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Knautia arvensis

Family: dipsacaceae
Common name(s): blue buttons
Hardiness ratings: USDA zone 4 - 10

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 Knautia arvensis

• Connecticut Botanical Society - Wildflower profile. (1 photo)
• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-10) (10 photos)
• Denver Botanic Gardens - Description, native range, and cultural requirements. (8 photos)
• Ontario Rock Garden Society - Germination information
• Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (2 photos)

Knautia arvensis subsp. arvensis

Links

• Garden.org - Community-assembled plant profile (12 photos)
• Ontario Rock Garden Society - Germination information