Barnaby's Thistle Online

: Blooming occurs from June through October. The flower heads are topped with yellow florets and surrounded by stiff, sharp spines arranged in a star-like pattern.

: The plant typically grows between 1 and 3 feet tall, featuring gray-green to blue-green stems covered in fine, white cottony hairs. barnaby's thistle

: A single plant can produce up to 100,000 seeds , which are easily dispersed by wind, water, or clinging to animal fur and machinery. Ecological and Agricultural Impact : Blooming occurs from June through October