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Filtering by: Date issued sim 2003-02 Subject Knapweeds -- Identification -- Oregon

Identification and control of knapweed species in central and eastern Oregon

Creator:

Detweiler, Amy Jo and Oregon State University. Extension Service

Abstract:

Four species of Centaurea are commonly found in central and eastern Oregon, including spotted knapweed (Centaurea maculosa), diffuse knapweed (Centaurea diffusa), Russian knapweed (Centaurea repens), and yellow starthistle (Centaurea solstitialis). These four species are a serious problem throughout Oregon and the Pacific Northwest. Stands of knapweed can choke out natural...

Resource Type:

Technical Report