Bull Thistle is a biennial plant with spiny leaves and purple flowers. It is considered a weed in many areas due to its aggressive growth and spiny nature.
Habitat
Commonly found in pastures, roadsides, and disturbed areas.
Diet
Attracts pollinators like bees and butterflies.
How common
Common
Best time to see a Bull Thistle
The best time to see a Bull Thistle is May–August, when about 62% of U.S. sightings happen, based on 54,128 research-grade iNaturalist observations.
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5,300+species
63national parks
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