Spotted knapweed (Centaurea stoebe) is a biennial or short-lived perennial native to Eastern Europe. It was introduced into ...

“Spotted knapweed has attractive pink flowers ... and the larvae eat developing seeds. The larvae of the root weevil feed and develop in knapweed roots, weakening or killing the plants.

Seeds are a problem that can be handled only ... Regular mowing helps reduce its food reserves and seeding. Spotted knapweed (Centaurea maculosa) has a penchant for settling in sandy, dry, or ...