Barnaby's Thistle Apr 2026

Barnaby's Thistle is considered a in many regions, including much of the western United States and Australia, due to its aggressive growth.

: 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

(scientific name Centaurea solstitialis ), more commonly known as Yellow Starthistle , is a highly invasive winter annual or biennial herb native to the Mediterranean region and Eurasia. It is widely recognized for its bright yellow flower heads protected by sharp, straw-colored spines that can reach up to two inches in length. Key Identification Features Barnaby's Thistle is considered a in many regions,