Exotic Pest Reporting
Steve Dewey, Utah State University, Bugwood.org
Yellow starthistle (Centaurea solstitialis) is an invasive plant of rangelands of the western United States. It is a native of the Mediterranean and was first detected in California in the early 1800's.
Currently, 6 biocontrol insects have been released. Research shows a 50% decrease in seed yield with biocontrol.
Summaries of State Plant Protection Laws and Regulations
09/29/2017 - Is this noxious weed on your property?
04/03/2015 - Weed of the Month: Thistle
03/24/2014 - There are Many Reasons to Hate Invasive Weeds