Life Span
Perennial
Perennial
Type
Palm or Cycad
Broadleaf Evergreen
Origin
United States, Southeastern United States
Europe, Russia
Types
Rhapidophyllum hystrix
Symphytum officinale (common comfrey), Symphytum asperum (rough comfrey)
Number of Varieties
152
0
40000
👆🏻
Habitat
Cold Regions, Subtropical climates
Cold Regions, stream banks
USDA Hardiness Zone
6-106-11
0
99
👆🏻
AHS Heat Zone
12-6
-
Sunset Zone
H1, H2, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
21,22
Habit
Clump-Forming
Upright/Erect