Common name(s): Palmer penstemon; balloon flower
Hardiness ratings: USDA zone 4~6 - 9~10
- 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
Links for Penstemon palmeri
- All Things Plants - Community-assembled plant profile (5 photos)
- American Penstemon Society - Detailed description of the species' botanical characteristics, habitat, and native range. (1 photo)
- Annie's Annuals - Catalog page with photo, basic horticultural information, and noteworthy features. (zone 5-10) (3 photos)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-9) (12 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (12 photos)
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 6-10) (3 photos)
- Ontario Rock Garden Society - Germination information
- Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (zone 4-9) (1 photo)
- Southwest Colorado Wildflowers - Photos and botanical information about the species/genus. (5 photos)