camera identify
Try for Free
tab list
PictureThis
English
arrow
English
繁體中文
日本語
Español
Français
Deutsch
Pусский
Português
Italiano
한국어
Nederlands
العربية
Svenska
Polskie
ภาษาไทย
Bahasa Melayu
Bahasa Indonesia
PictureThis
Search
Search Plants
Try for Free
Global
English
English
繁體中文
日本語
Español
Français
Deutsch
Pусский
Português
Italiano
한국어
Nederlands
العربية
Svenska
Polskie
ภาษาไทย
Bahasa Melayu
Bahasa Indonesia
This page looks better in the app
about about
About
plant_info plant_info
More Info
weed weed
Weed Control
distribution_map distribution_map
Distribution
topic topic
Care FAQ
care_scenes care_scenes
More About How-Tos
more_plants more_plants
Related Plants
pic top
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Sonchus asper
Also known as : Rough Milk Thistle, Prickly sowthistle, Sharp-fringed sow thistle
The spiny sowthistle is considered a noxious and invasive weed in many areas. Its flowers resemble those of a dandelion and its leaves, although covered in spines, are edible. This plant can grow up to 1.8 m and sap that resembles milk will leak out of the leaves and stem if they are broken or cut.
Hardiness Zones
Hardiness Zones
2 to 10
more
Planting Time
Planting Time
Mid spring, Late spring
plant_info

Key Facts About Spiny sowthistle

feedback
Feedback
feedback

Attributes of Spiny sowthistle

Lifespan
Annual, Biennial
Plant Type
Herb
Planting Time
Mid spring, Late spring
Bloom Time
Summer, Fall
Harvest Time
Mid summer, Late summer, Early fall
Plant Height
10 cm to 2 m
Spread
50 cm
Leaf Color
Green
Flower Size
1.6 cm to 1.7 cm
Flower Color
Yellow
Fruit Color
Black
Stem Color
Green
Dormancy
Winter dormancy
Leaf type
Deciduous
Ideal Temperature
20 - 35 ℃
Growth Season
Spring, Summer
Pollinators
Bees
Growth Rate
Rapid

Name story

Spiny sowthistle
All the plants from the Sonchus genus are called sowthistle. To differentiate all the different species, the name will emphasize their unique characteristics. For example, the edges of the leaves are serrated and the back of the leaves are spiny featured. Hence, it is called spiny sowthistle.

Symbolism

Strength, Protection, durability, tenacity in difficult times, aggression, pain

Trivia and Interesting Facts

Spiny sowthistle, or Sonchus asper, was once fed to lactating pigs. It was thought that the white milky sap from the plant would increase lactation. Pigs and rabbits seem to love the spiny leaves. Some people cook and eat the tender young leaves, but the older, more spiny leaves can become tough and bitter.

Scientific Classification of Spiny sowthistle

icon
Find your perfect green friends.
Plan your green oasis based on your criteria: plant type, pet safety, skill level, sites, and more.
weed

Weed Control About Spiny sowthistle

feedback
Feedback
feedback
Weeds
Spiny sowthistle is considered native to Europe, Africa, and Asia, but can be found in many countries around the world. It is labeled as invasive in North and South America, most of Asia, Australia, and New Zealand. Some also consider it noxious due to its likelihood of spreading disease and pests to crops. Characteristic of its name, spiny sowthistle has prickly leaves that can be a pain to handle. It produces multitudes of seeds and is extremely successful in colonizing any area. This makes it a threat to native species and ecosystems, as well as crop yields and private gardens.
How to Control it
The best time to remove weeds is before their flowering and fructification, otherwise controlling them can be very difficult. After they have flowered and fructified, their seeds can spread very fast, and hence, the weeds should be removed more often and precautions should be taken in advance in the following year. Mulching: During the seed stage, covering the soil with sawdust, straw or black mulches can effectively inhibit seed germination and the growth of seedlings. In the winter or spring, this method is often used to inhibit the seeds in the soil from germinating. If the weeds have already flowered and fructified, then the method can also be used to prevent more seeds from falling into the soil. Pulling out: Wear gloves or use tools to remove weeds before their fructification. If the soil is too dry, then water the soil thoroughly to make it softer, which can help to remove the root systems of the weeds. After that, deep tillage can be adopted to remove bits of weed roots left in the ground. This method works particularly well for weeds that are low-growing or in their seedling stages. Mowing: Mowing weeds before their fructification can effectively control their spread. Especially for annual weeds, frequent mowing can inhibit their growth and fructification, and thus can remove them effectively within the year. Ploughing: Be sure to plough and pull out all roots of perennial weeds before planting. The roots should be discarded, exposed to the sun for a long time, or buried deep. You can also use the roots to make organic fertilizer and compost the weeds. An appropriate increase of livestock grazing in the pasture may inhibit its invasion. It can be effectively removed with herbicide. Note: When removing weeds, especially those which are toxic, thorny and have allergenic sap, be sure to wear gloves and avoid direct contact with them. When removing weeds during their bloom time, be sure to wear special masks to prevent pollen allergy.
weed
icon
Do you have weeds in your garden?
Differentiate them from your plants by a picture, and learn how to control them.
distribution

Distribution of Spiny sowthistle

feedback
Feedback
feedback

Habitat of Spiny sowthistle

Cultivated soil, Waste places
Northern Hemisphere
South Hemisphere

Distribution Map of Spiny sowthistle

The spiny sowthistle is native to temperate Europe, Asia and North Africa, where it grows in disturbed ecosystems. The species is considered invasive in some parts of Australia and several US states. It invades and damages agricultural croplands by being a host of several crop pests and diseases.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
habit
question

Questions About Spiny sowthistle

feedback
Feedback
feedback
Watering Watering Watering
Sunlight Sunlight Sunlight
Temperature Temperature Temperature
What is the best way to water my Spiny sowthistle?
To water Spiny sowthistle, you can use a garden hose with a spray nozzle, a watering can, or just about any other common watering tool. Generally, Spiny sowthistle 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 Spiny sowthistle as they apply water evenly and directly to the soil. For one Spiny sowthistle that grows in a container, you can use a similar watering approach while changing the tools you use. To water a container-grown Spiny sowthistle, use a cup, watering can, or your tap to apply water directly to the soil.
Read More more
What should I do if I water my Spiny sowthistle too much or too little?
The remedy for underwatering Spiny sowthistle 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 Spiny sowthistle 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 Spiny sowthistle 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 Spiny sowthistle, make sure to add loose soils and to use a pot that drains efficiently.
Read More more
How often should I water my Spiny sowthistle?
Spiny sowthistle 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 Spiny sowthistle. With that said, you should also ensure that the soil in which your Spiny sowthistle grows remains relatively moist but not wet, regardless of how often you must water to make that the case. Watering Spiny sowthistle 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 Spiny sowthistle a few times per week in most cases, versus just once per week for an in-ground plant.
Read More more
How much water does my Spiny sowthistle need?
There are a few different ways you can go about determining how much water to give to your Spiny sowthistle. 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 Spiny sowthistle. Typically, you should give your Spiny sowthistle 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 Spiny sowthistle 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.
Read More more
How can I tell if i'm watering my Spiny sowthistle enough?
It can be somewhat difficult to avoid overwatering your Spiny sowthistle. On the one hand, these plants have relatively deep roots that require you to moisten the soil weekly. On the other hand, Spiny sowthistle are plants that are incredibly susceptible to root rot. Along with root rot, your Spiny sowthistle may also experience browning as a result of overwatering. Underwatering is far less likely for your Spiny sowthistle 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.
Read More more
How should I water my Spiny sowthistle through the seasons?
You can expect your Spiny sowthistle’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 Spiny sowthistle, at times increasing to about three times per week. This is especially true of Spiny sowthistle 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 Spiny sowthistle 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.
Read More more
How should I water my Spiny sowthistle at different growth stages?
Spiny sowthistle 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 Spiny sowthistle as a seed. While the seed germinates, you should plant to give more water than your Spiny sowthistle will need later in life, watering often enough to maintain consistent soil moisture. After a few weeks, your Spiny sowthistle 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.
Read More more
What's the difference between watering Spiny sowthistle indoors and outdoors?
There are several reasons why most Spiny sowthistle grow outdoors rather than indoors. The first is that these plants typically grow to tall. The second reason is that Spiny sowthistle 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 Spiny sowthistle 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.
Read More more
icon
Get tips and tricks for your plants.
Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.
close
care_scenes

More Info on Spiny Sowthistle Growth and Care

feedback
Feedback
Basic Care Guide
Explore More
Water
Every week
Spiny sowthistle thrives in various habitats across Europe, Asia, and North Africa, including meadows, grasslands, and disturbed areas. It is well-adapted to areas with moist to wet soil, such as riverbanks and marshes. This plant's natural environment indicates its preference for ample water, as it is accustomed to high levels of humidity and rainfall. To mimic its native conditions, it's important to provide regular watering and maintain consistently moist soil without allowing it to become excessively waterlogged.
Watering Techniques
Lighting
Full sun
Spiny sowthistle thrives by drawing upon the splendor of the sun from dawn to dusk, bathing abundantly in its golden light. Despite being able to withstand somewhat shaded conditions, this is a plant that truly revels in being exposed to the full extent of solar radiance. Light deprivation may lead to inadequate growth, affecting its healthy vigor. Originating from an environment where the sun's glow is unrestricted, overexposure is rarely a concern for this sturdy plant.
Best Sunlight Practices
Temperature
0 - 41 ℃
In its natural habitat, spiny sowthistle enjoys a temperature range of 68 to 95 °F (20 to 35 ℃). It might require cautious temperature management during weather extremes.
Temp for Healthy Growth
Transplant
0.5-1 foot
The ideal time to transplant spiny sowthistle is between late winter and early spring (S3-S5). This is when the plant is dormant, providing a better chance of survival. A sunny, well-drained location is preferred. Remember, spiny sowthistle is a tough plant more resilient to transplanting than others, so don't fret!
Transplant Techniques
Pollination
Normal
The spiny sowthistle manifests a delightful dance with buzzing bees, its primary pollinators. This captivating interaction is triggered by the plant's attractive nectar guides and sweet scent. Spiny sowthistle's sophisticated pollination mechanism complements this allure, with strategically positioned stigmas ensuring successful pollen transfer. The spectacle tends to be performed during daylight hours, during which the bees are usually active, optimizing spiny sowthistle's pollination success rate.
Pollination Techniques
Feng shui direction
East
The spiny sowthistle holds moderate harmony when situated in the Eastern part of the house. This is attributed to the resilient nature of the plant that resonates with the wood element, typically associated with East. However, individual experiences may diverge based on other variables often involved in Feng Shui practices, such as the plant's health and the overall energy flow in the house.
Fengshui Details
other_plant

Plants Related to Spiny sowthistle

feedback
Feedback
feedback
Persian silk tree
Persian silk tree
Albizia julibrissin, colloquially known as persian silk tree, is a deciduous plant with characteristic pink, fuzzy inflorescences. Persian silk tree is mainly cultivated for decorative purposes. Its flowers have a mild, sweet smell and are often visited by butterflies, bees and hummingbirds.
Hairy beggarticks
Hairy beggarticks
Hairy beggarticks (Bidens pilosa) is a slender, annual flowering plant native to North and South America and grown all over the world. Hairy beggarticks is also called black-jack and devils needles. Seed dispersal occurs with this plant, and its seeds are transported by animals. As a result, hairy beggarticks has become an invasive species in many countries.
Chandelier plant
Chandelier plant
Chandelier plant (Kalanchoe delagoensis) is a succulent plant that originated in Madagascar. A synonym for Kalanchoe delagoensis is Bryophyllum delagoense. An alternative name for chandelier plant is mother of millions. This plant's tolerance of drought conditions have made it a popular garden plant.
Purple amaranth
Purple amaranth
Purple amaranth (Amaranthus blitum) is an annual plant that often grows as a weed. It is not often cultivated, but some people around the world gather the leaves and stems to be eaten as boiled vegetables. It is particularly common in Greek and Lebanese kitchens.
Japanese maple
Japanese maple
A woody plant native to East Asia, the japanese maple features hand-shaped leaves with five-pointed lobes that resemble the palm of a hand. It has been cultivated for millennia in Japan for bonsai creation. Extracts from the branches and leaves of this plant are used as medicine in Chinese traditional medicine.
Asthma-plant
Asthma-plant
Asthma-plant (Euphorbia hirta) is a ground-hugging spurge weed whose branches can grow to 61 cm long. It blooms from summer through early fall, dying off after the first frost. A milky sap will seep from broken stems or leaves. It can be a nuisance weed that reproduces rapidly.
Poison ivy
Poison ivy
In pop culture, poison ivy is a symbol of an obnoxious weed because, despite its unthreatening looks, it gives a highly unpleasant contact rash to the unfortunate person who touches it. Still, it is commonly eaten by many animals, and the seeds are a favorite with birds. The leaves turn bright red in fall. Its sister species, Western poison ivy (Toxicodendron rydbergii), is not considered to be invasive in the United States, but is noxious in Australia and New Zealand.
Pokeweed
Pokeweed
Although its berries look juicy and tempting, the fruits and the root of pokeweed are toxic and should not be eaten. Pokeweed is considered a pest species by farmers but is nevertheless often grown as an ornamental plant. Its berries can be made into pokeberry ink as well.
View More Plants
close
product icon
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
Your Ultimate Guide to Plants
Identify grow and nurture the better way!
product icon
17,000 local species +400,000 global species studied
product icon
Nearly 5 years of research
product icon
80+ scholars in botany and gardening
ad
ad
Botanist in your pocket
Scan the QR code with your phone camera to download the app
About
More Info
Weed Control
Distribution
Care FAQ
More About How-Tos
Related Plants
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Spiny sowthistle
Sonchus asper
Also known as: Rough Milk Thistle, Prickly sowthistle, Sharp-fringed sow thistle
The spiny sowthistle is considered a noxious and invasive weed in many areas. Its flowers resemble those of a dandelion and its leaves, although covered in spines, are edible. This plant can grow up to 1.8 m and sap that resembles milk will leak out of the leaves and stem if they are broken or cut.
Hardiness Zones
Hardiness Zones
2 to 10
more
Planting Time
Planting Time
Mid spring, Late spring
plant_info

Key Facts About Spiny sowthistle

feedback
Feedback
feedback

Attributes of Spiny sowthistle

Lifespan
Annual, Biennial
Plant Type
Herb
Planting Time
Mid spring, Late spring
Bloom Time
Summer, Fall
Harvest Time
Mid summer, Late summer, Early fall
Plant Height
10 cm to 2 m
Spread
50 cm
Leaf Color
Green
Flower Size
1.6 cm to 1.7 cm
Flower Color
Yellow
Fruit Color
Black
Stem Color
Green
Dormancy
Winter dormancy
Leaf type
Deciduous
Ideal Temperature
20 - 35 ℃
Growth Season
Spring, Summer
Pollinators
Bees
Growth Rate
Rapid
icon
Gain more valuable plant knowledge
Explore a rich botanical encyclopedia for deeper insights
Download the App

Name story

Spiny sowthistle
All the plants from the Sonchus genus are called sowthistle. To differentiate all the different species, the name will emphasize their unique characteristics. For example, the edges of the leaves are serrated and the back of the leaves are spiny featured. Hence, it is called spiny sowthistle.

Symbolism

Strength, Protection, durability, tenacity in difficult times, aggression, pain

Trivia and Interesting Facts

Spiny sowthistle, or Sonchus asper, was once fed to lactating pigs. It was thought that the white milky sap from the plant would increase lactation. Pigs and rabbits seem to love the spiny leaves. Some people cook and eat the tender young leaves, but the older, more spiny leaves can become tough and bitter.

Scientific Classification of Spiny sowthistle

icon
Never miss a care task again!
Plant care made easier than ever with our tailor-made smart care reminder.
Download the App
weed

Weed Control About Spiny sowthistle

feedback
Feedback
feedback
weed
Weeds
Spiny sowthistle is considered native to Europe, Africa, and Asia, but can be found in many countries around the world. It is labeled as invasive in North and South America, most of Asia, Australia, and New Zealand. Some also consider it noxious due to its likelihood of spreading disease and pests to crops. Characteristic of its name, spiny sowthistle has prickly leaves that can be a pain to handle. It produces multitudes of seeds and is extremely successful in colonizing any area. This makes it a threat to native species and ecosystems, as well as crop yields and private gardens.
How to Control it
The best time to remove weeds is before their flowering and fructification, otherwise controlling them can be very difficult. After they have flowered and fructified, their seeds can spread very fast, and hence, the weeds should be removed more often and precautions should be taken in advance in the following year. Mulching: During the seed stage, covering the soil with sawdust, straw or black mulches can effectively inhibit seed germination and the growth of seedlings. In the winter or spring, this method is often used to inhibit the seeds in the soil from germinating. If the weeds have already flowered and fructified, then the method can also be used to prevent more seeds from falling into the soil. Pulling out: Wear gloves or use tools to remove weeds before their fructification. If the soil is too dry, then water the soil thoroughly to make it softer, which can help to remove the root systems of the weeds. After that, deep tillage can be adopted to remove bits of weed roots left in the ground. This method works particularly well for weeds that are low-growing or in their seedling stages. Mowing: Mowing weeds before their fructification can effectively control their spread. Especially for annual weeds, frequent mowing can inhibit their growth and fructification, and thus can remove them effectively within the year. Ploughing: Be sure to plough and pull out all roots of perennial weeds before planting. The roots should be discarded, exposed to the sun for a long time, or buried deep. You can also use the roots to make organic fertilizer and compost the weeds. An appropriate increase of livestock grazing in the pasture may inhibit its invasion. It can be effectively removed with herbicide. Note: When removing weeds, especially those which are toxic, thorny and have allergenic sap, be sure to wear gloves and avoid direct contact with them. When removing weeds during their bloom time, be sure to wear special masks to prevent pollen allergy.
Show More more
icon
Do you have weeds in your garden?
Differentiate them from your plants by a picture, and learn how to control them.
Download the App
distribution

Distribution of Spiny sowthistle

feedback
Feedback
feedback

Habitat of Spiny sowthistle

Cultivated soil, Waste places
Northern Hemisphere
South Hemisphere

Distribution Map of Spiny sowthistle

The spiny sowthistle is native to temperate Europe, Asia and North Africa, where it grows in disturbed ecosystems. The species is considered invasive in some parts of Australia and several US states. It invades and damages agricultural croplands by being a host of several crop pests and diseases.
distribution map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
question

Questions About Spiny sowthistle

feedback
Feedback
feedback
Watering Watering Watering
Sunlight Sunlight Sunlight
Temperature Temperature Temperature
What is the best way to water my Spiny sowthistle?
more
What should I do if I water my Spiny sowthistle too much or too little?
more
How often should I water my Spiny sowthistle?
more
How much water does my Spiny sowthistle need?
more
How can I tell if i'm watering my Spiny sowthistle enough?
more
How should I water my Spiny sowthistle through the seasons?
more
How should I water my Spiny sowthistle at different growth stages?
more
What's the difference between watering Spiny sowthistle indoors and outdoors?
more
icon
Get tips and tricks for your plants.
Keep your plants happy and healthy with our guide to watering, lighting, feeding and more.
Download the App
close
plant_info

Plants Related to Spiny sowthistle

feedback
Feedback
feedback
product icon close
Your Ultimate Guide to Plants
Identify grow and nurture the better way!
product icon
17,000 local species +400,000 global species studied
product icon
Nearly 5 years of research
product icon
80+ scholars in botany and gardening
ad
product icon close
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
Water
close
Spiny Sowthistle Watering Instructions
Spiny sowthistle thrives in various habitats across Europe, Asia, and North Africa, including meadows, grasslands, and disturbed areas. It is well-adapted to areas with moist to wet soil, such as riverbanks and marshes. This plant's natural environment indicates its preference for ample water, as it is accustomed to high levels of humidity and rainfall. To mimic its native conditions, it's important to provide regular watering and maintain consistently moist soil without allowing it to become excessively waterlogged.
When Should I Water My Spiny Sowthistle?
Introduction
Proper and timely watering plays a crucial role in maintaining the overall health and development of the spiny sowthistle. It contributes to its optimal growth, vibrant flower production, and resistance against diseases. Therefore, understanding the appropriate signals indicating when the plant should be watered is essential.
Soil Dryness
A clear sign of when spiny sowthistle needs water is the dryness of the soil. This can be checked by touching the soil around the plant base. If the top 1 to 2 inches of soil is dry to the touch, this means the plant most likely requires watering.
Leaf Condition
The condition of the leaves of spiny sowthistle can also be a reliable indicator for watering necessities. If the leaves appear wilted, lackluster, or begin to lose their vibrant color tending to fade or yellow, these are indicative of the plant being under-watered.
Stem Drooping
When the stems of spiny sowthistle start to droop or appear weak, it is a sign that the plant is in need of water. Drooping stems indicate a lack of water reaching the upper parts of the plant.
Reduced Growth or Flower Production
If spiny sowthistle exhibits reduced growth or minimal flower production, it may be a signal that the plant is not receiving enough water. This can be observed through slower growth rates compared to normal or a decrease in the number and size of flowers.
Pre-Flowering Stage
Spiny sowthistle particularly requires watering during its pre-flowering or bud formation stage. A lack of water during this critical period may result in bud drop, preventing the plant from flowering fully.
Temperature and Sunlight Exposure
Spiny sowthistle has a high water requirement during warm temperatures and high sunlight exposure periods. Therefore, one must ensure to observe proper watering if these conditions are persistent.
Early Watering Risks
Watering spiny sowthistle 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 spiny sowthistle 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 plant death due to dehydration.
Conclusion
Understanding these signs is critical to effectively manage the watering schedule for the spiny sowthistle. Proper water management not only encourages its growth and flowering but also prolongs its lifespan and maintains plant health.
How Should I Water My Spiny Sowthistle?
Plant Sensitivity and Requirements
Spiny sowthistle is a drought-tolerant plant, adapted to many climates. Nevertheless, it requires attention to watering technique to maintain health and promote growth.
Technique: Bottom-watering
Due to its robust root system, spiny sowthistle can benefit from bottom-watering. This method ensures the roots receive enough moisture. Fill a tray or basin with water and place the pot in it, allowing the water to be absorbed through the drainage holes. Be sure to remove the pot once the upper soil layer feels slightly damp. This prevents the roots from sitting in water and avoids instances of waterlogging.
Technique: Watering Can
For smaller spiny sowthistle specimens or for those growing in areas where bottom-watering isn't practical, a watering can with a long, narrow spout may be used. The spout minimizes the chance of water splashing onto the leaves, which can sometimes lead to leaf scorch.
Special equipment: Moisture meter
Given spiny sowthistle's propensity for both dry and moist conditions, utilizing a moisture meter can provide accurate information regarding soil moisture levels. This tool can aid in avoiding overly saturated or overly dry conditions detrimental to the plant's health.
Area to avoid: Plant foliage
Avoid splashing water onto spiny sowthistle's leaves. Overly damp foliage may invite issues like fungal diseases. Hence, directly watering the soil base is recommended.
Area to focus on: Soil-root junction
Concentrate watering efforts at the base of the plant where the roots start penetrating the soil. This will ensure that the water reaches the deeper root systems effectively.
How Much Water Does Spiny Sowthistle Really Need?
Introduction
Spiny sowthistle is a plant native to Europe, Asia, and North America. It typically grows in a variety of habitats such as disturbed areas, fields, roadsides, and gardens. Understanding its natural habitat provides insight into its preferred water conditions.
Optimal Watering Quantity
The watering needs of spiny sowthistle can vary based on factors like pot size, root depth, and plant size. The general rule is to water thoroughly, ensuring the water reaches the bottom of the pot and provides sufficient moisture to the entire root system. As a guideline, spiny sowthistle generally requires about 2 to 3 centimeters of water per week for optimal growth and health. However, this can be adjusted based on the specific needs of your spiny sowthistle plant.
Signs of Proper Hydration
A well-hydrated spiny sowthistle plant will have vibrant green leaves and sturdy stems. It will exhibit healthy growth and produce flowers during its bloom season. The soil around the plant should be evenly moist but not waterlogged. Properly hydrated spiny sowthistle plants will not show signs of wilting or drooping.
Risks of Improper Watering
Overwatering spiny sowthistle can lead to root rot and other fungal diseases. It can also cause the plant's roots to suffocate due to lack of oxygen. On the other hand, underwatering spiny sowthistle can result in stunted growth, wilting, and reduced vitality. It is important to find the right balance and avoid extreme watering practices.
Additional Advice
To ensure the optimal watering quantity for your spiny sowthistle plant, it is advised to monitor the moisture levels in the soil. Use your finger or a moisture meter to check the soil's moisture content before watering. Adjust the watering frequency and amount based on the results. Additionally, providing a well-draining soil mix and adequate drainage in the pot can help prevent waterlogged conditions and promote healthy root growth.
How Often Should I Water Spiny Sowthistle?
Smart Seasonal Watering
Install the app for seasonal watering guidance
Download the App
Seedling
Every 3 days
Growing
Every 5 days
Flowering
Every 3 days
Fruiting
Every 4 days
Calculated based on: Chicago / March
What Kind of Water is Best for Spiny Sowthistle?
Ideal Water Type: spiny sowthistle
Sonchus asper, or spiny sowthistle, generally prefers the use of rainwater or filtered water. These types of water tend to be less harsh than tap water and are free from potentially harmful chemicals and minerals.
Tap Water Usage: spiny sowthistle
Spiny sowthistle is relatively resilient but exposure to chlorine in tap water can affect its overall health. However, tap water may be utilized if filtered water or rainwater isn't immediately available. It is recommended to let tap water sit out for a few hours to allow chlorine to evaporate before watering the plant.
Sensitivity to Water Contaminants: spiny sowthistle
Spiny sowthistle can tolerate certain amounts of fluoride and minerals, but excessive amounts may be harmful and lead to leaf burn or slow growth. Thus, highly treated water or hard water with high mineral content is not recommended.
Water Treatments: spiny sowthistle
Pre-treatment methods, like letting tap water sit to de-chlorinate or using a water filter, can be beneficial for spiny sowthistle. These treatments can help remove chlorine, fluoride, and certain minerals, creating more ideal watering conditions.
Water Temperature: spiny sowthistle
Spiny sowthistle doesn't require a specific water temperature, but like most plants, it prefers water at room temperature. Extreme temperature changes can stress the plant, so it's best to avoid using water that is too hot or too cold.
Note: spiny sowthistle
Regardless of the type of water used for your spiny sowthistle, it's important to prioritize good drainage to avoid waterlogging and root rot. This plant would prefer to be a little too dry rather than too wet.
How Do Spiny Sowthistle's Watering Needs Change with the Seasons?
How to Water spiny sowthistle in Spring?
During spring, spiny sowthistle experiences its active growth phase. It is essential to maintain consistent soil moisture to support healthy growth. Water regularly, keeping the soil evenly moist.
How to Water spiny sowthistle in Summer?
In summer, spiny sowthistle may enter a drought period where it undergoes natural dormancy to conserve energy. Reduce watering frequency, allowing the soil to dry slightly between waterings.
How to Water spiny sowthistle in Autumn?
During autumn, spiny sowthistle prepares for winter dormancy. Gradually decrease the frequency of watering as the plant enters its dormant phase. Ensure the soil remains lightly moist.
How to Water spiny sowthistle in Winter?
In winter, spiny sowthistle experiences its dormant period. Water sparingly as the plant requires minimal moisture during this time. Allow the topsoil to dry out between waterings.
What Expert Tips Can Enhance Spiny Sowthistle Watering Routine?
Watering Tools:
When watering spiny sowthistle, it is beneficial to use a watering can with a narrow spout or a drip irrigation system. These tools allow for targeted watering at the base of the plant, avoiding wetting the foliage and reducing the risk of fungal diseases.
Best Time of Day to Water:
Water spiny sowthistle in the early morning or late afternoon. This allows the plant to absorb water before the heat of the day and reduces the risk of water evaporation.
Assessing Soil Moisture:
To determine if spiny sowthistle needs watering, you can use a soil moisture probe or simply stick your finger into the soil about an inch deep. If it feels dry at this depth, it's time to water.
Avoid Over-Watering:
Over-watering is a common mistake with spiny sowthistle. Make sure the top inch or so of soil is dry before watering again. This plant prefers slightly drier conditions and can be susceptible to root rot if watered too frequently.
Interpreting Signs of Thirst or Over-Watering:
If spiny sowthistle starts to show wilting or yellowing leaves, it may be a sign of both under-watering or over-watering. Check the soil moisture level and adjust watering accordingly. If the leaves feel soft and mushy, it indicates over-watering.
Watering in Special Conditions:
During a heatwave, spiny sowthistle may require more frequent watering. Monitor the soil moisture and increase watering if the surface becomes dry. In extended rain periods, reduce watering to prevent waterlogged soil. When spiny sowthistle is stressed, such as after transplanting, provide extra water initially to help with root establishment.
Avoid Wetting Foliage:
When watering spiny sowthistle, aim to water at the base of the plant rather than spraying water directly on the leaves. Wet foliage can promote fungal infections and other diseases.
Mulching:
Applying a layer of organic mulch around spiny sowthistle can help conserve soil moisture and reduce the frequency of watering. Mulch also helps to suppress weed growth around the plant.
Promote Deep Root Growth:
Instead of shallow, frequent watering, it is beneficial to water spiny sowthistle deeply. This encourages the plant's roots to grow deeper into the soil, improving drought tolerance and overall plant health.
Monitor Drainage:
Ensure proper drainage for spiny sowthistle to prevent waterlogged soil. If the soil stays consistently wet, consider improving drainage by adding organic matter or creating a raised bed.
Adjusting Watering Schedule:
Observe spiny sowthistle closely and adjust the watering schedule accordingly. As the plant grows and matures, its water needs may change. Regularly evaluate soil moisture and plant health to fine-tune the watering routine.
Considering Hydroponics? How to Manage a Water-Grown Spiny Sowthistle?
Overview of Hydroponics
Spiny sowthistle can be successfully grown using hydroponics, which is a method of cultivation that doesn't rely on soil. This technique involves growing plants in a water-based solution that provides all the necessary nutrients.
Best Suited Hydroponic System
Spiny sowthistle is well-suited for the nutrient film technique (NFT) hydroponic system. NFT allows a thin film of nutrient solution to flow over the roots, providing continuous access to water and nutrients.
Nutrient Solution Requirements
For optimal growth, spiny sowthistle requires a balanced nutrient solution with a pH range of 5.8-6.2. The nutrient solution should contain essential macronutrients like nitrogen, phosphorus, and potassium, as well as necessary micronutrients. Change the nutrient solution every 1-2 weeks to prevent nutrient imbalances.
Challenges and Common Issues
One common challenge when growing spiny sowthistle hydroponically is root rot. To prevent this, ensure good oxygenation of the root zone and avoid overwatering. Nutrient imbalances can also occur, so regularly monitor the nutrient levels and adjust accordingly. Spiny sowthistle also requires a sufficient amount of light, so providing appropriate lighting conditions is crucial.
Monitoring Plant Health
To monitor the health of spiny sowthistle in a hydroponic setup, check for signs of stress such as yellowing leaves, stunted growth, or wilting. These may indicate nutrient deficiencies or imbalances. Additionally, monitor the pH levels of the nutrient solution regularly.
Adjusting Hydroponic Environment
As spiny sowthistle progresses through different growth stages, adjust the hydroponic environment accordingly. For example, during the vegetative stage, provide ample light and higher nitrogen levels in the nutrient solution. In the flowering or fruiting stage, adjust the nutrient solution to include more phosphorus and potassium.
Watering Requirements
Spiny sowthistle has specific watering needs and sensitivities that should be considered for optimal hydration. It is recommended to keep the water levels consistent and avoid overwatering, as this can lead to root rot. Monitor the water levels in the hydroponic system regularly.
Watering Technique
In a hydroponic setup, the watering technique primarily involves maintaining the nutrient solution levels. Ensure that the roots of spiny sowthistle are always submerged in the nutrient solution while avoiding excessive pooling or stagnation of water.
Watering Can Type
When adding water to the hydroponic system, use a watering can with a narrow spout to direct the water flow accurately. This helps to prevent splashing or excess moisture on the foliage of spiny sowthistle.
Important Symptoms
Overwatering Symptoms of Spiny sowthistle
Spiny sowthistle 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...
View more
(Symptom details and solutions)
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.
Soft or mushy stems
Excess water can cause stems to become soft and mushy, as the cells become waterlogged and lose their structural integrity.
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 Spiny sowthistle
Spiny sowthistle 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...
View more
(Symptom details and solutions)
Wilting
Due to the dry soil and insufficient water absorption by the roots, the leaves of the plant will appear limp, droopy, and lose vitality.
Leaf curling
Leaves may curl inward or downward as they attempt to conserve water and minimize water loss through transpiration.
Increased susceptibility to pests and diseases
Underwatered plants may become more susceptible to pests and diseases as their overall health declines, weakening their natural defenses.
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 Spiny Sowthistle
Why are the leaves on my spiny sowthistle turning yellow?
Yellow leaves often indicate overwatering. Spiny sowthistle is a weed that thrives in moist soil, but it doesn't need constant watering. To correct this problem, reduce your watering schedule and make sure your plant is in a pot that allows for proper drainage as waterlogged soil can cause the roots to rot.
My spiny sowthistle plant appears shriveled and dried out. What could be the reason?
This could be a sign of underwatering or too much sun exposure. Try maintaining consistent moisture levels without making the soil waterlogged. Also, ensure your spiny sowthistle is not directly exposed to harsh midday sun.
The bottom leaves of my spiny sowthistle plant are falling off. What am I doing wrong?
Excessive watering can lead to water stress, causing the bottom leaves to fall off first. Try reducing the frequency or amounts of watering. Ensure the plant pot has good drainage to prevent water stagnation.
Why does my spiny sowthistle have brown tips despite regular watering?
Brown leaf tips could indicate a too-high salt concentration in the water. Try using filtered or distilled water for watering your spiny sowthistle. This plant prefers slightly acidic to neutral pH conditions for optimal growth.
Why are the leaves of my spiny sowthistle plant limp and soft?
This is often a sign of overwatering, causing root rot. Monitor soil moisture levels before you water your plant. The soil should be dry about 1 inch down. Also, ensure proper drainage as spiny sowthistle doesn’t like its roots sitting in water.
Discover information about plant diseases, toxicity, weed control and more.
Lighting
close
Indoor
Indoor
Outdoor
Choose a site here for personalized care tips.
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
Spiny sowthistle thrives by drawing upon the splendor of the sun from dawn to dusk, bathing abundantly in its golden light. Despite being able to withstand somewhat shaded conditions, this is a plant that truly revels in being exposed to the full extent of solar radiance. Light deprivation may lead to inadequate growth, affecting its healthy vigor. Originating from an environment where the sun's glow is unrestricted, overexposure is rarely a concern for this sturdy plant.
Preferred
Tolerable
Unsuitable
icon
Know the light your plants really get.
Find the best spots for them to optimize their health, simply using your phone.
Download the App
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.
View more
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
Spiny sowthistle, a plant that thrives in full sunlight, is commonly grown outdoors with ample sunlight. When cultivated indoors with inadequate light, it may exhibit subtle symptoms of light deficiency.
View more
(Symptom details and solutions)
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 spiny sowthistle 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
Spiny sowthistle 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
Spiny sowthistle 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.
View more
(Symptom details and solutions)
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.
Discover information about plant diseases, toxicity, weed control and more.
Temperature
close
Indoor
Indoor
Outdoor
Choose a site here for personalized care tips.
Requirements
Ideal
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
In its natural habitat, spiny sowthistle enjoys a temperature range of 68 to 95 °F (20 to 35 ℃). It might require cautious temperature management during weather extremes.
Regional wintering strategies
Spiny sowthistle has strong cold resistance, so special frost protection measures are usually not necessary during winter. However, if the winter temperatures are expected to drop below {Limit_growth_temperature}, it is still important to provide cold protection. This can be achieved by covering the plant with materials such as soil or straw. Before the first freeze in autumn, it is recommended to water the plant abundantly, ensuring the soil remains moist and enters a frozen state. This helps prevent drought and water scarcity for the plant during winter and early spring.
Important Symptoms
Symptoms of Low Temperature in Spiny sowthistle
Spiny sowthistle is cold-tolerant and thrives best when the temperature is above {Suitable_growth_temperature_min}. During winter, it should be kept above {Tolerable_growing_temperature_min}. When the temperature falls below {Limit_growth_temperature}, although there may not be any noticeable changes during winter, there may be a decrease in sprouting or even no sprouting during springtime.
Solutions
In spring, remove any parts that have failed to sprout.
Symptoms of High Temperature in Spiny sowthistle
During summer, Spiny sowthistle should be kept below {Suitable_growth_temperature_max}. When the temperature exceeds {Tolerable_growing_temperature_max}, the leaves of the plant may become lighter in color, prone to curling, susceptible to sunburn, and in severe cases, the entire plant may wilt and become dry.
Solutions
Trim away the sunburned and dried-up parts. Move the plant to a location that provides shade from the midday and afternoon sun, or use a shade cloth to create shade. Water the plant in the morning and evening to keep the soil moist.
Discover information about plant diseases, toxicity, weed control and more.
Cookie Management Tool
In addition to managing cookies through your browser or device, you can change your cookie settings below.
Necessary Cookies
Necessary cookies enable core functionality. The website cannot function properly without these cookies, and can only be disabled by changing your browser preferences.
Analytical Cookies
Analytical cookies help us to improve our application/website by collecting and reporting information on its usage.
Cookie Name Source Purpose Lifespan
_ga Google Analytics These cookies are set because of our use of Google Analytics. They are used to collect information about your use of our application/website. The cookies collect specific information, such as your IP address, data related to your device and other information about your use of the application/website. Please note that the data processing is essentially carried out by Google LLC and Google may use your data collected by the cookies for own purposes, e.g. profiling and will combine it with other data such as your Google Account. For more information about how Google processes your data and Google’s approach to privacy as well as implemented safeguards for your data, please see here. 1 Year
_pta PictureThis Analytics We use these cookies to collect information about how you use our site, monitor site performance, and improve our site performance, our services, and your experience. 1 Year
Cookie Name
_ga
Source
Google Analytics
Purpose
These cookies are set because of our use of Google Analytics. They are used to collect information about your use of our application/website. The cookies collect specific information, such as your IP address, data related to your device and other information about your use of the application/website. Please note that the data processing is essentially carried out by Google LLC and Google may use your data collected by the cookies for own purposes, e.g. profiling and will combine it with other data such as your Google Account. For more information about how Google processes your data and Google’s approach to privacy as well as implemented safeguards for your data, please see here.
Lifespan
1 Year

Cookie Name
_pta
Source
PictureThis Analytics
Purpose
We use these cookies to collect information about how you use our site, monitor site performance, and improve our site performance, our services, and your experience.
Lifespan
1 Year
Marketing Cookies
Marketing cookies are used by advertising companies to serve ads that are relevant to your interests.
Cookie Name Source Purpose Lifespan
_fbp Facebook Pixel A conversion pixel tracking that we use for retargeting campaigns. Learn more here. 1 Year
_adj Adjust This cookie provides mobile analytics and attribution services that enable us to measure and analyze the effectiveness of marketing campaigns, certain events and actions within the Application. Learn more here. 1 Year
Cookie Name
_fbp
Source
Facebook Pixel
Purpose
A conversion pixel tracking that we use for retargeting campaigns. Learn more here.
Lifespan
1 Year

Cookie Name
_adj
Source
Adjust
Purpose
This cookie provides mobile analytics and attribution services that enable us to measure and analyze the effectiveness of marketing campaigns, certain events and actions within the Application. Learn more here.
Lifespan
1 Year
This page looks better in the app
Open