Spear Thistle

Spear 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.

Spear Thistle Water Frequency →

Spear Thistle Root Rot →

Spear 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 🏡.

Spear Thistle Light Requirements →

Spear Thistle Direct Sunlight Needs & Tolerance →

Spear Thistle is not known to cause harm to humans or pets. Regardless, if you, a family member, a cat, or dog has ingested any plant material, please consult a doctor or a veterinarian.

Spear 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!

Best Soil Mix for Spear Thistle →

When and How to Successfully Repot Spear Thistle →

What Are Healthy Spear Thistle Roots →

Spear Thistle is a fast growing plant and may deplete the nutrients in its soil over time. Replenish them with a gentle organic fertilizer or compost every 1-2 months depending on your location and season. Fertilize more often during the growing season and in warmer and brighter climates.

How Much and When to Fertilize Spear Thistle →

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

Spear Thistle Lifecycle →

Spear Thistle Size Guide →

How and When to Prune Spear Thistle →

USDA Hardiness Zone
Spear Thistle can be grown outdoors in USDA Hardiness Zones 4a-8b. Find your local hardiness zone here.

Spear Thistle Temperature Tolerance →

Spear Thistle Hardiness Zones →

Is Spear Thistle a Weed? →

Yellow leaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely just your plant shedding old leaves.

Overwatering and root rot are the most likely cause of problems in Spear Thistle, since they are sensitive to wet soil. The leaves may also appear to be curling or drooping. Less often, yellow leaves are caused by underwatering, nutrient deficiencies, or pests.

Replace soggy soil with fresh, dry soil and download Greg to make sure your plant never gets overwatered again!

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.

• Common Bugs Affecting Spear Thistle →

What Eats Spear Thistle? →

• Drooping Spear Thistle Leaves →
• Spear Thistle Dropping Leaves →
• Spear Thistle Mushy Leaves →
• Black Spots on Spear Thistle →
• Brown Spots on Spear Thistle →
• Spear Thistle Leaves Falling Over →
• Spear Thistle Leaves Curling →
• Spear Thistle Yellow Leaves →
• Spear Thistle Root Rot →
• Why Is My Spear Thistle Wilting? →