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Penstemon griffinii

Family: plantaginaceae
Hardiness ratings: USDA zone 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 Penstemon griffinii

• American Penstemon Society - Detailed description of the species' botanical characteristics, habitat, and native range.
• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 5-9)
• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation.