genus CENTAUREA
yellow starthistle
Starthistle
Tuscan Buttes RedBluff Ca
CAP
Yellow starthistle is a thorny winter annual (Herbaceaus) in the centaurea, knapweed genus.
Herbaceous annual
Native to the Mediterranean
Taproot that can reach a meter deep into the soil, outreaching other plants to moisture.
Plant Allelopathy
Ability to create monotypic stands in fields that prevent other species from growing.
Toxic (sometimes fatal) to horses.
2005.SEP.28