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Family: plantaginaceae
Common name(s): Desert Surprise
Hardiness ratings: USDA zone 6 - 10 
General resources
Links for Penstemon thurberi
- 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.
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (6 photos)
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 6-10) (2 photos)
- Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (zone 6-10)
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