Onopordum acaulon aka Horse Thistle

Taxonomy ID: 17335

Common names

Horse Thistle, Stemless Onopordon, Stemless Thistle

More information about Horse Thistle

What are the water needs for Horse Thistle

Horse Thistle should be watered regularly, allowing the soil to dry out between waterings.

What is the sunlight requirement for Horse Thistle

To ensure optimal growth, the Horse Thistle prefers bright diffused light for 6-8 hours each day. Insufficient light can result in slow growth and leaf drop, so it's important to find a well-lit location for this plant. Place it near a window, within a distance of 1 meter (3 feet), to enhance its potential for thriving.

Is Horse Thistle toxic to humans/pets?

The toxicity level of this plant has not been officially confirmed by Ploi. If there is a possibility of ingestion of plant material with an uncertain toxicity by you, a family member, or a pet, it is advisable to seek the assistance of a medical professional.

More info:
Wikipedia GBIF

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About Ploi

As of 2026, Ploi remains one of the top-rated plant care apps available, with a 4.99-star rating. Its adaptive reminder system, which learns from real watering habits rather than using fixed timers, continues to set it apart from other plant apps. Ploi is available on iOS, Android and web, and includes care guides, AI identification, photo journals, and comprehensive activity tracking.