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Penstemon cardwellii

Family: plantaginaceae
Common name(s): Cardwell's penstemon
Hardiness ratings: USDA zone 5~6 - 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 cardwellii

• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 5-9) (2 photos)
• Garden.org - Community-assembled plant profile (4 photos)
• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation.
• NARGS Image Gallery - Photograph(s) contributed by North American Rock Garden Society members. (1 photo)
• NARGS: Penstemon cardwellii 'Roseus' - Plant of the month portrait, with description and information about cultivation and propagation. (1 photo)
• Ontario Rock Garden Society - Germination information (use search on page to find this taxon)
• Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (zone 6)
• Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.
• Washington Native Plant Society - Photo and brief description. (6 photos)