Plant Care Sow Thistle

Sow Thistle

Also known as

Common Sowthistle, Common Sowthistle, Sow thistle, Common sowthistle, Smooth sow thistle, Annual sow thistle, Hare's colwort, Hare's thistle, Milky tassel, Milk thistle, Soft thistle and Swinies

Taxonomy

Sonchus oleraceus
Sonchus
Asteraceae
Asterales

How to care for Sow Thistle

💦 Water

How often to water your Sow Thistle

Water needs for Sow Thistle
0.5 cups
every 9

Sow Thistle needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Calculate water needs of Sow Thistle

Water 0.5 cups every
9

Does your plant get direct sunlight?

Select the pot size

5"
☀️ Light

Finding light for Common Sowthistle in your home

Light needs and placement for plant Sow Thistle: 1ft from a window
1ft or less from
a window

Sow Thistle love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Sow Thistle does not tolerate low-light 🚫.

Select your region to see how the current weather in your area affects the placement of Sow Thistle in your home 🏡.

🪴 Nutrients

How to fertilize Sow Thistle

Nutrient, fertilizer, and repotting needs for Sow Thistle: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Sow Thistle after it doubles in size or once a year—whichever comes first.

💡 FAQs
⭐ Difficulty Level

Sow Thistle is generally considered an easy-to-care-for plant and makes a great choice for beginners!

Benefits of Growing Common Sowthistle →

Common Common Sowthistle Problems →


💦 Water Needs

Sow Thistle prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Common Sowthistle Water Frequency →

Common Sowthistle Root Rot →


☀️ Sunlight Needs

Sow Thistle requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

Common Sowthistle Light Requirements →

Common Sowthistle Direct Sunlight Needs & Tolerance →


🐶 🐈 👶 Toxicity

Greg does not have confirmed data on this plant’s toxicity. If you, a family member, or a pet consumes plant material of unknown toxicity, it’s always best to consult a medical professional.

If you or someone else ingested this plant, call Poison Control at US (800) 222-1222. If a pet consumed this plant, contact your veterinarian or the ASPCA at US (888) 426-4435.


🪴 Soil

Sow Thistle does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!

When and How to Successfully Repot Common Sowthistle →


💩 Fertilizer

Sow Thistle should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!

How Much and When to Fertilize Common Sowthistle →


⬆️ ⬇️ Growth Pattern

Sow Thistle grows vertically and new growth will emerge from the top of the plant.

How and When to Prune Common Sowthistle →


🌦️ Growing Outdoors

USDA Hardiness Zone
Sow Thistle can be grown outdoors in USDA Hardiness Zones 6a-9b. Find your local hardiness zone here.

Common Sowthistle Temperature Tolerance →


🌱 Propagation

The seeds of Sow Thistle can be used to grow new plants! After your plant flowers, any seeds that formed can be collected and germinated in potting soil.


🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.


Care Summary for Sow Thistle

Sow Thistle

Sow Thistle


Greg recommends:

Water

0.5 cups every 9 days

Placement

< 1ft from a window

Nutrients

Repot after 2x growth

Based on the 4” pot your plant is in, and that it doesn’t get direct sunlight.

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