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Yellow Starthistle (YST) Mapping Project
Yellow starthistle (Centaurea solstitialis) is estimated by the California Department
of Food and Agriculture to cover over 12 million acres in California. It is toxic to horses and is avoided by most grazers once it has bolted and become spiny. It is a serious nuisance on recreational lands and degrades the resale value of private property. It increases fire danger and poses a major threat to biodiversity in native ecosystems.
The Yellow Starthistle (YST) Mapping and Assessment Project is a long-term inter-agency/organization effort aimed at measuring the eastward and upward movement of YST in west Sierra Nevada watersheds and producing a plan to stop (or reverse) further spread.
Yellow Starthistle, YST, noxious weeds, Centaurea solstitialis
Yellow Starthistle
Centaurea solstitialis
In Work