Conservancy staff hand-pull yellow starthistle. December 7, 2022 By Jackson Brooke, Restoration Manager Referred to as one of the most serious rangeland weeds in the state, yellow starthistle (Centaurea solstitialis) favors drought conditions and invades grassland, coastal prairie, and oak savanna habitats across California, opportunistically taking over heavily disturbed areas like roadsides and working lands. What makes it so invasive? [...]