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Cirsium altissimum

Family: asteraceae
Common name(s): Tall Thistle
Hardiness ratings: USDA zone 3~4 - 9~10

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 Cirsium altissimum

• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-10) (3 photos)
• Garden.org - Community-assembled plant profile (5 photos)
• Illinois Wildflowers - Informative illustrated page with description and cultivation details, also covering range and faunal associations. (4 photos)
• Kansas Wildflowers & Grasses - Plant portrait with botanical details and description (17 photos)
• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (7 photos)
• Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (10 photos)
• North Carolina State University factsheet - Plant profile with horticultural details and comments (zone 3-9) (12 photos)

Cirsium altissimum f. moorei