Hardiness ratings: USDA zone 4~7 - 10
- Wikipedia. Online encyclopedia entry (if defined).
- Google images. Web search for photographs.
- GRIN. Taxonomical details, with common names, distribution, and synonyms.
- The Plant List. Taxonomical lookup
Links for Codonopsis mollis
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 4-10)
- Rob's Plants - Plant profile with basic horticultural information and often personal observations. Also seed germination records. (zone 7?)