1 What is
1.1 Life Span
1.2 Type
1.3 Origin
Africa, South-Eastern Asia
Europe, Russia
1.4 Types
Not Available
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
1.4.1 Number of Varieties
1.5 Habitat
Subtropical forests, Tropical regions
Cold Regions, stream banks
1.6 USDA Hardiness Zone
1.7 AHS Heat Zone
1.8 Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 7, 8, 9, 10, 11, 14, 18, 19, 20, 21
21,22
1.9 Habit
Clump-Forming
Upright/Erect