Pest Tracker
Exotic Pest Reporting
Barry Rice, sarracenia.com, Bugwood.org |
Red (Purple) starthistle
Centaurea calcitrapa Red (Purple) starthistle (Centaurea calcitrapa) is an invasive plant. It is a native of Europe and was first detected in Washington in 1989. Centaurea species may produce allelopathic effects and are highly competitive with other plants, often displacing desired vegetation. |
Summaries of State Plant Protection Laws and Regulations