Check the soil for moisture and then closely examine the entire plant for signs of nutrient deficiencies. If neither of those appears to be the cause then cut open the stem below a flower. If a cross-section reveals brown or rust-colored stains it is safe to assume that this is a bacterial or fungal infection.
If the flower is nearing the end of its normal lifespan, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence, or cell aging and death. Cell division stops and the plant begins breaking down resources within the flower to use in other parts of the plant.
In all other cases, flower withering happens when the plant seals off the stem as a defense mechanism, stopping transport within the vascular system. This prevents further water loss through the flowers but also stops bacteria and fungi from moving to healthy parts of the plant. Once water and nutrient transport stops, the flower begins to wither and ultimately die.
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Fruit withering
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Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Overview
Overview
Fruit withering is common on many tree fruits, including apples, pears, peaches, cherries, and plums, as well as fruiting shrubs. It is caused by a fungal pathogen and will result in wrinkled and desiccated fruit.
Symptom Analysis
Symptom Analysis
Here are the most common symptoms in the order that they are likely to occur.
  1. Both leaves and blossom on the tips of branches will go brown and wither.
  2. Gray powdery patches will appear on infected leaves and flowers, and this will be most apparent after rain.
  3. Any fruit that does appear will turn wrinkled and fail to develop.
  4. Branch tips begin to die, progressing back to larger branches, causing general deterioration of the tree or plant.
Disease Cause
Disease Cause
The withering is caused by one of two fungal pathogens, one called Monilina laxa and the other called M. fructigen. The spores overwinter on infected plant material and are then spread the following spring by wind, rain, or animal vectors. The problem will start to become noticeable in mid-spring, but will increase in severity as summer progresses and the fungus grows. If not addressed, the disease will intensify and spread to other plants in the vicinity.
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toxic

Onion and Their Toxicity

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* The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.
Toxic to Dogs
Toxic to Dogs
All parts of the onion plant are at least mildly toxic to dogs, but it is the bulb - the part most commonly prepared and eaten by humans - that typically causes the strongest reactions. Dogs often accidentally eat onions that are cooked in dishes they are given as table scraps. Vomiting, diarrhea, excessive drooling, and general gastrointestinal distress are all possible results. While these symptoms all may cause great discomfort to your pup, onion ingestion, thankfully, almost never causes severe or fatal reactions.
Toxic to Cats
Toxic to Cats
All onion species are toxic to cats, with the onion (Allium cepa) being the most toxic of them all. Every part of the plant, both above and below ground, is poisonous to felines. A cat that has eaten some will start to show signs of illness - which may include vomiting, excessive drooling, diarrhea, weakness, pale gums and/or abdominal pain - within 6-12 hours. Often, cats require veterinary treatment to fully recover. Even cooked onions are hazardous!
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Who Is Most at Risk of Plant Poisoning?
Your pets like cats and dogs can be poisoned by them as well!
1
Do not let your lovely pets eat any parts, nor contact with the sap of toxic or unknown plants;
2
It’s better to kill those growing around your house. Wear long-sleeved shirts, pants and gloves with sharp tools to dig it out completely;
3
Clean the tools with rubbing alcohol or soap and water but do not do that with bare hands;
4
Clean your hands and skin once exposed to plants with soap and water;
5
Consider using barrier creams that contain bentoquatam to prevent poison oak, ivy and sumac rashes;
6
Dump it in special trash cans in sealed garbage packages, and do not let your pets reach it;Do not let your lovely pets eat any parts, nor contact with the sap of toxic or unknown plants;
7
If you take your pets to hike with you in the wild, please don’t let them eat any plants that you don’t know;
8
Once your pets eat, touch or inhale anything from toxic plants and act abnormally, please call the doctors for help ASAP!
pets
Pets
Some pets are less likely than children to eat and touch just about everything. This is good, as a pet owner. However, you know your pet best, and it is up to you to keep them safe. There are plenty of poisonous weeds that can grow within the confines of your lawn, which might make your dogs or cats ill or worse if they eat them. Try to have an idea of what toxic plants grow in your area and keep them under control and your pets away from them.
pets
Common Toxic Houseplants
Common Toxic Houseplants
When it comes to decorating a house, there is nothing more refreshing than adding some beautiful houseplants. Some common house plants can also be toxic.

Aloe

aloe
Aloe is famous for its sunburn-soothing properties and its gorgeous desert design. However, many people do not realize that the latex the aloe vera plant produces can be mildly toxic to pets and children.

The latex contains a chemical compound known as saponin. Which when ingested, can cause vomiting, diarrhea, and low blood sugar. This, if left unchecked, can lead to dehydration and electrolyte imbalance. The proper response is to contact poison control or a veterinarian to know what to do in your particular circumstance if either your child or pet consumes aloe.

The latex of the plant is similar to the sap of the tree. It is inside the leaf, but sticks mainly toward the edges. If aloe gel is prepared properly it should be safe for use, but be sure to apply it only topically when treating burns.

Philodendron

Philodendron
Philodendron, also known as sweetheart vine, has become a resident at many houses and even businesses. They are glossy green and the leaves elegantly split, displaying interesting designs. Behind this beauty there is a needle-like toxin called calcium oxalate crystals.

These crystals are held within the plant and only affect you, your pets, or your loved ones if the plant tissue is broken. If ingested, the crystals can cause severe swelling, difficulty breathing, stomach pain, burning and pain. If they are accidentally caught on the skin, they can cause skin irritation.

If anyone accidentally ingests philodendron and they find it difficult to breathe or their tongue starts to swell up, it is important to seek medical attention immediately to avoid suffocation. If you have very young children or pets who have a tendency to tear at plants, keep them away from any philodendrons.

Peace Lily

Peace Lily
Peace lilies produce stunningly white flowers that bring to mind peace and serenity. This is one reason they are invited into our homes and given a place to stay. However, similar to philodendrons, the peace lily contains oxalate crystals known as raphides.

The raphides, once ingested, will cause swelling and burning sensations and can also cause skin irritation. Both pets and humans can get these symptoms so it is important to keep these plants from anyone who is likely to tear or chew it. Symptoms can become dire if the raphides cause the tongue and throat to swell to a point where the person or pet is having difficulty breathing. Seek proper medical attention if this is the case.

Snake Plant

Snake Plant
The snake plant is an interesting and popular house plant. Its stark architecture and wavy coloring has made it a fan favorite. This plant too, however, is toxic when ingested or if the sap touches your skin.

Snake plant sap will cause rashes if it comes into contact with your skin. In addition, it will cause diarrhea and vomiting when ingested. Again these symptoms are very serious and would be best avoided by keeping snake plants out of reach or by choosing a different houseplant.
Common Toxic Garden Plants
Common Toxic Garden Plants

Daffodil

Daffodil
Daffodils are a strikingly colorful flower. This can sometimes bring them much attention not from just onlooking adults but children as well. Since kids are more drawn to colorful objects, they may have a higher chance of just grabbing the flower and eating it. Adults have also been known to accidentally grab daffodil bulbs instead of onions.

Why are these mistakes so dangerous? Daffodils contain lycorine, which can induce nausea, vomiting, and diarrhea. It also contains oxalates which can cause swelling and pain. The symptoms can be worse in animals, because if your pets eat daffodils they may experience drowsiness, low blood pressure or even liver damage.

Make sure to call poison control when these symptoms set in. The vomiting and diarrhea have been known to go away after 3 hours, but it is better to be safe than sorry. Ingesting liquids to keep hydration up can be important. If the patient is having difficulty breathing, seek medical attention immediately.

Hydrangea

Hydrangea
Hydrangeas are unique, with their soft blue and pink flowers. They are a great addition to any garden, but should not be snacked on—not that you would want to. Hydrangeas can be especially nasty because they contain compounds known as glycosides. These will release hydrogen cyanide into the bloodstream when consumed. This will block your body’s ability to uptake oxygen to the cells in your body.

The way to combat this kind of poisoning is through getting IVs from the vet or doctor. It is important to contact your medical professional immediately since the symptoms can be fatal within minutes or hours.

Rhododendrons

Rhododendrons
Rhododendron, the state flower of Washington, is also toxic. The multitudinous, pink flowers can be quite dangerous. All parts of this plant are toxic, the leaves and seeds more so than the flowers. However, even the nectar of the flower is toxic and in the Mediterranean, where rhododendrons grow in more dense quantities, the honey from bees who gather rhododendron nectar can be poisonous.

Normally kids and pets do not eat enough to experience the full poisoning effect. However, just eating two leaves is enough to be considered dangerous. The grayanotoxin glycosides within the rhododendron can cause vomiting, diarrhea and irregular heartbeats. Things can get very serious when too much rhododendron is consumed and can lead to necessary medical intervention.

Start by calling poison control first if you suspect anyone has been munching on rhododendrons. The experts there will be able to help guide you through the necessary processes to cure your loved one.

Rhubarb

Rhubarb
Yummy rhubarb has a nasty side to it. While the stems are used in many recipes, including for rhubarb strawberry pie, the leaves are toxic. They contain oxalic acid which is known to blister the mouth, cause nausea, vomiting, diarrhea and kidney stones. The leaves are known to be more toxic to pets than humans, but in either case, it is important to contact poison control immediately to figure out necessary steps to cure the patient.
Common Toxic Weeds in the Yard
Common Toxic Weeds in the Yard

Bittersweet Nightshade

Bittersweet Nightshade
Nightshade is an invasive, noxious weed that is extremely poisonous. It has been found along the East and West Coast of the U.S. It makes its home in areas with disturbed soil. This could be near your garden or areas that have recently had bushes/trees put in.

These plants are dark green with purple flowers that develop into bright red berries. The whole plant is toxic and should be avoided by pets and children alike. If ingested it can cause nausea, vomiting, and diarrhea. The colorful berries are especially enticing to young children. If you see any plants that look similar to tomato or pepper plants that you did not plant in your yard, it is best to just pull them immediately.

Call poison control immediately if you think someone has fallen victim to nightshade.

Buttercups

Buttercups
Buttercups are found throughout the United States, especially in wet areas. The shiny, yellow flowers will pop up in the springtime, accompanying their dandelion friends. However, unlike dandelions, buttercups are not edible.

Buttercups will release a compound called protoanemonin. This toxin is known to cause vomiting, diarrhea, bloody stool, hypersalivation, depression, blisters, and more. These symptoms will affect both humans and animals. The sap may also cause irritation when it comes into contact with skin. These yellow flowers are dangerous and children should be observed cautiously when around them.

Foxgloves

Foxgloves
Foxgloves are beautiful plants that build towers out of vivid purple bell-shaped blossoms. They are very pretty to look at, but they contain a compound known as digoxin. This chemical is used in certain medicines to help people with certain heart conditions. However, the medicine is made by specialists, whereas someone eating foxgloves will receive unregulated amounts of the chemical.

This toxin can make you vomit and lower your heartbeat. This often causes dizziness and faintness. It is extremely important to call poison control immediately to know what to do in the case of foxglove poisoning. Some people have confused the young leaves of foxglove with borage, making adult foragers at risk as well as kids and pets.
How to Tend to or Get Rid of Toxic Plants
How to Tend to or Get Rid of Toxic Plants
Now that you know where to start with toxic plant identification, let us discuss how to either tend to the poisonous plants you decide to keep or get rid of them that plague your yard.

How to Tend to Poisonous Plants

Many plants that are toxic when ingested are also skin irritants. The philodendron is a good example of this. When the sap comes into contact with skin, it can cause a rash to form. To help protect yourself when tending to toxic plants, it is important to wear some sort of gloves.
Tend
Latex gloves may be the best solution due to their disposability. Regular gloves could potentially keep the poisonous sap on their surface. If the gloves aren’t cleaned then you could accidentally touch the irritant or pass it to someone else.

In addition you will want to plan where to keep your deadly beauties. If you have a toxic indoor plant try to keep it up high or out of reach of children and pets. This will keep accidents few and far between. Another idea is keeping your plants in areas that are usually inaccessible to children or pets. Areas such as an office, study room, or guest bedroom could be good locations. If applicable, you could also set up a terrarium for your little plant baby, making it more difficult for curious hands or paws to access.
tend2
If you plan to have outdoor plants, location will be key. You will want to put plants in an area that will be inaccessible to children, pets and even wild animals. You will probably want to avoid planting the plants in the front of your house if kids walk by on a regular basis, just to be cautious. Having the plants behind a fence will be best, but use your discretion when choosing a spot.

How to Get Rid of Poisonous Plants

plants
The easiest but possibly most controversial way to get rid of poisonous plants is by using herbicides. This can be especially easy if you own a grass lawn and use an herbicide that targets broadleaf (non-grass) species. You can find many herbicides meant for yard use by simply searching the term online. Once you have purchased the herbicide you will want to make sure to follow the label posted on the container. If you follow the instructions precisely, then everything should run smoothly for you.

If you don’t plan on using herbicides, there are a few organic methods you can use to try to get rid of toxic plants. You can manually pull the plants out of the ground. This is probably one of the most difficult methods because there is no assurance that you will get the whole plant out this way.

You can also try pouring boiling hot water or spraying white vinegar on the target plants. This may take more time than using a synthetic herbicide, but you can feel a little better about using these products.

You can also try to use wood chips to cover a certain area where you do not want anything to grow. This will not stop all the weeds, but the few that make it through can be easily picked by hand.
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Who Is Most at Risk of Plant Poisoning?
Everyone should keep the following in mind to prevent being poisoned:
1
Do not eat any parts, nor contact with the sap of toxic or unknown plants;
2
If you need to kill it, wear long-sleeved shirts, pants and gloves with sharp tools to dig it out completely;
3
Clean the tools with rubbing alcohol or soap and water but do not do that with bare hands;
4
Clean your hands and skin once exposed to plants with soap and water;
5
Consider using barrier creams that contain bentoquatam to prevent poison oak, ivy and sumac rashes;
6
Dump it in special trash cans in sealed garbage packages;
7
Wear properly when you hiking or working in the wilderness. Long pants, long sleeves, gloves, hiking shoes, etc., that protect you from being hurt by any plants;
8
Once you or your family aren’t feeling well after eating, touching or inhaling anything from toxic plants, please call your doctor for help ASAP!
Outdoor Workers
Outdoor Workers and Recreationalists
Those who enjoy the outdoors either as a hobby or as part of their work will rarely see a plant and decide to munch on it (although the scenario is not unheard of). However, they do tend to deal with moving through and brushing aside plants. These people are more at risk of being poisoned by touching toxic plants than by ingesting them.
Outdoor Workers
Foragers
Foragers
Foraging for food and medicinal plants is a desirable skill among people who want to feel at one with the land. This hobby can be very useful and enjoyable, but if done wrong , it can lead to disastrous effects. People who forage are picking and grabbing plants with the full intention of using those plants, most of the time to ingest them.
Foragers
Children
Children
While outdoor workers are more likely to touch poison and foragers are more likely to ingest poison, children can easily do both. These bundles of joy just love to run around and explore the world. They enjoy touching things and occasionally shoving random stuff in their mouth; this is a terrible combination with toxic plants in the mix.
If you let your children run about, it is important to know what are the local toxic plants that they could accidentally get into. Try to educate the children and steer them away from where the toxic plants are located.
Children
Common Toxic Houseplants
Common Toxic Houseplants
When it comes to decorating a house, there is nothing more refreshing than adding some beautiful houseplants. Some common house plants can also be toxic.

Aloe

aloe
Aloe is famous for its sunburn-soothing properties and its gorgeous desert design. However, many people do not realize that the latex the aloe vera plant produces can be mildly toxic to pets and children.

The latex contains a chemical compound known as saponin. Which when ingested, can cause vomiting, diarrhea, and low blood sugar. This, if left unchecked, can lead to dehydration and electrolyte imbalance. The proper response is to contact poison control or a veterinarian to know what to do in your particular circumstance if either your child or pet consumes aloe.

The latex of the plant is similar to the sap of the tree. It is inside the leaf, but sticks mainly toward the edges. If aloe gel is prepared properly it should be safe for use, but be sure to apply it only topically when treating burns.

Philodendron

Philodendron
Philodendron, also known as sweetheart vine, has become a resident at many houses and even businesses. They are glossy green and the leaves elegantly split, displaying interesting designs. Behind this beauty there is a needle-like toxin called calcium oxalate crystals.

These crystals are held within the plant and only affect you, your pets, or your loved ones if the plant tissue is broken. If ingested, the crystals can cause severe swelling, difficulty breathing, stomach pain, burning and pain. If they are accidentally caught on the skin, they can cause skin irritation.

If anyone accidentally ingests philodendron and they find it difficult to breathe or their tongue starts to swell up, it is important to seek medical attention immediately to avoid suffocation. If you have very young children or pets who have a tendency to tear at plants, keep them away from any philodendrons.

Peace Lily

Peace Lily
Peace lilies produce stunningly white flowers that bring to mind peace and serenity. This is one reason they are invited into our homes and given a place to stay. However, similar to philodendrons, the peace lily contains oxalate crystals known as raphides.

The raphides, once ingested, will cause swelling and burning sensations and can also cause skin irritation. Both pets and humans can get these symptoms so it is important to keep these plants from anyone who is likely to tear or chew it. Symptoms can become dire if the raphides cause the tongue and throat to swell to a point where the person or pet is having difficulty breathing. Seek proper medical attention if this is the case.

Snake Plant

Snake Plant
The snake plant is an interesting and popular house plant. Its stark architecture and wavy coloring has made it a fan favorite. This plant too, however, is toxic when ingested or if the sap touches your skin.

Snake plant sap will cause rashes if it comes into contact with your skin. In addition, it will cause diarrhea and vomiting when ingested. Again these symptoms are very serious and would be best avoided by keeping snake plants out of reach or by choosing a different houseplant.
Common Toxic Garden Plants
Common Toxic Garden Plants

Daffodil

Daffodil
Daffodils are a strikingly colorful flower. This can sometimes bring them much attention not from just onlooking adults but children as well. Since kids are more drawn to colorful objects, they may have a higher chance of just grabbing the flower and eating it. Adults have also been known to accidentally grab daffodil bulbs instead of onions.

Why are these mistakes so dangerous? Daffodils contain lycorine, which can induce nausea, vomiting, and diarrhea. It also contains oxalates which can cause swelling and pain. The symptoms can be worse in animals, because if your pets eat daffodils they may experience drowsiness, low blood pressure or even liver damage.

Make sure to call poison control when these symptoms set in. The vomiting and diarrhea have been known to go away after 3 hours, but it is better to be safe than sorry. Ingesting liquids to keep hydration up can be important. If the patient is having difficulty breathing, seek medical attention immediately.

Hydrangea

Hydrangea
Hydrangeas are unique, with their soft blue and pink flowers. They are a great addition to any garden, but should not be snacked on—not that you would want to. Hydrangeas can be especially nasty because they contain compounds known as glycosides. These will release hydrogen cyanide into the bloodstream when consumed. This will block your body’s ability to uptake oxygen to the cells in your body.

The way to combat this kind of poisoning is through getting IVs from the vet or doctor. It is important to contact your medical professional immediately since the symptoms can be fatal within minutes or hours.

Rhododendrons

Rhododendrons
Rhododendron, the state flower of Washington, is also toxic. The multitudinous, pink flowers can be quite dangerous. All parts of this plant are toxic, the leaves and seeds more so than the flowers. However, even the nectar of the flower is toxic and in the Mediterranean, where rhododendrons grow in more dense quantities, the honey from bees who gather rhododendron nectar can be poisonous.

Normally kids and pets do not eat enough to experience the full poisoning effect. However, just eating two leaves is enough to be considered dangerous. The grayanotoxin glycosides within the rhododendron can cause vomiting, diarrhea and irregular heartbeats. Things can get very serious when too much rhododendron is consumed and can lead to necessary medical intervention.

Start by calling poison control first if you suspect anyone has been munching on rhododendrons. The experts there will be able to help guide you through the necessary processes to cure your loved one.

Rhubarb

Rhubarb
Yummy rhubarb has a nasty side to it. While the stems are used in many recipes, including for rhubarb strawberry pie, the leaves are toxic. They contain oxalic acid which is known to blister the mouth, cause nausea, vomiting, diarrhea and kidney stones. The leaves are known to be more toxic to pets than humans, but in either case, it is important to contact poison control immediately to figure out necessary steps to cure the patient.
Common Toxic Weeds in the Yard
Common Toxic Weeds in the Yard

Bittersweet Nightshade

Bittersweet Nightshade
Nightshade is an invasive, noxious weed that is extremely poisonous. It has been found along the East and West Coast of the U.S. It makes its home in areas with disturbed soil. This could be near your garden or areas that have recently had bushes/trees put in.

These plants are dark green with purple flowers that develop into bright red berries. The whole plant is toxic and should be avoided by pets and children alike. If ingested it can cause nausea, vomiting, and diarrhea. The colorful berries are especially enticing to young children. If you see any plants that look similar to tomato or pepper plants that you did not plant in your yard, it is best to just pull them immediately.

Call poison control immediately if you think someone has fallen victim to nightshade.

Buttercups

Buttercups
Buttercups are found throughout the United States, especially in wet areas. The shiny, yellow flowers will pop up in the springtime, accompanying their dandelion friends. However, unlike dandelions, buttercups are not edible.

Buttercups will release a compound called protoanemonin. This toxin is known to cause vomiting, diarrhea, bloody stool, hypersalivation, depression, blisters, and more. These symptoms will affect both humans and animals. The sap may also cause irritation when it comes into contact with skin. These yellow flowers are dangerous and children should be observed cautiously when around them.

Foxgloves

Foxgloves
Foxgloves are beautiful plants that build towers out of vivid purple bell-shaped blossoms. They are very pretty to look at, but they contain a compound known as digoxin. This chemical is used in certain medicines to help people with certain heart conditions. However, the medicine is made by specialists, whereas someone eating foxgloves will receive unregulated amounts of the chemical.

This toxin can make you vomit and lower your heartbeat. This often causes dizziness and faintness. It is extremely important to call poison control immediately to know what to do in the case of foxglove poisoning. Some people have confused the young leaves of foxglove with borage, making adult foragers at risk as well as kids and pets.
How to Tend to or Get Rid of Toxic Plants
How to Tend to or Get Rid of Toxic Plants
Now that you know where to start with toxic plant identification, let us discuss how to either tend to the poisonous plants you decide to keep or get rid of them that plague your yard.

How to Tend to Poisonous Plants

Many plants that are toxic when ingested are also skin irritants. The philodendron is a good example of this. When the sap comes into contact with skin, it can cause a rash to form. To help protect yourself when tending to toxic plants, it is important to wear some sort of gloves.
Tend
Latex gloves may be the best solution due to their disposability. Regular gloves could potentially keep the poisonous sap on their surface. If the gloves aren’t cleaned then you could accidentally touch the irritant or pass it to someone else.

In addition you will want to plan where to keep your deadly beauties. If you have a toxic indoor plant try to keep it up high or out of reach of children and pets. This will keep accidents few and far between. Another idea is keeping your plants in areas that are usually inaccessible to children or pets. Areas such as an office, study room, or guest bedroom could be good locations. If applicable, you could also set up a terrarium for your little plant baby, making it more difficult for curious hands or paws to access.
tend2
If you plan to have outdoor plants, location will be key. You will want to put plants in an area that will be inaccessible to children, pets and even wild animals. You will probably want to avoid planting the plants in the front of your house if kids walk by on a regular basis, just to be cautious. Having the plants behind a fence will be best, but use your discretion when choosing a spot.

How to Get Rid of Poisonous Plants

plants
The easiest but possibly most controversial way to get rid of poisonous plants is by using herbicides. This can be especially easy if you own a grass lawn and use an herbicide that targets broadleaf (non-grass) species. You can find many herbicides meant for yard use by simply searching the term online. Once you have purchased the herbicide you will want to make sure to follow the label posted on the container. If you follow the instructions precisely, then everything should run smoothly for you.

If you don’t plan on using herbicides, there are a few organic methods you can use to try to get rid of toxic plants. You can manually pull the plants out of the ground. This is probably one of the most difficult methods because there is no assurance that you will get the whole plant out this way.

You can also try pouring boiling hot water or spraying white vinegar on the target plants. This may take more time than using a synthetic herbicide, but you can feel a little better about using these products.

You can also try to use wood chips to cover a certain area where you do not want anything to grow. This will not stop all the weeds, but the few that make it through can be easily picked by hand.
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distribution

Distribution of Onion

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Habitat of Onion

Cultivated Beds
Northern Hemisphere
South Hemisphere

Distribution Map of Onion

Onion is native to central Asia, possibly in the area that today is Turkmenistan. It is now spread quite widely across the northern hemisphere and is present in much of North America, Europe, North Africa, and Asia. It is extinct in the wild, but has been widely cultivated for 7,000 years.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
habit
care_scenes

More Info on Onion Growth and Care

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Basic Care Guide
Common Pests & Diseases
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Water
Every 1-2 weeks
Onion originates from Asia but has spread widely to encompass the globe. Its native environment ordinarily experiences moderate climate and rainfall, translating to the plant's significant watering needs. Regular watering avoids dehydration in onion, and a well-drained soil ensures non-stagnant moist conditions reminiscent of its natural habitat. Too dry or overly wet conditions are not ideal; therefore balanced, regular hydration in line with its original regions' climatic conditions allows onion to thrive.
Watering Techniques
Lighting
Full sun
Onion thrives under an abundance of solar radiation, proving resilient to somewhat filtered light but showing optimal growth in unobstructed sunlight. Its heritage as a plant accustomed to open, non-shaded habitats influences this. Overexposure might stress the plant, while too little sunlight could impede growth.
Best Sunlight Practices
Temperature
0 - 43 ℃
Onion is native to environments with moderate temperatures. Intolerance for cold habitats makes it thrive in regions averaging 68 to 100 °F (20 to 38 ℃). For optimal health, maintain temperatures within this range all year long, adjusting accordingly each season.
Temp for Healthy Growth
Transplant
3-4 inches
For onion, the best time to transplant is during the late spring transition to early summer, when temperatures and soil conditions are optimal. Choose a sunny location for your onion, ensuring proper spacing. Remember, a gentle touch is key when transplanting to avoid root damage.
Transplant Techniques
Pollination
Normal
The onion primarily relies on bees for pollination. Known for its vibrant blossoms and enticing scent, this plant effectively attracts bees, its main pollinators. As they collect nectar, their bodies brush against the pollen-laden anthers, leading to successful pollination. Timing is crucial, as pollination typically occurs in pristine weather during midday when bees are most active.
Pollination Techniques
Pruning
Spring, Winter
A bulbous perennial, onion is known for its layered, edible bulbs and hollow, tubular leaves. Prune by removing dead or diseased foliage throughout the year to maintain health. During the early growth phase, thin seedlings to avoid overcrowding, which ensures better air circulation and bulb development. The optimal pruning period is late winter to early spring, before new growth commences. Pruning benefits onion by preventing disease spread and promoting robust growth.
Pruning techniques
Propagation
Spring
Onion is primarily propagated through tubers in Spring. The process is relatively easy, with success indicated by newly sprouted green shoots. Ensure proper planting depth and maintain sufficient moisture for optimal growth.
Propagation Techniques
Brown blotch yellow edge
Brown spot is a fungal disease that attacks Onion, leading to browning of its leaves and potentially devastating crop yield. It's caused by pathogen Bipolaris spp. It usually occurs during warm, wet weather and can be managed via proper cultural practices and treatments.
Learn More About the Disease
Leaf rot
Leaf rot, a highly devastating disease, can significantly restrict Onion's growth and productivity. Typically caused by various fungi and bacteria, the disease can result in yellowing and wilting of leaves, ultimately leading to plant death if not properly managed.
Learn More About the Disease
Leaf blight
Leaf blight is a disease affecting many plant species including Onion. It is caused by widespread fungal pathogens like Alternaria, Botrytis, and Phytophthora, leading to severe declining in plant health and propagation. Rapid progression and high lethality increase the economic significance of this disease.
Learn More About the Disease
Toxic
Toxic to Pets
Onion is commonly used in human diet all over the world. However, it can also be poisonous to pets.
Toxic Details
Feng shui direction
Northwest
Onions (Allium cepa), or onion, might exhibit intriguing influences when in alignment with Feng Shui principles. Their vigorous growth could be harmonizing with the robust and independent energy of the Northwest direction. However, caution is advised since their potent odor might contradict the serene ambiance we associate with Feng Shui.
Fengshui Details
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Plants Related to Onion

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Cape jasmine
Cape jasmine
Gardenia jasminoides is an evergreen shrub with unique, glossy evergreen leaves and stunning flowers. The sophisticated, matte white flowers are often used in bouquets. The exceptional beauty of this ornamental plant has made it a popular and highly appreciated plant amongst gardeners and horticulturalists.
Corn poppy
Corn poppy
The corn poppy (Papaver rhoeas) is an annual flower that carries great symbolism in many cultures. During World War One, the corn poppy could be found blooming between trenches in France and Belgium; afterwards, it became an international symbol of fallen soldiers. This poppy does not produce opium.
Buddhist pine
Buddhist pine
The buddhist pine (*Podocarpus macrophyllus*) is a medium-sized evergreen conifer that can be trained as a bonsai tree, which is a form of Japanese horticultural art. In Feng Shui mysticism, the buddhist pine is considered to be very valuable, a fact that has led to illegal collection. The tree contains a mild toxin, so care should be exercised.
Virginia creeper
Virginia creeper
The virginia creeper is a North American vine from the grape family that has it all - vigorous growth, fragrant flowers, decorative blue-colored berries, and leaves that turn crimson in the fall. Using small forked tendrils with adhesive pads, the virginia creeper will cling strongly to almost all surfaces. It can grow over entire walls, providing shelter and food for wildlife.
Octopus tree
Octopus tree
The octopus tree is a large evergreen tree known for its distinctive drooping leaves. These leaves have earned it the nicknames "octopus tree" and "Australian umbrella tree." It is native to the Queensland area of Australia. Its root system is aggressive, however, so it can become invasive and choke out other species.
Belladonna lily
Belladonna lily
The belladonna lily is also known by the more risqué name "naked lady flower" due to the naked appearance of the long leafless stalk that leads up to the cluster of flowers. The belladonna lily is known to be a very temperamental plant, and making it thrive often seems to be a matter of luck.
Golden pothos
Golden pothos
The golden pothos (Epipremnum aureum) is a popular houseplant that is commonly seen in Australia, Asia, and the West Indies. It goes by many nicknames, including "devil's ivy", because it is so hard to kill and can even grow in low light conditions. Golden pothos has poisonous sap, so it should be kept away from pets and children.
Swiss cheese plant
Swiss cheese plant
The swiss cheese plant (Monstera deliciosa) produces bright, glossy leaves and makes a popular houseplant. It is originally native to tropical forest regions in Central America. The nickname swiss cheese plant refers to the small holes that develop in the plant's leaves. The long fruits resemble corncobs and smell sweet and fragrant when ripe.
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Onion
Onion
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Onion
Allium cepa
Also known as: Garden onion, Common onion
Onion (Allium cepa) is an onion species commonly known for its ubiquitous culinary applications. The onion is toxic to a variety of animals. Aside from its many culinary uses, the onion is often used to teach students how to use a microscope because its cells are very large and easy to visualize.
Water
Water
Every 1-2 weeks
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Sunlight
Sunlight
Full sun
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Toxic to Pets
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Questions About Onion

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Watering Watering Watering
Pruning Pruning Pruning
Sunlight Sunlight Sunlight
Temperature Temperature Temperature
Fertilizing Fertilizing Fertilizing
What should I do if I water Onion too much/too little?
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How often should I water my Onion?
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Should I adjust the watering frequency according to different seasons or climate for my Onion?
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Key Facts About Onion

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Attributes of Onion

Lifespan
Perennial, Annual, Biennial
Plant Type
Herb
Planting Time
Spring, Summer, Fall, Mid winter, Late winter
Bloom Time
Summer
Harvest Time
Early spring, Mid spring, Summer, Early fall, Mid fall
Plant Height
15 cm to 45 cm
Spread
15 cm to 30 cm
Leaf Color
Green
Flower Size
2.5 cm
Flower Color
White
Fruit Color
Brown
Black
Stem Color
Green
White
Brown
Cream
Dormancy
Summer dormancy, Winter dormancy
Leaf type
Deciduous
Ideal Temperature
20 - 38 ℃
Growth Season
Summer
Pollinators
Bees
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Name story

Garden onion
Cepa is commonly accepted in latin for "onion" and has an affinity with Ancient Greek. It is the most widely cultivated species of the genus Allium and many people treat it as a garden vegetable. Therefore, it is called the garden onion.

Symbolism

Protection, Exorcism, Healing

Usages

Garden Use
Onion is an easy-care onion variety that finds a popular place in many vegetable gardens. Its pretty tall-stalked flowers also bring eye-catching color to ornamental gardens. The flowers will attract bees, and they are lovely when cut for a vase. Leave room for natural propagation, but they pair well with wild grasses.

Scientific Classification of Onion

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pests

Common Pests & Diseases About Onion

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Common issues for Onion based on 10 million real cases
Brown blotch yellow edge
Brown blotch yellow edge Brown blotch yellow edge Brown blotch yellow edge
Brown spot is a fungal disease that attacks Onion, leading to browning of its leaves and potentially devastating crop yield. It's caused by pathogen Bipolaris spp. It usually occurs during warm, wet weather and can be managed via proper cultural practices and treatments.
Learn More About the Brown blotch yellow edge more
Leaf rot
Leaf rot Leaf rot Leaf rot
Leaf rot, a highly devastating disease, can significantly restrict Onion's growth and productivity. Typically caused by various fungi and bacteria, the disease can result in yellowing and wilting of leaves, ultimately leading to plant death if not properly managed.
Learn More About the Leaf rot more
Leaf blight
Leaf blight Leaf blight Leaf blight
Leaf blight is a disease affecting many plant species including Onion. It is caused by widespread fungal pathogens like Alternaria, Botrytis, and Phytophthora, leading to severe declining in plant health and propagation. Rapid progression and high lethality increase the economic significance of this disease.
Learn More About the Leaf blight more
Aged yellow and dry
Aged yellow and dry Aged yellow and dry Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Solutions: If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Learn More About the Aged yellow and dry more
Flower withering
Flower withering Flower withering Flower withering
Flowers may dry out due to a sudden change in environment or because the plant has completed its normal flowering period.
Solutions: If flower withering is a natural progression due to age, there is nothing that can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible. For lack of water, immediately water the plant using room temperature rainwater, bottled spring water, or filtered tap water. Water container plants until excess water drains out the bottom; water in-ground plants until the soil is soaked but there isn’t standing water on the surface. In the event of nutritional deficiencies, the best solution is to use a granular or water-soluble liquid fertilizer, and apply it to the soil at about half the recommended dosage. Keep it off the leaves and make sure granular products are watered into the soil well. If the plant is infected with a bacterial or fungal pathogen, there is no course of treatment that cures the diseased plants. The best solution is to remove the infected plants and dispose of the plant material off-site. Do not put in a compost pile.
Learn More About the Flower withering more
Fruit withering
Fruit withering Fruit withering Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Solutions: There are a number of appropriate solutions to control fruit withering: Remove any fruit as soon as it shows any signs of infection. Do not compost. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
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Brown blotch yellow edge
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Brown blotch yellow edge Disease on Onion?
What is Brown blotch yellow edge Disease on Onion?
Brown spot is a fungal disease that attacks Onion, leading to browning of its leaves and potentially devastating crop yield. It's caused by pathogen Bipolaris spp. It usually occurs during warm, wet weather and can be managed via proper cultural practices and treatments.
Symptom Analysis
Symptom Analysis
Brown spot manifests on Onion as oval or elongated brown spots on the leaves. These lesions may enlarge and merge, causing the leaves to wither and fall off prematurely. Under severe conditions, it may affect overall crop growth.
What Causes Brown blotch yellow edge Disease on Onion?
What Causes Brown blotch yellow edge Disease on Onion?
1
Fungus
Brown spot is caused by the pathogen Bipolaris spp. which thrives in moist environments.
How to Treat Brown blotch yellow edge Disease on Onion?
How to Treat Brown blotch yellow edge Disease on Onion?
1
Non pesticide
Crop rotation: Switching Onion with other crops in consecutive growing seasons disrupts the life cycle of the fungus.

Remove infected plants: Promptly remove and destroy infected Onion plants to prevent the disease from spreading.
2
Pesticide
Fungicide application: Apply appropriate fungicides, following label directions, to control the fungus during favorable conditions.
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Leaf rot
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf rot Disease on Onion?
What is Leaf rot Disease on Onion?
Leaf rot, a highly devastating disease, can significantly restrict Onion's growth and productivity. Typically caused by various fungi and bacteria, the disease can result in yellowing and wilting of leaves, ultimately leading to plant death if not properly managed.
Symptom Analysis
Symptom Analysis
Onion affected by leaf rot exhibits yellowing and wilting of leaves, often starting at the tips or edges. Over time, the leaves may display brown, water-soaked spots before wilting and dropping prematurely.
What Causes Leaf rot Disease on Onion?
What Causes Leaf rot Disease on Onion?
1
Fungi
Fusarium, Pythium, and Rhizoctonia species are common fungal pathogens causing leaf rot.
2
Bacteria
Erwinia carotovora is a common bacterial pathogen inducing leaf rot in Onion.
How to Treat Leaf rot Disease on Onion?
How to Treat Leaf rot Disease on Onion?
1
Non pesticide
Removal: Regularly removing and disposing of affected plants prevents the disease spread.

Drainage: Improving soil drainage can significantly reduce the disease incidence.
2
Pesticide
Fungicides: Applying fungicides helps in controlling fungal pathogens.

Bactericides: Spraying bactericides may effectively manage bacterial leaf rot.
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Leaf blight
Overview
Symptom
Causes
Treatment
Prevention
Active Period
What is Leaf blight Disease on Onion?
What is Leaf blight Disease on Onion?
Leaf blight is a disease affecting many plant species including Onion. It is caused by widespread fungal pathogens like Alternaria, Botrytis, and Phytophthora, leading to severe declining in plant health and propagation. Rapid progression and high lethality increase the economic significance of this disease.
Symptom Analysis
Symptom Analysis
Onion's leaf tips initially show small, whitish spots that darken and enlarge into streaks/blots. Infected leaves then curl, wilt, and ultimately die. In severe infections, the disease can spread to the bulb, causing it to soften and rot.
What Causes Leaf blight Disease on Onion?
What Causes Leaf blight Disease on Onion?
1
Fungi
Alternaria species are the primary pathogens causing Leaf blight in Onion.
2
Environment
Wet, warm conditions and dense plantings increase disease severity by encouraging fungal propagation.
3
Nutrient deficiency
Lack of essential nutrients weakens Onion, making them more susceptible to the disease.
How to Treat Leaf blight Disease on Onion?
How to Treat Leaf blight Disease on Onion?
1
Non pesticide
Removal and destruction: Uproot and burn infected plants to limit disease spread.

Plant spacing: Grow Onion at proper distances to improve air circulation and lower disease susceptibility.
2
Pesticide
Fungicides: Apply broad-spectrum fungicides to kill the disease-causing fungus. Always follow label instructions for correct usage.

Protective sprays: Regular, preventative application of antifungal sprays can curtail disease onset.
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Aged yellow and dry
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Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Overview
Overview
Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.
Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.
Symptom Analysis
Symptom Analysis
When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.
Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.
Disease Cause
Disease Cause
At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.
As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.
Solutions
Solutions
If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Prevention
Prevention
Unfortunately, there is no way to prevent plants from dying of “old age.” To help prolong their life, and put off symptoms of aged yellow and dry for as long as possible, take care of them by giving them enough water, fertilizing them appropriately, and making sure they get enough sunlight.
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Flower withering
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Flower withering
Flowers may dry out due to a sudden change in environment or because the plant has completed its normal flowering period.
Overview
Overview
Flower withering occurs when flowers become weak, droopy, wilted, or faded until they can’t be revived. During withering, they begin to wrinkle and shrink until the flower becomes completely dry or dead.
Any flowers, regardless of the plant type or the climate they are grown in, are susceptible to withering. It is a worldwide problem across houseplants, herbs, flowering ornamentals, trees, shrubs, garden vegetables, and food crops.
Unlike wilting—which withering is often confused with—withering can be caused by different things and is often due to more than a lack of water. Withering can be fatal in severe cases.
Symptom Analysis
Symptom Analysis
Flower withering progresses from very mild cases to severe occurrences that kill the flower. The severity of the symptoms is related to the cause and how long the condition is allowed to progress before action is taken.
  • Wilted, droopy flowers
  • Petals and leaves begin to wrinkle
  • Brown papery streaks or spots appear on the petals and leaf tips
  • Flowerhead shrink in size
  • Petal color fades
  • Yellowing leaves
  • Complete death of the flower
Disease Cause
Disease Cause
The main causes of flower withering include natural age progress, lack of water, nutritional deficiencies, and bacterial or fungal diseases. It’s critical to determine the underlying cause when flower withering is noticed. This will guide the best course of action, if treatment is possible.
Check the soil for moisture and then closely examine the entire plant for signs of nutrient deficiencies. If neither of those appears to be the cause then cut open the stem below a flower. If a cross-section reveals brown or rust-colored stains it is safe to assume that this is a bacterial or fungal infection.
If the flower is nearing the end of its normal lifespan, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence, or cell aging and death. Cell division stops and the plant begins breaking down resources within the flower to use in other parts of the plant.
In all other cases, flower withering happens when the plant seals off the stem as a defense mechanism, stopping transport within the vascular system. This prevents further water loss through the flowers but also stops bacteria and fungi from moving to healthy parts of the plant. Once water and nutrient transport stops, the flower begins to wither and ultimately die.
Solutions
Solutions
If flower withering is a natural progression due to age, there is nothing that can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
For lack of water, immediately water the plant using room temperature rainwater, bottled spring water, or filtered tap water. Water container plants until excess water drains out the bottom; water in-ground plants until the soil is soaked but there isn’t standing water on the surface.
In the event of nutritional deficiencies, the best solution is to use a granular or water-soluble liquid fertilizer, and apply it to the soil at about half the recommended dosage. Keep it off the leaves and make sure granular products are watered into the soil well.
If the plant is infected with a bacterial or fungal pathogen, there is no course of treatment that cures the diseased plants. The best solution is to remove the infected plants and dispose of the plant material off-site. Do not put in a compost pile.
Prevention
Prevention
This is definitely one of those instances where prevention is more effective than cure. Here are some preventative measures for avoiding premature flower withering.
  • Water plants according to their needs -- either keep the soil slightly moist or allow the top inch or two to dry out before watering again.
  • Fertilize lightly on a consistent basis, depending upon the plant’s growth. Quick-growing plants and those that flower or develop fruit will need more frequent fertilizing than slow-growing plants.
  • Purchase plants that are certified disease- or pathogen-free.
  • Look for disease-resistant cultivars.
  • Isolate plants showing disease symptoms to prevent the spread to neighboring plants.
  • Practice good plant hygiene by removing any fallen plant material as soon as possible.
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Fruit withering
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Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Overview
Overview
Fruit withering is common on many tree fruits, including apples, pears, peaches, cherries, and plums, as well as fruiting shrubs. It is caused by a fungal pathogen and will result in wrinkled and desiccated fruit.
Symptom Analysis
Symptom Analysis
Here are the most common symptoms in the order that they are likely to occur.
  1. Both leaves and blossom on the tips of branches will go brown and wither.
  2. Gray powdery patches will appear on infected leaves and flowers, and this will be most apparent after rain.
  3. Any fruit that does appear will turn wrinkled and fail to develop.
  4. Branch tips begin to die, progressing back to larger branches, causing general deterioration of the tree or plant.
Disease Cause
Disease Cause
The withering is caused by one of two fungal pathogens, one called Monilina laxa and the other called M. fructigen. The spores overwinter on infected plant material and are then spread the following spring by wind, rain, or animal vectors. The problem will start to become noticeable in mid-spring, but will increase in severity as summer progresses and the fungus grows. If not addressed, the disease will intensify and spread to other plants in the vicinity.
Solutions
Solutions
There are a number of appropriate solutions to control fruit withering:
  1. Remove any fruit as soon as it shows any signs of infection. Do not compost.
  2. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Prevention
Prevention
Preventative measures include:
  1. Ensuring adequate spacing between plants or trees.
  2. Staking plants that are prone to tumbling to prevent moisture or humidity build up.
  3. Prune correctly so that there is adequate air movement and remove any dead or diseased branches that may carry spores.
  4. Practice good plant hygiene by removing fallen material and destroying it as soon as possible.
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toxic

Onion and Their Toxicity

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Feedback
feedback
* The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.
Toxic to Dogs
All parts of the onion plant are at least mildly toxic to dogs, but it is the bulb - the part most commonly prepared and eaten by humans - that typically causes the strongest reactions. Dogs often accidentally eat onions that are cooked in dishes they are given as table scraps. Vomiting, diarrhea, excessive drooling, and general gastrointestinal distress are all possible results. While these symptoms all may cause great discomfort to your pup, onion ingestion, thankfully, almost never causes severe or fatal reactions.
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Toxic to Cats
All onion species are toxic to cats, with the onion (Allium cepa) being the most toxic of them all. Every part of the plant, both above and below ground, is poisonous to felines. A cat that has eaten some will start to show signs of illness - which may include vomiting, excessive drooling, diarrhea, weakness, pale gums and/or abdominal pain - within 6-12 hours. Often, cats require veterinary treatment to fully recover. Even cooked onions are hazardous!
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Who Is Most at Risk of Plant Poisoning?
Your pets like cats and dogs can be poisoned by them as well!
1
Do not let your lovely pets eat any parts, nor contact with the sap of toxic or unknown plants;
2
It’s better to kill those growing around your house. Wear long-sleeved shirts, pants and gloves with sharp tools to dig it out completely;
3
Clean the tools with rubbing alcohol or soap and water but do not do that with bare hands;
4
Clean your hands and skin once exposed to plants with soap and water;
5
Consider using barrier creams that contain bentoquatam to prevent poison oak, ivy and sumac rashes;
6
Dump it in special trash cans in sealed garbage packages, and do not let your pets reach it;Do not let your lovely pets eat any parts, nor contact with the sap of toxic or unknown plants;
7
If you take your pets to hike with you in the wild, please don’t let them eat any plants that you don’t know;
8
Once your pets eat, touch or inhale anything from toxic plants and act abnormally, please call the doctors for help ASAP!
pets
Pets
Some pets are less likely than children to eat and touch just about everything. This is good, as a pet owner. However, you know your pet best, and it is up to you to keep them safe. There are plenty of poisonous weeds that can grow within the confines of your lawn, which might make your dogs or cats ill or worse if they eat them. Try to have an idea of what toxic plants grow in your area and keep them under control and your pets away from them.
pets
Common Toxic Houseplants
Common Toxic Houseplants
When it comes to decorating a house, there is nothing more refreshing than adding some beautiful houseplants. Some common house plants can also be toxic.

Aloe

aloe
Aloe is famous for its sunburn-soothing properties and its gorgeous desert design. However, many people do not realize that the latex the aloe vera plant produces can be mildly toxic to pets and children.

The latex contains a chemical compound known as saponin. Which when ingested, can cause vomiting, diarrhea, and low blood sugar. This, if left unchecked, can lead to dehydration and electrolyte imbalance. The proper response is to contact poison control or a veterinarian to know what to do in your particular circumstance if either your child or pet consumes aloe.

The latex of the plant is similar to the sap of the tree. It is inside the leaf, but sticks mainly toward the edges. If aloe gel is prepared properly it should be safe for use, but be sure to apply it only topically when treating burns.

Philodendron

Philodendron
Philodendron, also known as sweetheart vine, has become a resident at many houses and even businesses. They are glossy green and the leaves elegantly split, displaying interesting designs. Behind this beauty there is a needle-like toxin called calcium oxalate crystals.

These crystals are held within the plant and only affect you, your pets, or your loved ones if the plant tissue is broken. If ingested, the crystals can cause severe swelling, difficulty breathing, stomach pain, burning and pain. If they are accidentally caught on the skin, they can cause skin irritation.

If anyone accidentally ingests philodendron and they find it difficult to breathe or their tongue starts to swell up, it is important to seek medical attention immediately to avoid suffocation. If you have very young children or pets who have a tendency to tear at plants, keep them away from any philodendrons.

Peace Lily

Peace Lily
Peace lilies produce stunningly white flowers that bring to mind peace and serenity. This is one reason they are invited into our homes and given a place to stay. However, similar to philodendrons, the peace lily contains oxalate crystals known as raphides.

The raphides, once ingested, will cause swelling and burning sensations and can also cause skin irritation. Both pets and humans can get these symptoms so it is important to keep these plants from anyone who is likely to tear or chew it. Symptoms can become dire if the raphides cause the tongue and throat to swell to a point where the person or pet is having difficulty breathing. Seek proper medical attention if this is the case.

Snake Plant

Snake Plant
The snake plant is an interesting and popular house plant. Its stark architecture and wavy coloring has made it a fan favorite. This plant too, however, is toxic when ingested or if the sap touches your skin.

Snake plant sap will cause rashes if it comes into contact with your skin. In addition, it will cause diarrhea and vomiting when ingested. Again these symptoms are very serious and would be best avoided by keeping snake plants out of reach or by choosing a different houseplant.
Common Toxic Garden Plants
Common Toxic Garden Plants

Daffodil

Daffodil
Daffodils are a strikingly colorful flower. This can sometimes bring them much attention not from just onlooking adults but children as well. Since kids are more drawn to colorful objects, they may have a higher chance of just grabbing the flower and eating it. Adults have also been known to accidentally grab daffodil bulbs instead of onions.

Why are these mistakes so dangerous? Daffodils contain lycorine, which can induce nausea, vomiting, and diarrhea. It also contains oxalates which can cause swelling and pain. The symptoms can be worse in animals, because if your pets eat daffodils they may experience drowsiness, low blood pressure or even liver damage.

Make sure to call poison control when these symptoms set in. The vomiting and diarrhea have been known to go away after 3 hours, but it is better to be safe than sorry. Ingesting liquids to keep hydration up can be important. If the patient is having difficulty breathing, seek medical attention immediately.

Hydrangea

Hydrangea
Hydrangeas are unique, with their soft blue and pink flowers. They are a great addition to any garden, but should not be snacked on—not that you would want to. Hydrangeas can be especially nasty because they contain compounds known as glycosides. These will release hydrogen cyanide into the bloodstream when consumed. This will block your body’s ability to uptake oxygen to the cells in your body.

The way to combat this kind of poisoning is through getting IVs from the vet or doctor. It is important to contact your medical professional immediately since the symptoms can be fatal within minutes or hours.

Rhododendrons

Rhododendrons
Rhododendron, the state flower of Washington, is also toxic. The multitudinous, pink flowers can be quite dangerous. All parts of this plant are toxic, the leaves and seeds more so than the flowers. However, even the nectar of the flower is toxic and in the Mediterranean, where rhododendrons grow in more dense quantities, the honey from bees who gather rhododendron nectar can be poisonous.

Normally kids and pets do not eat enough to experience the full poisoning effect. However, just eating two leaves is enough to be considered dangerous. The grayanotoxin glycosides within the rhododendron can cause vomiting, diarrhea and irregular heartbeats. Things can get very serious when too much rhododendron is consumed and can lead to necessary medical intervention.

Start by calling poison control first if you suspect anyone has been munching on rhododendrons. The experts there will be able to help guide you through the necessary processes to cure your loved one.

Rhubarb

Rhubarb
Yummy rhubarb has a nasty side to it. While the stems are used in many recipes, including for rhubarb strawberry pie, the leaves are toxic. They contain oxalic acid which is known to blister the mouth, cause nausea, vomiting, diarrhea and kidney stones. The leaves are known to be more toxic to pets than humans, but in either case, it is important to contact poison control immediately to figure out necessary steps to cure the patient.
Common Toxic Weeds in the Yard
Common Toxic Weeds in the Yard

Bittersweet Nightshade

Bittersweet Nightshade
Nightshade is an invasive, noxious weed that is extremely poisonous. It has been found along the East and West Coast of the U.S. It makes its home in areas with disturbed soil. This could be near your garden or areas that have recently had bushes/trees put in.

These plants are dark green with purple flowers that develop into bright red berries. The whole plant is toxic and should be avoided by pets and children alike. If ingested it can cause nausea, vomiting, and diarrhea. The colorful berries are especially enticing to young children. If you see any plants that look similar to tomato or pepper plants that you did not plant in your yard, it is best to just pull them immediately.

Call poison control immediately if you think someone has fallen victim to nightshade.

Buttercups

Buttercups
Buttercups are found throughout the United States, especially in wet areas. The shiny, yellow flowers will pop up in the springtime, accompanying their dandelion friends. However, unlike dandelions, buttercups are not edible.

Buttercups will release a compound called protoanemonin. This toxin is known to cause vomiting, diarrhea, bloody stool, hypersalivation, depression, blisters, and more. These symptoms will affect both humans and animals. The sap may also cause irritation when it comes into contact with skin. These yellow flowers are dangerous and children should be observed cautiously when around them.

Foxgloves

Foxgloves
Foxgloves are beautiful plants that build towers out of vivid purple bell-shaped blossoms. They are very pretty to look at, but they contain a compound known as digoxin. This chemical is used in certain medicines to help people with certain heart conditions. However, the medicine is made by specialists, whereas someone eating foxgloves will receive unregulated amounts of the chemical.

This toxin can make you vomit and lower your heartbeat. This often causes dizziness and faintness. It is extremely important to call poison control immediately to know what to do in the case of foxglove poisoning. Some people have confused the young leaves of foxglove with borage, making adult foragers at risk as well as kids and pets.
How to Tend to or Get Rid of Toxic Plants
How to Tend to or Get Rid of Toxic Plants
Now that you know where to start with toxic plant identification, let us discuss how to either tend to the poisonous plants you decide to keep or get rid of them that plague your yard.

How to Tend to Poisonous Plants

Many plants that are toxic when ingested are also skin irritants. The philodendron is a good example of this. When the sap comes into contact with skin, it can cause a rash to form. To help protect yourself when tending to toxic plants, it is important to wear some sort of gloves.
Tend
Latex gloves may be the best solution due to their disposability. Regular gloves could potentially keep the poisonous sap on their surface. If the gloves aren’t cleaned then you could accidentally touch the irritant or pass it to someone else.

In addition you will want to plan where to keep your deadly beauties. If you have a toxic indoor plant try to keep it up high or out of reach of children and pets. This will keep accidents few and far between. Another idea is keeping your plants in areas that are usually inaccessible to children or pets. Areas such as an office, study room, or guest bedroom could be good locations. If applicable, you could also set up a terrarium for your little plant baby, making it more difficult for curious hands or paws to access.
tend2
If you plan to have outdoor plants, location will be key. You will want to put plants in an area that will be inaccessible to children, pets and even wild animals. You will probably want to avoid planting the plants in the front of your house if kids walk by on a regular basis, just to be cautious. Having the plants behind a fence will be best, but use your discretion when choosing a spot.

How to Get Rid of Poisonous Plants

plants
The easiest but possibly most controversial way to get rid of poisonous plants is by using herbicides. This can be especially easy if you own a grass lawn and use an herbicide that targets broadleaf (non-grass) species. You can find many herbicides meant for yard use by simply searching the term online. Once you have purchased the herbicide you will want to make sure to follow the label posted on the container. If you follow the instructions precisely, then everything should run smoothly for you.

If you don’t plan on using herbicides, there are a few organic methods you can use to try to get rid of toxic plants. You can manually pull the plants out of the ground. This is probably one of the most difficult methods because there is no assurance that you will get the whole plant out this way.

You can also try pouring boiling hot water or spraying white vinegar on the target plants. This may take more time than using a synthetic herbicide, but you can feel a little better about using these products.

You can also try to use wood chips to cover a certain area where you do not want anything to grow. This will not stop all the weeds, but the few that make it through can be easily picked by hand.
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Who Is Most at Risk of Plant Poisoning?
Everyone should keep the following in mind to prevent being poisoned:
1
Do not eat any parts, nor contact with the sap of toxic or unknown plants;
2
If you need to kill it, wear long-sleeved shirts, pants and gloves with sharp tools to dig it out completely;
3
Clean the tools with rubbing alcohol or soap and water but do not do that with bare hands;
4
Clean your hands and skin once exposed to plants with soap and water;
5
Consider using barrier creams that contain bentoquatam to prevent poison oak, ivy and sumac rashes;
6
Dump it in special trash cans in sealed garbage packages;
7
Wear properly when you hiking or working in the wilderness. Long pants, long sleeves, gloves, hiking shoes, etc., that protect you from being hurt by any plants;
8
Once you or your family aren’t feeling well after eating, touching or inhaling anything from toxic plants, please call your doctor for help ASAP!
Outdoor Workers
Outdoor Workers and Recreationalists
Those who enjoy the outdoors either as a hobby or as part of their work will rarely see a plant and decide to munch on it (although the scenario is not unheard of). However, they do tend to deal with moving through and brushing aside plants. These people are more at risk of being poisoned by touching toxic plants than by ingesting them.
Outdoor Workers
Foragers
Foragers
Foraging for food and medicinal plants is a desirable skill among people who want to feel at one with the land. This hobby can be very useful and enjoyable, but if done wrong , it can lead to disastrous effects. People who forage are picking and grabbing plants with the full intention of using those plants, most of the time to ingest them.
Foragers
Children
Children
While outdoor workers are more likely to touch poison and foragers are more likely to ingest poison, children can easily do both. These bundles of joy just love to run around and explore the world. They enjoy touching things and occasionally shoving random stuff in their mouth; this is a terrible combination with toxic plants in the mix.
If you let your children run about, it is important to know what are the local toxic plants that they could accidentally get into. Try to educate the children and steer them away from where the toxic plants are located.
Children
Common Toxic Houseplants
Common Toxic Houseplants
When it comes to decorating a house, there is nothing more refreshing than adding some beautiful houseplants. Some common house plants can also be toxic.

Aloe

aloe
Aloe is famous for its sunburn-soothing properties and its gorgeous desert design. However, many people do not realize that the latex the aloe vera plant produces can be mildly toxic to pets and children.

The latex contains a chemical compound known as saponin. Which when ingested, can cause vomiting, diarrhea, and low blood sugar. This, if left unchecked, can lead to dehydration and electrolyte imbalance. The proper response is to contact poison control or a veterinarian to know what to do in your particular circumstance if either your child or pet consumes aloe.

The latex of the plant is similar to the sap of the tree. It is inside the leaf, but sticks mainly toward the edges. If aloe gel is prepared properly it should be safe for use, but be sure to apply it only topically when treating burns.

Philodendron

Philodendron
Philodendron, also known as sweetheart vine, has become a resident at many houses and even businesses. They are glossy green and the leaves elegantly split, displaying interesting designs. Behind this beauty there is a needle-like toxin called calcium oxalate crystals.

These crystals are held within the plant and only affect you, your pets, or your loved ones if the plant tissue is broken. If ingested, the crystals can cause severe swelling, difficulty breathing, stomach pain, burning and pain. If they are accidentally caught on the skin, they can cause skin irritation.

If anyone accidentally ingests philodendron and they find it difficult to breathe or their tongue starts to swell up, it is important to seek medical attention immediately to avoid suffocation. If you have very young children or pets who have a tendency to tear at plants, keep them away from any philodendrons.

Peace Lily

Peace Lily
Peace lilies produce stunningly white flowers that bring to mind peace and serenity. This is one reason they are invited into our homes and given a place to stay. However, similar to philodendrons, the peace lily contains oxalate crystals known as raphides.

The raphides, once ingested, will cause swelling and burning sensations and can also cause skin irritation. Both pets and humans can get these symptoms so it is important to keep these plants from anyone who is likely to tear or chew it. Symptoms can become dire if the raphides cause the tongue and throat to swell to a point where the person or pet is having difficulty breathing. Seek proper medical attention if this is the case.

Snake Plant

Snake Plant
The snake plant is an interesting and popular house plant. Its stark architecture and wavy coloring has made it a fan favorite. This plant too, however, is toxic when ingested or if the sap touches your skin.

Snake plant sap will cause rashes if it comes into contact with your skin. In addition, it will cause diarrhea and vomiting when ingested. Again these symptoms are very serious and would be best avoided by keeping snake plants out of reach or by choosing a different houseplant.
Common Toxic Garden Plants
Common Toxic Garden Plants

Daffodil

Daffodil
Daffodils are a strikingly colorful flower. This can sometimes bring them much attention not from just onlooking adults but children as well. Since kids are more drawn to colorful objects, they may have a higher chance of just grabbing the flower and eating it. Adults have also been known to accidentally grab daffodil bulbs instead of onions.

Why are these mistakes so dangerous? Daffodils contain lycorine, which can induce nausea, vomiting, and diarrhea. It also contains oxalates which can cause swelling and pain. The symptoms can be worse in animals, because if your pets eat daffodils they may experience drowsiness, low blood pressure or even liver damage.

Make sure to call poison control when these symptoms set in. The vomiting and diarrhea have been known to go away after 3 hours, but it is better to be safe than sorry. Ingesting liquids to keep hydration up can be important. If the patient is having difficulty breathing, seek medical attention immediately.

Hydrangea

Hydrangea
Hydrangeas are unique, with their soft blue and pink flowers. They are a great addition to any garden, but should not be snacked on—not that you would want to. Hydrangeas can be especially nasty because they contain compounds known as glycosides. These will release hydrogen cyanide into the bloodstream when consumed. This will block your body’s ability to uptake oxygen to the cells in your body.

The way to combat this kind of poisoning is through getting IVs from the vet or doctor. It is important to contact your medical professional immediately since the symptoms can be fatal within minutes or hours.

Rhododendrons

Rhododendrons
Rhododendron, the state flower of Washington, is also toxic. The multitudinous, pink flowers can be quite dangerous. All parts of this plant are toxic, the leaves and seeds more so than the flowers. However, even the nectar of the flower is toxic and in the Mediterranean, where rhododendrons grow in more dense quantities, the honey from bees who gather rhododendron nectar can be poisonous.

Normally kids and pets do not eat enough to experience the full poisoning effect. However, just eating two leaves is enough to be considered dangerous. The grayanotoxin glycosides within the rhododendron can cause vomiting, diarrhea and irregular heartbeats. Things can get very serious when too much rhododendron is consumed and can lead to necessary medical intervention.

Start by calling poison control first if you suspect anyone has been munching on rhododendrons. The experts there will be able to help guide you through the necessary processes to cure your loved one.

Rhubarb

Rhubarb
Yummy rhubarb has a nasty side to it. While the stems are used in many recipes, including for rhubarb strawberry pie, the leaves are toxic. They contain oxalic acid which is known to blister the mouth, cause nausea, vomiting, diarrhea and kidney stones. The leaves are known to be more toxic to pets than humans, but in either case, it is important to contact poison control immediately to figure out necessary steps to cure the patient.
Common Toxic Weeds in the Yard
Common Toxic Weeds in the Yard

Bittersweet Nightshade

Bittersweet Nightshade
Nightshade is an invasive, noxious weed that is extremely poisonous. It has been found along the East and West Coast of the U.S. It makes its home in areas with disturbed soil. This could be near your garden or areas that have recently had bushes/trees put in.

These plants are dark green with purple flowers that develop into bright red berries. The whole plant is toxic and should be avoided by pets and children alike. If ingested it can cause nausea, vomiting, and diarrhea. The colorful berries are especially enticing to young children. If you see any plants that look similar to tomato or pepper plants that you did not plant in your yard, it is best to just pull them immediately.

Call poison control immediately if you think someone has fallen victim to nightshade.

Buttercups

Buttercups
Buttercups are found throughout the United States, especially in wet areas. The shiny, yellow flowers will pop up in the springtime, accompanying their dandelion friends. However, unlike dandelions, buttercups are not edible.

Buttercups will release a compound called protoanemonin. This toxin is known to cause vomiting, diarrhea, bloody stool, hypersalivation, depression, blisters, and more. These symptoms will affect both humans and animals. The sap may also cause irritation when it comes into contact with skin. These yellow flowers are dangerous and children should be observed cautiously when around them.

Foxgloves

Foxgloves
Foxgloves are beautiful plants that build towers out of vivid purple bell-shaped blossoms. They are very pretty to look at, but they contain a compound known as digoxin. This chemical is used in certain medicines to help people with certain heart conditions. However, the medicine is made by specialists, whereas someone eating foxgloves will receive unregulated amounts of the chemical.

This toxin can make you vomit and lower your heartbeat. This often causes dizziness and faintness. It is extremely important to call poison control immediately to know what to do in the case of foxglove poisoning. Some people have confused the young leaves of foxglove with borage, making adult foragers at risk as well as kids and pets.
How to Tend to or Get Rid of Toxic Plants
How to Tend to or Get Rid of Toxic Plants
Now that you know where to start with toxic plant identification, let us discuss how to either tend to the poisonous plants you decide to keep or get rid of them that plague your yard.

How to Tend to Poisonous Plants

Many plants that are toxic when ingested are also skin irritants. The philodendron is a good example of this. When the sap comes into contact with skin, it can cause a rash to form. To help protect yourself when tending to toxic plants, it is important to wear some sort of gloves.
Tend
Latex gloves may be the best solution due to their disposability. Regular gloves could potentially keep the poisonous sap on their surface. If the gloves aren’t cleaned then you could accidentally touch the irritant or pass it to someone else.

In addition you will want to plan where to keep your deadly beauties. If you have a toxic indoor plant try to keep it up high or out of reach of children and pets. This will keep accidents few and far between. Another idea is keeping your plants in areas that are usually inaccessible to children or pets. Areas such as an office, study room, or guest bedroom could be good locations. If applicable, you could also set up a terrarium for your little plant baby, making it more difficult for curious hands or paws to access.
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If you plan to have outdoor plants, location will be key. You will want to put plants in an area that will be inaccessible to children, pets and even wild animals. You will probably want to avoid planting the plants in the front of your house if kids walk by on a regular basis, just to be cautious. Having the plants behind a fence will be best, but use your discretion when choosing a spot.

How to Get Rid of Poisonous Plants

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The easiest but possibly most controversial way to get rid of poisonous plants is by using herbicides. This can be especially easy if you own a grass lawn and use an herbicide that targets broadleaf (non-grass) species. You can find many herbicides meant for yard use by simply searching the term online. Once you have purchased the herbicide you will want to make sure to follow the label posted on the container. If you follow the instructions precisely, then everything should run smoothly for you.

If you don’t plan on using herbicides, there are a few organic methods you can use to try to get rid of toxic plants. You can manually pull the plants out of the ground. This is probably one of the most difficult methods because there is no assurance that you will get the whole plant out this way.

You can also try pouring boiling hot water or spraying white vinegar on the target plants. This may take more time than using a synthetic herbicide, but you can feel a little better about using these products.

You can also try to use wood chips to cover a certain area where you do not want anything to grow. This will not stop all the weeds, but the few that make it through can be easily picked by hand.
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Distribution of Onion

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Habitat of Onion

Cultivated Beds
Northern Hemisphere
South Hemisphere

Distribution Map of Onion

Onion is native to central Asia, possibly in the area that today is Turkmenistan. It is now spread quite widely across the northern hemisphere and is present in much of North America, Europe, North Africa, and Asia. It is extinct in the wild, but has been widely cultivated for 7,000 years.
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Plants Related to Onion

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Onion Watering Instructions
Onion originates from Asia but has spread widely to encompass the globe. Its native environment ordinarily experiences moderate climate and rainfall, translating to the plant's significant watering needs. Regular watering avoids dehydration in onion, and a well-drained soil ensures non-stagnant moist conditions reminiscent of its natural habitat. Too dry or overly wet conditions are not ideal; therefore balanced, regular hydration in line with its original regions' climatic conditions allows onion to thrive.
When Should I Water My Onion?
Introduction
Proper and timely watering plays a crucial role in maintaining the overall health and development of the onion. It contributes to its optimal growth, vibrant bulb production, and resistance against diseases. Therefore, understanding the appropriate signals indicating when the plant should be watered is essential.
Soil Moisture
One clear sign of when onion needs water is the moisture level of the soil. Check by sticking your finger into the soil near the base of the plant. If the top 1 to 2 inches of soil feels dry, it's time to water the plant. Moist soil indicates that the plant has enough water and doesn't require immediate watering.
Wilting Leaves
If the onion's leaves appear wilted, lackluster, or begin to lose their vibrant green color, it is a sign that the plant is under-watered. The leaves may become limp and droopy. Water the plant immediately to revive it.
Yellowing Leaves
Yellowing leaves on the onion can also indicate a lack of water. If the plant's leaves start turning yellow, especially from the bottom up, it may be in need of watering. Yellowing leaves can also be a sign of nutrient deficiencies, so it's important to assess the overall health of the plant.
Bulb Condition
A change in the condition of the onion's bulb can be an indicator of water needs. If the bulb feels soft or shriveled, it may be a sign of insufficient watering. A healthy bulb should feel firm and plump. Regular watering is vital to maintain bulb health.
Succulent Leaves
The onion has succulent leaves that can store water. However, if these leaves become thin and papery, it suggests that the plant needs water. A hydrated onion will have thick and fleshy leaves.
Temperature and Sunlight Exposure
The onion has a high water requirement during warm temperatures and high sunlight exposure periods. If the weather is hot and the sun is intense, the plant may require more frequent watering due to increased evaporation and transpiration rates.
Early Watering Risks
Watering onion too early, when the soil is still moist, could risk root rot, fungus infestation, and other root diseases due to over-watering.
Late Watering Risks
Watering onion too late, when it has been excessively dry for an extended period, could risk temporary wilting and might stunt the plant's growth. In extreme conditions, it can lead to onion bolting, where the plant produces premature flowers and seeds.
Conclusion
Understanding these signs is critical to effectively manage the watering schedule for the onion. Proper water management not only encourages its growth and bulb development but also prolongs its lifespan and maintains plant health.
How Should I Water My Onion?
Watering Requirements
Onion is a hardy plant capable of withstanding varying levels of moisture. However, consistent and adequate watering is essential for producing juicy and healthy bulbs. Overwatering is the primary concern with onion, as it can lead to bulb rot and diseases due to waterlogged soil. The watering needs also fluctuate depending on the growth phase of onion. In the initial growth phase, regular watering is necessary, while, during maturity, reduced watering will help in proper curing of the bulbs.
Watering Technique: Bottom-watering
Bottom-watering is not typically utilized for onion as this method is more suitable for potted plants and less efficient in large gardening contexts where onions are typically grown.
Watering Technique: Soaker Hoses/Irrigation Systems
An ideal method for watering onion is using soaker hoses or irrigation systems. This method ensures that water reaches directly to the roots, minimizing water loss due to evaporation. This also prevents water from sitting on the foliage which can encourage disease. Onions have shallow roots, and using these systems allows water to be delivered where it is most beneficial.
Special Tools
A moisture meter can be useful in determining onion's watering needs. The meter can help evaluate whether the soil is too dry or too wet, hence guiding the watering process effectively. A rain gauge can also be beneficial in your gardens to keep track of natural watering from rainfall.
Areas to Abstain
Onion's disease susceptibility particularly increases if the foliage stays wet for too long – hence avoid getting the leaves wet while watering. Also, avoid watering too close to the time of harvesting, as it can make the onions more likely to spoil.
Monitoring Soil Conditions
It's crucial to check the soil conditions regularly. The soil should be moist, not soggy or dry. Moisture control is key for onion - the soil must have excellent drainage conditions. Hence, adding organic matter or compost to the soil can help improve its water-holding capacity and drainage.
How Much Water Does Onion Really Need?
Introduction
Onion is a species of plant native to Asia. It is commonly known as the Onion and belongs to the scientific name Allium cepa. In its natural habitat, the Onion thrives in fertile, well-draining soils with sufficient moisture, such as fields, gardens, and farm fields. It has adapted to a moderate hydration need.
Optimal Watering Quantity
The optimal water quantity for the Onion depends on various factors such as pot size, root depth, and plant size. The pot size should be considered in relation to the root depth, as deeper roots require a thorough soaking to ensure the water reaches the bottom of the pot. For an Onion plant in a small pot, a watering volume of approximately 250-500 milliliters per watering session may be sufficient. In contrast, a larger pot may require a watering volume of 500-1000 milliliters or more. It's important to adjust the watering volume based on the size and development stage of the plant. Younger and smaller Onion plants generally require less water compared to mature and larger plants. Additionally, outdoor Onion plants may receive natural rainfall, reducing the frequency and volume of supplementary watering.
Signs of Proper Hydration
The leaves of a properly hydrated Onion plant will appear turgid and upright. The stems should be firm and the plant should exhibit healthy growth. The Onion plant requires consistent moisture, but it's important to avoid overwatering. Overwatering can be indicated by yellowing or wilting leaves, mushy stems, and a foul odor. Underwatering, on the other hand, may cause the leaves to appear wilted, pale, or dry. It's important to find a balance and ensure the soil remains consistently moist but not overly saturated.
Risks of Improper Watering
Overwatering the Onion plant can lead to root rot, which can inhibit nutrient absorption and cause the plant's health to decline. It can also attract pests and promote the growth of mold or fungus. Underwatering the plant can result in stunted growth, limited bulb development, and reduced yield. Both overwatering and underwatering can make the Onion plant more susceptible to diseases and pests.
Additional Advice
To promote optimal hydration for the Onion plant, it is recommended to use well-draining soil to prevent waterlogged conditions. Mulching the soil can also help retain moisture and regulate soil temperature. Regularly monitor the soil moisture by checking the top few inches of the soil. If it feels dry, it's time to water. However, avoid excessive watering and ensure proper drainage to prevent waterlogged conditions. It's also important to note that during the final stages of maturity, reducing watering can help promote bulb development and drying of the outer layers.
How Often Should I Water Onion?
Every 1-2 weeks
Watering Frequency
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Just like people, each plant has its own preferences and needs. Devote time to understanding your plants so you can nurture them properly. Observe your plants attentively, learning from their growth patterns, and becoming more in tune with their needs as you grow together. Keep a watchful eye on new plants and seedlings, as they are sensitive to both overwatering and underwatering. Shower them with gentle love and attention, fostering their growth and strength. Let the rhythm of your local climate guide your watering habits, adapting your schedule to the changing weather and the needs of your plants.
What Kind of Water is Best for Onion?
Optimal Water Type for onion
Onion generally prefers tap water or rainwater. Distilled water and filtered water can also be used but are not necessary as this plant is not sensitive to slight imbalances in water's mineral content.
Chlorine Sensitivity
Onion can tolerate normal levels of chlorine that are found in tap water. However, if the local tap water is highly chlorinated, it is recommended to let the water sit for a few hours before watering the plant to allow some of the chlorine to evaporate.
Fluoride Sensitivity
Onion shows moderate sensitivity to fluoride. If tap water is high in fluoride, consider using rainwater or filtered water to prevent potential damage to the plant.
Sensitivity to Other Water Contaminants
Onion can tolerate a range of minerals in the water. However, avoid using water that is heavily contaminated with heavy metals or salts as these can harm the plant.
Benefits of Water Treatments
For onion, letting tap water sit out to dechlorinate is recommended if the tap water contains high levels of chlorine. If the tap water is heavily fluoridated or contains other contaminants, consider using a water filter or opting for rainwater.
Water Temperature Preferences
Onion prefers water at room temperature. Cold water can shock the plant's roots, while hot water can damage them.
How Do Onion's Watering Needs Change with the Seasons?
How to Water onion in Spring?
Spring is usually the onset of onion's growth period when seeds are sown. It is crucial to ensure the soil for onion is thoroughly watered to encourage germination. Continue to maintain a moist soil environment as the onion sprouts and starts to grow. However, be careful not to overwater andmake the soil waterlogged as it can result in the rotting of bulbs.
How to Water onion in Summer?
Summer sees onion in its active growing phase. The plant's water requirement increases but at the same time, too much water can lead to bulb rot. Aim to strike a balance, ensuring the soil remains consistently moist, but not soaked. If your area is facing severe heat, mulching may help conserve moisture.
How to Water onion in Autumn?
During the Autumn season, onion's water requirements start to decrease as the plant nears maturity. At this point, its bulbs have formed and the foliage begins to yellow and fall off. Now, cut back on watering and allow the soil to start drying out. This assists in the bulb curing process and prepares it for harvest.
How to Water onion in Winter?
Onion does not require much watering during the Winter season, especially if the bulbs have been harvested and the area is at rest. If some onion are left in the soil, the existing moisture in the soil is often enough and additional watering may lead to bulb rot. During this season, focus should shift to soil replenishment and preparation for the next planting season.
What Expert Tips Can Enhance Onion Watering Routine?
Watering Tools
Using a watering can with a narrow spout or a hose with a nozzle attachment can help deliver water directly to the base of the plant without wetting the foliage excessively.
Watering Time
Watering onion in the early morning or late afternoon allows the water to be absorbed by the roots before the heat of the day. This reduces the risk of evaporation and fungal diseases caused by damp foliage during cooler nights.
Soil Moisture Assessment
In addition to checking the surface soil moisture, it's important to perform a finger test by inserting it into the soil to a depth of 2-3 inches. If it feels moderately dry, it's time to water. Avoid watering if the soil is still moist.
Avoid Over-Watering
Over-watering onion can lead to root rot. The soil should be allowed to dry out between waterings to prevent excess moist conditions. Aim for the top few inches of the soil to be dry before watering again.
Signs of Thirst
When onion starts to wilt or the leaves turn yellow, it is a sign that it needs water. However, be cautious not to confuse wilting caused by other factors such as diseases or pests.
Signs of Over-Watering
Yellowing and drooping leaves that are mushy or slimy to the touch are indicators of over-watering. The soil may also have a foul smell. Adjust watering to prevent further damage.
Watering in Special Conditions
During a heatwave, onion may require more frequent watering to compensate for increased evaporation. In extended periods of rain, reduce watering frequency to prevent waterlogged soil. If the plant is stressed, provide water in smaller doses multiple times a day rather than a single heavy watering.
Considering Hydroponics? How to Manage a Water-Grown Onion?
Overview of Hydroponics
Onion is a plant that can be successfully grown using hydroponics, which is a method of cultivating plants in a water-based nutrient solution, without the use of soil. Hydroponics offers several advantages for growing onion, including faster growth rates, higher yields, and better control over nutrient intake.
Best Suited Hydroponic System
The nutrient film technique (NFT) is a suitable hydroponic system for growing onion. In this system, a thin film of nutrient solution continuously flows over the roots, providing them with a constant supply of nutrients and oxygen. The shallow roots of onion can easily access the flowing film, ensuring optimal nutrient absorption.
Nutrient Solution Requirements
For optimal growth, onion requires a nutrient solution with a balanced formulation. The recommended nutrient concentration is generally around 1000-1500 ppm (parts per million) for onion. The pH level should be maintained between 5.5 and 6.5. It is essential to regularly monitor and adjust the nutrient solution to prevent nutrient deficiencies or excesses.
Challenges and Common Issues
When growing onion hydroponically, root rot can be a common issue due to excessive moisture. To prevent this, ensure proper drainage and oxygenation of the root zone. Additionally, maintaining a balanced nutrient solution is crucial to avoid nutrient imbalances. Light requirements for onion should also be taken into consideration, as it needs at least 14-16 hours of light per day for optimum growth.
Monitoring Plant Health
Regularly monitor onion for signs of stress, such as yellowing leaves, stunted growth, or wilting. These symptoms may indicate nutrient deficiencies, pH imbalances, or inadequate lighting. Adjust the nutrient solution, pH levels, or lighting accordingly to address any issues.
Adjusting the Hydroponic Environment
To meet onion's specific needs throughout its growth stages, adjust the hydroponic environment accordingly. During the vegetative stage, provide a higher concentration of nitrogen in the nutrient solution. As onion transitions to the bulb development stage, increase the phosphorus and potassium levels to support bulb growth. Adjust the lighting duration based on the growth stage and provide adequate spacing between plants to ensure proper airflow and light penetration.
Nutrient Solution
Onion prefers a well-balanced nutrient solution with a pH level maintained between 5.5 and 6.5. The recommended nutrient concentration is around 1000-1500 ppm for optimal growth.
Hydroponic System
The nutrient film technique (NFT) is the best-suited hydroponic system for growing onion due to its ability to provide a constant flow of nutrient solution over the shallow roots of the plant.
Root Rot Prevention
To prevent root rot, ensure proper drainage and oxygenation in the root zone. Avoid over-watering and provide sufficient airflow to the roots.
Lighting Requirements
Onion requires at least 14-16 hours of light per day for optimal growth. Provide a combination of blue and red spectrum lights to support both vegetative and bulb development stages.
Monitoring Signs of Stress
Regularly check onion for signs of stress, such as yellowing leaves, stunted growth, or wilting. Adjust the nutrient solution, pH levels, or lighting duration accordingly to address any issues.
Adjusting Hydroponic Environment
During the vegetative stage, increase the nitrogen levels in the nutrient solution. As onion enters the bulb development stage, increase the phosphorus and potassium levels. Adjust the lighting duration and spacing between plants based on their growth stage.
pH Levels
Maintain the pH levels of the nutrient solution between 5.5 and 6.5 for onion. Regularly monitor and adjust the pH levels to prevent nutrient imbalances.
Nutrient Concentrations
The recommended nutrient concentration for onion is around 1000-1500 ppm to ensure optimal growth and development.
Important Symptoms
Overwatering Symptoms of Onion
Onion is more susceptible to developing disease symptoms when overwatered because it prefers a soil environment with moderate humidity. Symptoms of overwatering include yellowing leaves, brown or black spots, root rot...
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Yellowing leaves
When plants receive too much water, the roots become oxygen deprived and the bottom leaves of the plant gradually turn yellow.
Brown or black spots
Excessive watering can damage the plant's root system, making it vulnerable to fungal infections. The plant may develop dark brown to black spots that spread upwards from the lower leaves which are usually the first to be affected.
Root rot
Excess water in the soil can lead to the growth of harmful fungi and bacteria, causing the roots to rot and eventually kill the plant.
Wilting
Overwatering can cause plants to wilt, despite the excess water, as the roots struggle to take up nutrients and oxygen due to waterlogged soil.
Increased susceptibility diseases
Overwatering plants may become more susceptible and diseases as their overall health declines, weakening their natural defenses.
Solutions
1. Adjust watering frequency based on seasons and soil dryness. Wait for soil to dry before watering.2. Increase soil aeration by loosening surface and gently stirring with a wooden stick or chopstick.3. Optimize environment with good ventilation and warmth to enhance water evaporation and prevent overwatering.
Underwatering Symptoms of Onion
Onion is more susceptible to plant health issues when lacking watering, as it can only tolerate short periods of drought. Symptoms of dehydration include wilting, leaf curling, yellowing leaves...
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Leaf curling
Leaves may curl inward or downward as they attempt to conserve water and minimize water loss through transpiration.
Loss of turgor pressure
When plants are underwatered, their cells lose water, causing a loss of turgor pressure. This can result in the plant appearing limp or deflated.
Root damage
Prolonged underwatering can cause root damage, making it difficult for the plant to absorb water even when it is available.
Dying plant
If underwatering continues for an extended period, the plant may ultimately die as a result of severe water stress and an inability to carry out essential functions.
Solutions
1. Thoroughly saturate soil with slow ring watering to ensure uniform and sufficient moisture for plants. 2. Increase air humidity with water trays or misting to slow leaf water evaporation. 3. Watering according to the recommended frequency.Adjust watering frequency based on seasons and soil dryness.
Watering Troubleshooting for Onion
Why are the leaves of my onion turning yellow?
Yellow leaves could be a sign of overwatering. Onions need a balance of moisture; both too much or too less can harm them. Check your watering routine to ensure the plant isn't sitting in water. If the soil feels too wet, reduce watering and ensure that your plant has proper drainage. It's better to let the soil dry out a bit between waterings.
My onion are wilting despite regular watering. What could be the issue?
Wilting despite regular watering is a sign of waterlogged soil. Onions don't like to be excessively wet and need well-draining soil. Too much water can suffocate the root system leading to wilted plants. If your plant is wilting, check the drainage situation. You may need to improve the soil structure with the addition of organic matter or adjust your watering schedule.
Why is my onion showing signs of leaf tip burn?
Leaf tip burn in onions can be caused by an inconsistent watering schedule. This is a stress response of the plant when it is not receiving water regularly, or the soil is not retaining enough moisture. Ensure to provide steady moisture during the growing season, especially in dry weather. Mulching around the onion bed can help retain soil moisture.
Is it possible to under-water onion?
Yes, onions can be under-watered. Onions need an inch of water per week either through rain or manual watering. If under-watered, the onions' growth will be stunted, and they won't form proper bulbs. It's essential to check the soil moisture regularly and water the onions if the top inch of soil feels dry.
My onion is dying post-transplanting. Could this be because of water stress?
Yes, it could be due to transplant shock caused by water stress. Onions are quite sensitive to changes and might require frequent watering right after being transplanted. Yet, be careful not to overwater and drown them. Regular but temperate watering during the establishment process will help your onions adapt better to the new environment.
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Lighting
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Requirements
Full sun
Ideal
Above 6 hours sunlight
Partial sun
Tolerance
About 3-6 hours sunlight
Watch how sunlight gracefully moves through your garden, and choose spots that provide the perfect balance of light and shade for your plants, ensuring their happiness.
Essentials
Onion thrives under an abundance of solar radiation, proving resilient to somewhat filtered light but showing optimal growth in unobstructed sunlight. Its heritage as a plant accustomed to open, non-shaded habitats influences this. Overexposure might stress the plant, while too little sunlight could impede growth.
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Artificial lighting
Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
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Indoor plants require adequate lighting for optimal growth. When natural sunlight is insufficient, particularly in winter or in less sunny spaces, artificial lights offer a vital solution, promoting faster, healthier growth.
1. Choose the right type of artificial light: LED lights are a popular choice for indoor plant lighting because they can be customized to provide the specific wavelengths of light that your plants need.
Full sun plants need 30-50W/sq ft of artificial light, partial sun plants need 20-30W/sq ft, and full shade plants need 10-20W/sq ft.
2. Determine the appropriate distance: Place the light source 12-36 inches above the plant to mimic natural sunlight.
3. Determine the duration: Mimic the length of natural daylight hours for your plant species. most plants need 8-12 hours of light per day.
Important Symptoms
Symptoms of Insufficient Light in %s
Onion thrives in full sunlight and is commonly cultivated outdoors. When grown indoors with limited light, it may exhibit subtle symptoms of light deficiency that can easily go unnoticed.
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Small leaves
New leaves may grow smaller in size compared to the previous ones once they have matured.
Leggy or sparse growth
The spaces between leaves or stems of your onion may become longer, resulting in a thin and stretched-out appearance. This can make the plant look sparse and weak, and it may easily break or lean due to its own weight.
Faster leaf drop
When plants are exposed to low light conditions, they tend to shed older leaves early to conserve resources. Within a limited time, these resources can be utilized to grow new leaves until the plant's energy reserves are depleted.
Slower or no new growth
Onion enters a survival mode when light conditions are poor, which leads to a halt in leaf production. As a result, the plant's growth becomes delayed or stops altogether.
Lighter-colored new leaves
Insufficient sunlight can cause leaves to develop irregular color patterns or appear pale. This indicates a lack of chlorophyll and essential nutrients.
Solutions
1. To ensure optimal growth, gradually move plants to a sunnier location each week, until they receive at least 6 hours of direct sunlight daily. Use a south-facing window and keep curtains open during the day for maximum sunlight exposure and nutrient accumulation.2. To provide additional light for your plant, consider using artificial light if it's large or not easily movable. Keep a desk or ceiling lamp on for at least 8 hours daily, or invest in professional plant grow lights for ample light.
Symptoms of Excessive light in %s
Onion thrives in full sun exposure and can tolerate intense sunlight. With their remarkable resilience, symptoms of sunburn may not be easily visible, as they rarely suffer from it.
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Chlorosis
Chlorosis is a condition where the plant's leaves lose their green color and turn yellow. This is due to the breakdown of chlorophyll from excessive sunlight, which negatively affects the plant's ability to photosynthesize.
Sunscald
Sunscald occurs when the plant's leaves or stems are damaged by intense sunlight exposure. It appears as pale, bleached, or necrotic areas on the plant tissue and can reduce the plant's overall health.
Leaf Curling
Leaf curling is a symptom where leaves curl or twist under extreme sunlight conditions. This is a defense mechanism used by the plant to reduce its surface area exposed to sunlight, minimizing water loss and damage.
Wilting
Wilting occurs when a plant loses turgor pressure and its leaves and stems begin to droop. Overexposure to sunlight can cause wilting by increasing the plant's water loss through transpiration, making it difficult for the plant to maintain adequate hydration.
Leaf Scorching
Leaf scorching is a symptom characterized by the appearance of brown, dry, and crispy edges or patches on leaves due to excessive sunlight. This can lead to a reduction in photosynthetic capacity and overall plant health.
Solutions
1. Move your plant to the optimal position where it can receive abundant sunlight but also have some shade. An east-facing window is an ideal choice as the morning sunlight is gentler. This way, your plant can enjoy ample sunlight while reducing the risk of sunburn.2. It is recommended to trim off any completely dehydrated or withered parts of the plant.
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Temperature
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Requirements
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Tolerable
Unsuitable
Just like people, each plant has its own preferences. Learn about your plants' temperature needs and create a comforting environment for them to flourish. As you care for your plants, your bond with them will deepen. Trust your intuition as you learn about their temperature needs, celebrating the journey you share. Lovingly monitor the temperature around your plants and adjust their environment as needed. A thermometer can be your ally in this heartfelt endeavor. Be patient and gentle with yourself as you explore your plants' temperature needs. Cherish your successes, learn from challenges, and nurture your garden with love, creating a haven that reflects the warmth of your care.
Essentials
Onion is native to environments with moderate temperatures. Intolerance for cold habitats makes it thrive in regions averaging 68 to 100 °F (20 to 38 ℃). For optimal health, maintain temperatures within this range all year long, adjusting accordingly each season.
Regional wintering strategies
Onion prefers relatively warm temperatures, so maintaining temperatures above {Suitable_growth_temperature_min} during winter cultivation is beneficial for plant growth. The minimum temperature should be kept above freezing point to prevent the plant from freezing damage. When the outdoor temperature approaches -5°C (25°F) during winter, it is advisable to bring Onion indoors or provide protection by setting up a temporary greenhouse or using materials such as plastic film or fabric to wrap the plant.
Important Symptoms
Symptoms of Low Temperature in Onion
Onion has moderate tolerance to low temperatures and thrives best when the temperature is between {Suitable_growth_temperature_min} and {Suitable_growth_temperature_max}. During winter, it should be kept above {Tolerable_growing_temperature_min}. When the temperature falls below {Limit_growth_temperature}, the leaves may darken in color. In severe cases, water-soaked necrosis, wilting, and drooping may occur, and the color of the leaves gradually turns brown.
Solutions
Trim away the frost-damaged parts. Immediately move indoors to a warm environment or set up a makeshift greenhouse for cold protection. When placing the plant indoors, choose a location near a south-facing window to ensure ample sunlight. If there is insufficient light, you can use supplemental lighting.
Symptoms of High Temperature in Onion
During summer, Onion should be kept below {Suitable_growth_temperature_max}. When the temperature exceeds {Tolerable_growing_temperature_max}, the plant's growth slows down, the color of its leaves becomes lighter, and it becomes more susceptible to sunburn.
Solutions
Trim away the sunburned and dried-up parts. Move the plant to a location that provides shade from the afternoon sun. Water the plant in the morning and evening to keep the soil moist.
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Toxic
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The Toxicity of Onion
Toxic to Pets
Pets
Is Onion toxic to dog?
All parts of the onion plant are at least mildly toxic to dogs, but it is the bulb - the part most commonly prepared and eaten by humans - that typically causes the strongest reactions. Dogs often accidentally eat onions that are cooked in dishes they are given as table scraps. Vomiting, diarrhea, excessive drooling, and general gastrointestinal distress are all possible results. While these symptoms all may cause great discomfort to your pup, onion ingestion, thankfully, almost never causes severe or fatal reactions.
Is Onion toxic to cat?
All onion species are toxic to cats, with the onion (Allium cepa) being the most toxic of them all. Every part of the plant, both above and below ground, is poisonous to felines. A cat that has eaten some will start to show signs of illness - which may include vomiting, excessive drooling, diarrhea, weakness, pale gums and/or abdominal pain - within 6-12 hours. Often, cats require veterinary treatment to fully recover. Even cooked onions are hazardous!
How to identify Onion
* The judgment on toxicity and danger is for reference only. We DO NOT GUARANTEE any accuracy of such judgment. Therefore, you SHALL NOT rely on such judgment. It is IMPORTANT TO SEEK PROFESSIONAL ADVICE in advance when necessary.
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