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Family: plantaginaceae
General resources
- Wikipedia. Online encyclopedia entry (if defined).
- Google images. Web search for photographs.
- GRIN. Taxonomical details, with common names, distribution, and synonyms.
Links for Penstemon heterophyllus
- American Penstemon Society - Detailed description of the species' botanical characteristics, habitat, and native range.
 (1 photo)
- Annie's Annuals: Penstemon heterophyllus 'Zuriblau' - Catalog page with photo, basic horticultural information, and noteworthy features. (zone 6-10) (additional cultivars listed in catalog) (1 photo)
- 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. (zones 7a-10b) (7 photos)
- Digging Dog Nursery: Penstemon heterophyllus 'Züriblau' - Catalog page with descriptive information (zone 5)
- Kemper Center: Penstemon heterophyllus 'Electric Blue' - Plantfinder page for one of the plants growing at the Missouri Botanical Garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 6 to 10) (1 photo)
- Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (2 photos)
- Rock Garden Plant Database - Encyclopedic entry with taxonomical, botanical, and horticultural details.
- Wild Ginger Farm: Penstemon heterophyllus 'Blue Springs' - One of the plants featured on this specialty nursery's catalog page, with photo and brief description. (1 photo)
Common name(s): Foothill Penstemon
Links
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 6 to 10) (3 photos)
Links
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (zone 8 to 10) (1 photo)
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