1 What is
1.1 Life Span
1.2 Type
1.3 Origin
Northeastern United States, Mid-Atlantic United States, Southeastern United States, Central United States
Europe, Russia
1.4 Types
Ardis, Arnold, Aureomarginatum
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
1.4.1 Number of Varieties
1.5 Habitat
Bluffs, low mountains, Moist Soils, Woodlands
Cold Regions, stream banks
1.6 USDA Hardiness Zone
1.7 AHS Heat Zone
1.8 Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23
21,22
1.9 Habit