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Hymenoxys grandiflora

Family: asteraceae
Common name(s): Old Man of the Mountain
Synonym(s): Rydbergia grandiflora
Hardiness ratings: USDA zone 3~4 - 5~9

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 Hymenoxys grandiflora

• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 3b-5)
• Denver Botanic Gardens - Description, native range, and cultural requirements. (zone 4) (8 photos)
• Garden.org - Community-assembled plant profile (2 photos)
• Heritage Perennials - Profile with description and horticultural details. (zone 3-9) (1 photo)
• NARGS Image Gallery - Photograph(s) contributed by North American Rock Garden Society members. (1 photo)
• Ontario Rock Garden Society - Germination information
• Southwest Colorado Wildflowers - Photos and botanical information about the species/genus. (4 photos)