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Penstemon cardinalis

Family: plantaginaceae
Common name(s): Cardinal Beardtongue
Hardiness ratings: USDA zone 5 - 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 Penstemon cardinalis

• Annie's Annuals (on archive.org) - Catalog page with photo, basic horticultural information, and noteworthy features. (zone 5-10) (1 photo)
• Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 5-9) (1 photo)
• Garden.org - Community-assembled plant profile (2 photos)
• Iris' Garden - Gardener in the Netherlands presents a photo of this plant, with basic horticultural information. (1 photo)
• Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (6 photos)
• Ontario Rock Garden Society - Germination information (use search on page to find this taxon)

Penstemon cardinalis subsp. cardinalis

Common name(s): cardinal beardtongue
Hardiness ratings: USDA zone 5 - 10

Links

• New Mexico Rare Plants - Resource maintained by volunteer botanists providing descriptions and photos of various plants native to the state. (6 photos)
• Rob's Plants: Penstemon cardinalis ssp. cardinalis - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (zone 5-10) (4 photos)

Penstemon cardinalis subsp. regalis

Common name(s): Guadalupe penstemon

Links

• New Mexico Rare Plants - Resource maintained by volunteer botanists providing descriptions and photos of various plants native to the state. (5 photos)