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Penstemon confertus

Family: plantaginaceae
Common name(s): yellow penstemon
Hardiness ratings: USDA zone 4

General resources

• Wikipedia. Online encyclopedia entry (if defined).
• Google images. Web search for photographs.
• GRIN. Taxonomical details, with common names, distribution, and synonyms.
• The Plant List. Taxonomical lookup
• Dave's Garden. Search the extensive PlantFiles database.

Links for Penstemon confertus

• All Things Plants - Community-assembled plant profile (1 photo)
• American Penstemon Society - Detailed description of the species' botanical characteristics, habitat, and native range. (1 photo)
• 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. (1 photo)
• NARGS Image Gallery - Photograph(s) contributed by North American Rock Garden Society members. (1 photo)
• Ontario Rock Garden Society - Germination information
• Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (zone 4) (2 photos)
• Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.
• Wild Ginger Farm - One of the plants featured on this specialty nursery's catalog page, with photo and brief description. (1 photo)

Penstemon confertus var. caeruleopurpureus

Is a synonym for Penstemon procerus var. procerus