The ones with small flowers are Italian thistle (Carduus pycnocephalus); those with the larger round flower are bull thistle (Cirsium vulgare). And there is some yellow-flowering star thistle ...

Recent E.R. discussions of yellow star thistle prompt me to offer my suggestions for elimination of this troublesome invasive weed. My three-acre property on the edge of Chico has been free of ...

In today’s column, I discuss the humble star thistle, aka Yellow Starthistle, or centaurea solstitialis. I grew up around star thistle. It grew everywhere on the dryland acreage in Corning where ...

Yellow star thistle, Centaurea solstitialis, is an invasive plant that we should try to eliminate. The plant is native to Eurasia, although it is believed it was brought to California from South ...

With California Invasive Weeds Awareness Week just around the corner (July 17-23), there are three words every Californian should know: yellow star thistle. According to a new study, California is ...