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Family: plantaginaceae
Common name(s): chaparral penstemon
Hardiness ratings: USDA zone 5~8 - 9~10 
General resources
Links for Penstemon heterophyllus
- All Things Plants - Community-assembled plant profile (5 varieties in database)
 (7 photos)
- American Penstemon Society - Detailed description of the species' botanical characteristics, habitat, and native range. (1 photo)
- Annie's Annuals: Penstemon heterophyllus 'Blue Springs' - Catalog page with photo, basic horticultural information, and noteworthy features. (additional cultivars listed in catalog) (zone 6-10) (3 photos)
- BBC Gardening: Penstemon heterophyllus 'Heavenly Blue' - Plant profile with horticultural details and garden uses. (1 photo)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 7-10) (7 photos)
- Digging Dog Nursery: Penstemon heterophyllus 'Züriblau' - Catalog page with descriptive information (zone 5)
- Heritage Perennials: Penstemon heterophyllus 'True Blue' - Profile with description and horticultural details. (zone 8-9) (1 photo)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (1 photo)
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (additional pages for other varieties in catalog) (zone 7-10) (3 photos)
- Missouri Botanical Garden: Penstemon heterophyllus 'Electric Blue' - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 6-10) (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 6-10) (2 photos)
Common name(s): Foothill Penstemon
Hardiness ratings: USDA zone 7 - 10
Links
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 7-10) (4 photos)
Common name(s): Foothill Penstemon
Hardiness ratings: USDA zone 8 - 10
Links
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 8-10) (1 photo)
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