Diffuse Knapweed - Montana Field Guide
Centaurea diffusa - Wikipedia
Centaurea diffusa - KnowYourWeeds
Centaurea diffusa Profile – California Invasive Plant Council
diffuse knapweed (Centaurea diffusa)
Diffuse knapweed identification and control: Centaurea diffusa - King County, Washington
Centaurea diffusa Profile – California Invasive Plant Council
OregonFlora Centaurea diffusa
Centaurea diffusa) - EcoRegistros
File:Centaurea diffusa sl32.jpg - Wikimedia Commons
Diffuse knapweed - Invasive Species Council of British Columbia
Plantwise Knowledge Bank
Diffuse Knapweed - Montana Field Guide
Centaurea diffusa - KnowYourWeeds
Centaurea diffusa - Burke Herbarium Image Collection
Diffuse knapweed identification and control: Centaurea diffusa - King County, Washington
Washington State Noxious Weed Control Board
Centaurea diffusa Calflora
Centaurea diffusa
Centaurea diffusa - KnowYourWeeds
Species information
Centaurea diffusa - Wikipedia
Centaurea diffusa (white knapweed): Go Botany
