Common name(s): Royal Penstemon
Hardiness ratings: USDA zone 3~5 - 7~10
Links for Penstemon speciosus
- All Things Plants - Community-assembled plant profile (2 photos)
- American Penstemon Society - Detailed description of the species' botanical characteristics, habitat, and native range. (1 photo)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 3-7) (2 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation.
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 5-10) (4 photos)
- Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.
- NARGS Image Gallery - Photograph(s) contributed by North American Rock Garden Society members. (1 photo)