Non-native; invasive, especially in farming and ranch lands. For this ranch, it's a yearly battle to eradicate the thistle.
Location: Bealville Road (connects from Hwy 58 to Caliente-Bodfish Road), Southern Kern River Valley.
The California Invasive Plant Council (Cal-IPC) lists plants that cause serious problems in native ecosystems. Cal-IPC classifies the statewide impact of Centaurea solstitialis as high.