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Family: boraginaceae
Common name(s): comfrey
Hardiness ratings: USDA zone 4~5b - 8~9 
General resources
Links for Symphytum grandiflorum
- Asianflora - Plant photos.
 (1 photo)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-9) (5 photos)
- Denver Botanic Gardens - Description, native range, and cultural requirements. (additional pages for other varieties) (zone 5) (8 photos)
- Garden.org - Community-assembled plant profile (3 varieties in database) (7 photos)
- Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 5-8) (2 photos)
- North Carolina State University factsheet - Plant profile with horticultural details and comments (zone 5b-8a) (6 photos)
- Plant Delights Nursery - Catalog page with photo, horticultural basics, and descriptive blurb. (additional pages for other varieties) (1 photo)
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