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Centaurea jacea

Family: asteraceae
Common name(s): Brown Knapweed
Hardiness ratings: USDA zone 6

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• The Plant List. Taxonomical lookup
• Catalogue of Life. Taxonomical lookup

Links for Centaurea jacea

• BBC Gardening: Centaurea jacea 'Jody' - Plant profile with horticultural details and garden uses. (1 photo)
• Connecticut Botanical Society - Wildflower profile. (3 photos)
• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 6) (7 photos)
• Garden.org - Community-assembled plant profile (4 photos)
• Ontario Rock Garden Society - Germination information

Centaurea jacea × nigra

Common name(s): Meadow Knapweed, Hybrid Knapweed
Hardiness ratings: USDA zone 6

Links

• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 6) (7 photos)