University/Academic
Spotted knapweed - Invasive Plant Species of Alaska (PDF | 148 KB)
University of Alaska - Anchorage. Alaska Natural Heritage Program.
Identification/Description; Photographs; Impacts; Habitat; Controls
Diffuse and Spotted Knapweed
Colorado State University. Cooperative Extension.
Identification/Description; Illustrations; Impacts; Life Cycle; Habitat; Distribution; Dispersion; Controls
Centaurea biebersteineii (Spotted knapweed) - Invasive Plant Atlas of New England (IPANE)
University of Connecticut. Ecology and Evolutionary Biology.
Taxonomy; Identification/Description; Photographs; Introduction History; Distribution; Dispersion; Controls
Spotted
Knapweed -
Invasive Plant Atlas of the United States
University of Georgia. Center for Invasive
Species and Ecosystem Health.
Taxonomy; Identification/Description;
Photographs; Introduction History; Distribution
Centaurea maculosa (Spotted Knapweed)
University of Massachusetts - Boston. Biology Department. Conservation New England.
Identification/Description; Photograph; Introduction History; Life Cycle; Distribution; Dispersion; Special Note: Animation of the spread of Spotted Knapweed across Massachusetts over time
Spotted
and Diffuse Knapweed - Noxious Weeds of Nebraska
University of Nebraska - Lincoln. Cooperative
Extension.
Identification/Description; Photographs; Introduction History; Life Cycle; Distribution;
Dispersion; Controls
Spotted Knapweed Wanted Poster--Dead, Not Alive! (PDF | 163 KB)
University of Nevada - Reno. Cooperative Extension.
Identification/Description; Photographs
Spotted Knapweed - Introduced Species Summary Project
Columbia University. Center for Environmental Research and Conservation.
Taxonomy; Identification/Description; Photographs; Introduction History; Impacts; Life Cycle; Habitat; Controls
Know
Your Knapweeds and Spotted Knapweed
North Dakota State University. Extension Service.
Identification/Description; Photographs; Introduction History; Distribution; Controls
Spotted Knapweed - Ohio Perennial & Biennial Weed Guide
Ohio State University. Ohio Agricultural Research and Development Center.
Identification/Description; Photographs; Introduction History
Spotted Knapweed - Invasive Plant Fact Sheets (PDF | 151 KB)
University of Pennsylvania. Morris Arboretum; Delaware River Invasive Plant Partnership.
Identification/Description; Photographs; Illustrations; Introduction History; Impacts; Habitat; Distribution; Dispersion; Controls |