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Wild radish
Wild radish
Wild radish
Wild radish
Wild radish
Wild radish
Add to My Garden
Wild radish
Raphanus raphanistrum
Wild radish is a plant that is entirely edible, with a flavor that is described as peppery and earthy. The leaves and greens can be consumed boiled or in salads, while the roots can be cooked and consumed after the tough outer peel is removed.
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Spring
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care guide

Care Guide for Wild radish

Average water needs, watering when the top 3 cm of soil has dried out.
Clay, Acidic, Neutral, Alkaline
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Full sun, Partial sun
Hardiness Zones
Hardiness Zones
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2 to 11
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Spring
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Wild radish
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Hardiness Zones
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2 to 11
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Spring
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Wild radish
Sunlight
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Hardiness Zones
Hardiness Zones
2 to 11
Planting Time
Planting Time
Spring
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Wild radish
Sunlight
Sunlight
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Hardiness Zones
Hardiness Zones
2 to 11
Planting Time
Planting Time
Spring
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Questions About Wild radish

Watering Watering Watering
Pruning Pruning Pruning
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What is the best way to water my Wild radish?
To water Wild radish, you can use a garden hose with a spray nozzle, a watering can, or just about any other common watering tool. Generally, Wild radish is not too picky about how they receive their water, as they can live off of rainwater, tap water, or filtered water. Often, you should try not to water this plant from overhead, as doing so can damage the leaves and flowers and may lead to disease as well. At times, the best method for watering this plant is to set up a drip irrigation system. These systems work well for Wild radish as they apply water evenly and directly to the soil. For one Wild radish that grows in a container, you can use a similar watering approach while changing the tools you use. To water a container-grown Wild radish, use a cup, watering can, or your tap to apply water directly to the soil.
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What should I do if I water my Wild radish too much or too little?
The remedy for underwatering Wild radish is somewhat obvious. When you notice that your plant lacks moisture, simply begin watering it on a more regular basis. The issue of overwatering can be a much more dire situation, especially if you fail to notice it early. When your Wild radish is overwatered, it may contract diseases that lead to its decline and death. The best way to prevent this outcome is to choose a proper growing location, one that receives plenty of sunlight to help dry the soil and has good enough drainage to allow excess water to drain rather than pooling and causing waterlogged soils. If you overwater your Wild radish that lives in a pot, you may need to consider changing it to a new pot. Your previous container may not have contained soil with good drainage or may not have had sufficient drainage holes. As you repot your overwatered Wild radish, make sure to add loose soils and to use a pot that drains efficiently.
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How often should I water my Wild radish?
Wild radish needs water regularly throughout the growing season. Beginning in spring, you should plan to water this plant about once per week. As the season presses on and grows warmer, you may need to increase your watering rate to about two to three times per week. Exceeding at this rate can be detrimental to your Wild radish. With that said, you should also ensure that the soil in which your Wild radish grows remains relatively moist but not wet, regardless of how often you must water to make that the case. Watering Wild radish that lives in a pot is a bit different. Generally, you'll need to increase your watering frequency, as the soil in a pot can heat up and dry out a bit faster than ground soil. As such, you should plan to water a container-grown Wild radish a few times per week in most cases, versus just once per week for an in-ground plant.
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How much water does my Wild radish need?
There are a few different ways you can go about determining how much water to give to your Wild radish. Some gardeners choose to pick their water volume based on feeling the soil for moisture. That method suggests that you should water until you feel that the first six inches of soil have become moist. Alternatively, you can use a set measurement to determine how much to water your Wild radish. Typically, you should give your Wild radish about two gallons of water per week, depending on how hot it is and how quickly the soil becomes dry. However, following strict guidelines like that can lead to overwatering if your plant requires less than two gallons per week for whatever reason. When growing Wild radish in a container, you will need to use a different method to determine how much water to supply. Typically, you should give enough water to moisten all of the layers of soil that have become dry. To test if that is the case, you can simply stick your finger in the soil to feel for moisture. You can also water the soil until you notice a slight trickle of excess water exiting the drainage holes of your pot.
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How can I tell if i'm watering my Wild radish enough?
It can be somewhat difficult to avoid overwatering your Wild radish. On the one hand, these plants have relatively deep roots that require you to moisten the soil weekly. On the other hand, Wild radish are plants that are incredibly susceptible to root rot. Along with root rot, your Wild radish may also experience browning as a result of overwatering. Underwatering is far less likely for your Wild radish as these plants can survive for a while in the absence of supplemental watering. However, if you go too long without giving this plant water, it will likely begin to wilt. You may also notice dry leaves.
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How should I water my Wild radish through the seasons?
You can expect your Wild radish’s water needs to increase as the season moves on. During spring, you should water about once per week. Then, as the summer heat arrives, you will likely need to give a bit more water to your Wild radish, at times increasing to about three times per week. This is especially true of Wild radish that grow in containers, as the soil in a container is far more likely to dry out faster than ground soil when the weather is warm. In autumn, while your Wild radish is still in bloom, it may need a bit less water as the temperature has likely declined, and the sun is no longer as strong as it was in summer.
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How should I water my Wild radish at different growth stages?
Wild radish will move through several different growth stages throughout the year, some of which may require more water than others. For example, you will probably start your Wild radish as a seed. While the seed germinates, you should plant to give more water than your Wild radish will need later in life, watering often enough to maintain consistent soil moisture. After a few weeks, your Wild radish will grow above the soil and may need slightly less water than at the seedling phase. Then, once this plant is mature, you can begin to use the regular watering frequency of about once per week. As flower development takes place, you may need to give slightly more water to aid the process.
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What's the difference between watering Wild radish indoors and outdoors?
There are several reasons why most Wild radish grow outdoors rather than indoors. The first is that these plants typically grow to tall. The second reason is that Wild radish needs more daily sunlight than most indoor growing locations can provide. If you are able to provide a suitable indoor growing location, you may find that you need to give your Wild radish water a bit more often than you would in an outdoor growing location. Part of the reason for this is that indoor growing locations tend to be a lot drier than outdoor ones due to HVAC units. The other reason for this is that soil in containers can dry out relatively quickly as well compared to soil in the ground.
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pests

Common Pests & Diseases

Common issues for Wild radish based on 10 million real cases
Leaf rot
Leaf rot Leaf rot
Leaf rot
This pathogen can cause the leaves to rot.
Solutions: Bacterial infections need to be treated quickly to prevent the spread to neighboring, healthy plants, potentially wiping out large sections of your indoor or outdoor garden. In mild cases: Use sterilized (10% bleach solution) pruning shears or scissors to remove any infected plant parts, making sure to dispose of them off site. Use a copper-based bactericide to treat the unaffected foliage, as well as the soil, and neighboring plants. Follow the manufacturer’s rate and timing directions found on the product label. In severe cases, where more than half the leaves are affected: Remove all of the infected plants from the garden, disposing of them off site. Treat the soil and neighboring plants using a copper-based bactericide. Follow the manufacturer’s rate and timing directions found on the product label.
Root deformity
Root deformity Root deformity
Root deformity
Root deformities can have a variety of causes
Solutions: There are a few key steps to take if root deformity is suspected: Prevent the spread of fungal diseases - if a fungal pathogen is to blame for the root deformity, there’s not much to do once it sets into the soil. Prevent it from spreading by applying a fungicide or adjusting the soil pH based on what is needed for the specific type of plant. Do not re-use this soil for future plantings. Harvest selectively - for root vegetables like carrots or parsnips, the tubers may still be usable. Cull some of the crop or cut away affected areas, but the rest should still be safe to eat.
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.
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Leaf rot
plant poor
Leaf rot
This pathogen can cause the leaves to rot.
Overview
Overview
Leaf rot is very common among both house plants and garden plants. It affects foliage and occurs mainly when the leaves become wet due to rain or misting by the gardener. The cause is fungal disease and this is facilitated by the fungal spores adhering to wet leaves then penetrating the leaf and expanding rapidly. Damp conditions and poor air circulation will increase chances of infection taking place. Another factor are leaves that are damaged or have been penetrated by sap sucking insects that facilitate plant penetration.
Symptom Analysis
Symptom Analysis
  1. Spores are able to cling to a damp leaf and penetrate, often through an existing wound.
  2. A small dark brown mark appears which expands rapidly as sporulation starts to take place.
  3. Quite quickly these bull's eye like circles can link together and the whole leaf turns dark and loses texture.
  4. Leaf drop occurs.
Disease Cause
Disease Cause
These symptoms are caused by a bacterial infection invading the plant. Bacteria from many sources in the environment (air, water, soil, diseased plants) enter a plant through wounds, or in some cases the stomata when they are open. Once inside the leaf tissue, the bacteria feed and reproduce quickly, breaking down healthy leaves.
Bacterial infections threaten most plant species, and are more prominent in wet weather that more easily transfers the bacteria from plant to plant, or from soil to plant.
Solutions
Solutions
Bacterial infections need to be treated quickly to prevent the spread to neighboring, healthy plants, potentially wiping out large sections of your indoor or outdoor garden.
In mild cases: Use sterilized (10% bleach solution) pruning shears or scissors to remove any infected plant parts, making sure to dispose of them off site. Use a copper-based bactericide to treat the unaffected foliage, as well as the soil, and neighboring plants. Follow the manufacturer’s rate and timing directions found on the product label.
In severe cases, where more than half the leaves are affected: Remove all of the infected plants from the garden, disposing of them off site. Treat the soil and neighboring plants using a copper-based bactericide. Follow the manufacturer’s rate and timing directions found on the product label.
Prevention
Prevention
  1. Clean up garden debris at the end of the season, especially if it contains any diseased plant tissue. Diseases can overwinter from season to season and infect new plants.
  2. Avoid overhead watering to prevent transferring pathogens from one plant to another, and to keep foliage dry.
  3. Mulch around the base of plants to prevent soil-borne bacteria from splashing up onto uninfected plants.
  4. Sterilize cutting tools using a 10% bleach solution when gardening and moving from one plant to another.
  5. Do not work in your garden when it is wet.
  6. Rotate crops to prevent the buildup of bacteria in one site due to continuous cropping.
  7. Use a copper or streptomycin-containing bactericide in early spring to prevent infection. Read label directions carefully as they are not suitable for all plants.
  8. Ensure plants are well spaced and thin leaves on densely leaved plants so that air circulation is maximised.
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Root deformity
plant poor
Root deformity
Root deformities can have a variety of causes
Overview
Overview
Although root deformity is a problem that can occur with just about any type of plant, it tends to be more noticeable in root crops such as carrots, parsnips, or potatoes. In any plant, it is important to address root deformity in its early stages so that they are able to grow to their fullest potential.
Symptom Analysis
Symptom Analysis
There are countless symptoms of root deformity and associated root problems in plants. In fact, these symptoms often co-occur with dozens of others, making it hard to tell which disease, pest, or environmental condition is responsible for a given plant’s suffering and failure to thrive.
Some of the most common symptoms you will see in plants with root deformity problems are:
  • Roots that are misshapen, rotten, or stunted
  • Roots that become brown and mushy as areas begin to die back
  • Stunted growth
  • Wilted or yellowing leaves
  • Premature leaf drop
  • Delayed blooming
Root deformity is not a disease that occurs on its own but is instead a symptom of many other common plant problems. Because of that, it is exceedingly important to examine all the issues to figure out what is going wrong.
Disease Cause
Disease Cause
There are several reasons why plants may develop malformed roots.
One of the most common is related to the environment. Environmental conditions related to moisture, soil structure, and nutrient load can commonly cause issues with root formation.
Not all soils are conducive to creating healthy roots. Roots need room to grow, spread, and breathe. When plants are grown in soil that is rocky or composed of heavy clay, it does not give them the opportunity to do so. Roots that do most of the “storage work” for plants, such as those of beets, kohlrabi, potatoes, carrots, turnips, and so on, are most likely to suffer from this cause.
There are various plant diseases that can cause plant roots to become malformed. These are generally plant- and species-specific but can include diseases such as root rot. Clubroot is another disease that typically affects plants in the mustard family, such as cabbage, broccoli, and Brussels sprouts.
There are even pests, such as root-knot nematodes, that can cause root damage, malformation, and death in a long list of plant species.
Solutions
Solutions
There are a few key steps to take if root deformity is suspected:
  • Prevent the spread of fungal diseases - if a fungal pathogen is to blame for the root deformity, there’s not much to do once it sets into the soil. Prevent it from spreading by applying a fungicide or adjusting the soil pH based on what is needed for the specific type of plant. Do not re-use this soil for future plantings.
  • Harvest selectively - for root vegetables like carrots or parsnips, the tubers may still be usable. Cull some of the crop or cut away affected areas, but the rest should still be safe to eat.
Prevention
Prevention
There are several steps for preventing root deformity from impacting your plants;
  • Address spacing issues - one of the most common reasons for root deformity is plants that are growing too close together. Space plants according to the recommendations listed on the seed packet or in the planting guidelines.
  • Thin plants - some plants benefit from thinning after they have germinated. Consult the planting guidelines for each species, but know that removing all but the healthiest seedlings can provide them with the space they need to grow.
  • Improve soil quality - rocky and compacted soils can cause root deformity. Aerate the soil prior to planting and remove as many rocky or clay-dominated areas as possible.
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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.
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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Weed Control

Weeds
Native to Eurasia, wild radish has spread to parts of Africa, the Americas, and Oceania. It is defined as an invasive species or agricultural weed in multiple states in the United States. It has been planted for edible purposes and to attract pollinators. However, wild radish can act as an alternative host for a variety of agricultural pests and is a weed in agricultural contexts. It spreads rapidly via prolific seed production and establishes readily in disturbed habitats. Integration of herbicide and other methods such as plowing or soil polarization is typically required for effective control.
How to Control it
Wild radish can be very difficult to manage once it establishes, so it is advised to remove it before flowering and fruiting in order to prevent seed production, and consequently the spread of this weedy plant. Wild radish plants are easiest to remove when they are young, so regular garden inspection and weed removal are necessary measures for their control. Mulching: Covering the soil with sawdust, straws, or black mulches during the seed stage can effectively inhibit seed germination and growth of the seedling. Generally, this method is used in winter or spring to inhibit the germination of seeds in the soil. If the weeds have already flowered and bore fruit, this method can be used to prevent the seeds to reach the soil, reducing the level of infestation significantly in the next growing season. Pulling out: Pull the plants from the soil using adequate tools before the plants bear fruit. If the soil is dry, add water to make it softer and dig out the plant more efficiently. Deep tillage can be performed to remove the remaining roots. This method has shown to be especially effective for weeds that are in seedling stage or low growing size. Pruning: Pruning wild radish plants before they bear fruit can effectively prevent them from reoccurring, especially if they are annuals. If biennials are in question, pruning should be performed the following year too. Plowing: Before planting crops or other plants, plow the soil (at least 20 cm deep), collect the plant roots, leave them exposed to the sun or bury them deeply. Discarded plant material can be added to the plant mix for making organic fertilizer and compost. Chemical control: There are many available herbicides for wild radish control. Make sure to read and follow the application instructions carefully, and spray on a windless day to avoid negative effects on non-target species
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Distribution Map

Habitat

Fields, pastures, sandy non-calcareous soils
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Cultivated
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Potentially invasive
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More Info

Flower Color
Flower Color
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Bloom Time
Bloom Time
Summer, Fall
Leaf Color
Leaf Color
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Name story

Wild radish
Raphanus raphanistrum is thought to be the ancestor of Raphanus sativus and with this association, it is perhaps more deserving of the common name of wild radish.
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Wild radish
Wild radish
Wild radish
Wild radish
Wild radish
Wild radish
Add to My Garden
Wild radish
Raphanus raphanistrum
Wild radish is a plant that is entirely edible, with a flavor that is described as peppery and earthy. The leaves and greens can be consumed boiled or in salads, while the roots can be cooked and consumed after the tough outer peel is removed.
Planting Time
Spring
Planting Time
Weeds
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Care Guide for Wild radish

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Questions About Wild radish

Watering Watering Watering
Pruning Pruning Pruning
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Temperature Temperature Temperature
Fertilizing Fertilizing Fertilizing
What is the best way to water my Wild radish?
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What should I do if I water my Wild radish too much or too little?
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How often should I water my Wild radish?
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How much water does my Wild radish need?
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Common Pests & Diseases

Common issues for Wild radish based on 10 million real cases
Leaf rot
Leaf rot  Leaf rot  Leaf rot
This pathogen can cause the leaves to rot.
Solutions: Bacterial infections need to be treated quickly to prevent the spread to neighboring, healthy plants, potentially wiping out large sections of your indoor or outdoor garden. In mild cases: Use sterilized (10% bleach solution) pruning shears or scissors to remove any infected plant parts, making sure to dispose of them off site. Use a copper-based bactericide to treat the unaffected foliage, as well as the soil, and neighboring plants. Follow the manufacturer’s rate and timing directions found on the product label. In severe cases, where more than half the leaves are affected: Remove all of the infected plants from the garden, disposing of them off site. Treat the soil and neighboring plants using a copper-based bactericide. Follow the manufacturer’s rate and timing directions found on the product label.
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Root deformity
Root deformity  Root deformity  Root deformity
Root deformities can have a variety of causes
Solutions: There are a few key steps to take if root deformity is suspected: Prevent the spread of fungal diseases - if a fungal pathogen is to blame for the root deformity, there’s not much to do once it sets into the soil. Prevent it from spreading by applying a fungicide or adjusting the soil pH based on what is needed for the specific type of plant. Do not re-use this soil for future plantings. Harvest selectively - for root vegetables like carrots or parsnips, the tubers may still be usable. Cull some of the crop or cut away affected areas, but the rest should still be safe to eat.
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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.
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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.
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Leaf rot
plant poor
Leaf rot
This pathogen can cause the leaves to rot.
Overview
Overview
Leaf rot is very common among both house plants and garden plants. It affects foliage and occurs mainly when the leaves become wet due to rain or misting by the gardener. The cause is fungal disease and this is facilitated by the fungal spores adhering to wet leaves then penetrating the leaf and expanding rapidly. Damp conditions and poor air circulation will increase chances of infection taking place. Another factor are leaves that are damaged or have been penetrated by sap sucking insects that facilitate plant penetration.
Symptom Analysis
Symptom Analysis
  1. Spores are able to cling to a damp leaf and penetrate, often through an existing wound.
  2. A small dark brown mark appears which expands rapidly as sporulation starts to take place.
  3. Quite quickly these bull's eye like circles can link together and the whole leaf turns dark and loses texture.
  4. Leaf drop occurs.
Disease Cause
Disease Cause
These symptoms are caused by a bacterial infection invading the plant. Bacteria from many sources in the environment (air, water, soil, diseased plants) enter a plant through wounds, or in some cases the stomata when they are open. Once inside the leaf tissue, the bacteria feed and reproduce quickly, breaking down healthy leaves.
Bacterial infections threaten most plant species, and are more prominent in wet weather that more easily transfers the bacteria from plant to plant, or from soil to plant.
Solutions
Solutions
Bacterial infections need to be treated quickly to prevent the spread to neighboring, healthy plants, potentially wiping out large sections of your indoor or outdoor garden.
In mild cases: Use sterilized (10% bleach solution) pruning shears or scissors to remove any infected plant parts, making sure to dispose of them off site. Use a copper-based bactericide to treat the unaffected foliage, as well as the soil, and neighboring plants. Follow the manufacturer’s rate and timing directions found on the product label.
In severe cases, where more than half the leaves are affected: Remove all of the infected plants from the garden, disposing of them off site. Treat the soil and neighboring plants using a copper-based bactericide. Follow the manufacturer’s rate and timing directions found on the product label.
Prevention
Prevention
  1. Clean up garden debris at the end of the season, especially if it contains any diseased plant tissue. Diseases can overwinter from season to season and infect new plants.
  2. Avoid overhead watering to prevent transferring pathogens from one plant to another, and to keep foliage dry.
  3. Mulch around the base of plants to prevent soil-borne bacteria from splashing up onto uninfected plants.
  4. Sterilize cutting tools using a 10% bleach solution when gardening and moving from one plant to another.
  5. Do not work in your garden when it is wet.
  6. Rotate crops to prevent the buildup of bacteria in one site due to continuous cropping.
  7. Use a copper or streptomycin-containing bactericide in early spring to prevent infection. Read label directions carefully as they are not suitable for all plants.
  8. Ensure plants are well spaced and thin leaves on densely leaved plants so that air circulation is maximised.
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Root deformity
plant poor
Root deformity
Root deformities can have a variety of causes
Overview
Overview
Although root deformity is a problem that can occur with just about any type of plant, it tends to be more noticeable in root crops such as carrots, parsnips, or potatoes. In any plant, it is important to address root deformity in its early stages so that they are able to grow to their fullest potential.
Symptom Analysis
Symptom Analysis
There are countless symptoms of root deformity and associated root problems in plants. In fact, these symptoms often co-occur with dozens of others, making it hard to tell which disease, pest, or environmental condition is responsible for a given plant’s suffering and failure to thrive.
Some of the most common symptoms you will see in plants with root deformity problems are:
  • Roots that are misshapen, rotten, or stunted
  • Roots that become brown and mushy as areas begin to die back
  • Stunted growth
  • Wilted or yellowing leaves
  • Premature leaf drop
  • Delayed blooming
Root deformity is not a disease that occurs on its own but is instead a symptom of many other common plant problems. Because of that, it is exceedingly important to examine all the issues to figure out what is going wrong.
Disease Cause
Disease Cause
There are several reasons why plants may develop malformed roots.
One of the most common is related to the environment. Environmental conditions related to moisture, soil structure, and nutrient load can commonly cause issues with root formation.
Not all soils are conducive to creating healthy roots. Roots need room to grow, spread, and breathe. When plants are grown in soil that is rocky or composed of heavy clay, it does not give them the opportunity to do so. Roots that do most of the “storage work” for plants, such as those of beets, kohlrabi, potatoes, carrots, turnips, and so on, are most likely to suffer from this cause.
There are various plant diseases that can cause plant roots to become malformed. These are generally plant- and species-specific but can include diseases such as root rot. Clubroot is another disease that typically affects plants in the mustard family, such as cabbage, broccoli, and Brussels sprouts.
There are even pests, such as root-knot nematodes, that can cause root damage, malformation, and death in a long list of plant species.
Solutions
Solutions
There are a few key steps to take if root deformity is suspected:
  • Prevent the spread of fungal diseases - if a fungal pathogen is to blame for the root deformity, there’s not much to do once it sets into the soil. Prevent it from spreading by applying a fungicide or adjusting the soil pH based on what is needed for the specific type of plant. Do not re-use this soil for future plantings.
  • Harvest selectively - for root vegetables like carrots or parsnips, the tubers may still be usable. Cull some of the crop or cut away affected areas, but the rest should still be safe to eat.
Prevention
Prevention
There are several steps for preventing root deformity from impacting your plants;
  • Address spacing issues - one of the most common reasons for root deformity is plants that are growing too close together. Space plants according to the recommendations listed on the seed packet or in the planting guidelines.
  • Thin plants - some plants benefit from thinning after they have germinated. Consult the planting guidelines for each species, but know that removing all but the healthiest seedlings can provide them with the space they need to grow.
  • Improve soil quality - rocky and compacted soils can cause root deformity. Aerate the soil prior to planting and remove as many rocky or clay-dominated areas as possible.
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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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weed

Weed Control

weed
Weeds
Native to Eurasia, wild radish has spread to parts of Africa, the Americas, and Oceania. It is defined as an invasive species or agricultural weed in multiple states in the United States. It has been planted for edible purposes and to attract pollinators. However, wild radish can act as an alternative host for a variety of agricultural pests and is a weed in agricultural contexts. It spreads rapidly via prolific seed production and establishes readily in disturbed habitats. Integration of herbicide and other methods such as plowing or soil polarization is typically required for effective control.
How to Control it
Wild radish can be very difficult to manage once it establishes, so it is advised to remove it before flowering and fruiting in order to prevent seed production, and consequently the spread of this weedy plant. Wild radish plants are easiest to remove when they are young, so regular garden inspection and weed removal are necessary measures for their control. Mulching: Covering the soil with sawdust, straws, or black mulches during the seed stage can effectively inhibit seed germination and growth of the seedling. Generally, this method is used in winter or spring to inhibit the germination of seeds in the soil. If the weeds have already flowered and bore fruit, this method can be used to prevent the seeds to reach the soil, reducing the level of infestation significantly in the next growing season. Pulling out: Pull the plants from the soil using adequate tools before the plants bear fruit. If the soil is dry, add water to make it softer and dig out the plant more efficiently. Deep tillage can be performed to remove the remaining roots. This method has shown to be especially effective for weeds that are in seedling stage or low growing size. Pruning: Pruning wild radish plants before they bear fruit can effectively prevent them from reoccurring, especially if they are annuals. If biennials are in question, pruning should be performed the following year too. Plowing: Before planting crops or other plants, plow the soil (at least 20 cm deep), collect the plant roots, leave them exposed to the sun or bury them deeply. Discarded plant material can be added to the plant mix for making organic fertilizer and compost. Chemical control: There are many available herbicides for wild radish control. Make sure to read and follow the application instructions carefully, and spray on a windless day to avoid negative effects on non-target species
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distribution

Distribution Map

Habitat

Fields, pastures, sandy non-calcareous soils

Map

distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
plant_info

More Info

Flower Color
Flower Color
White
Yellow
Pink
Purple
Bloom Time
Bloom Time
Summer, Fall
Leaf Color
Leaf Color
Green
Blue

Name story

Wild radish
Raphanus raphanistrum is thought to be the ancestor of Raphanus sativus and with this association, it is perhaps more deserving of the common name of wild radish.
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