Common names:Comfrey, Bone knit, Knit bone
Form:Perennial herbaceous plant, growing 3' to 5' tall
Deep tap root
Growing:Comfrey is easily propagated through root cuttings. People who try to eliminate comfrey by tilling end up with a field of comfrey, it is best eliminated by smothering. Gophers and squirrels like to harvest and bury pieces of root, spreading the herb.
Thrives in full sun, tolerates partial shade.
USDA Hardiness Zone 4-9
Permaculture uses:Medicinal herb, applied topically or as bruised leaf or salve to treat broken bones, bruises, tissue damage.
Dynamic accumulator; Nitrogen, Potassium, Calcium, Magnesium, Iron, Silicon [source: Gaia's Garden by Toby Hemenway]
Fermented for liquid fertilizer
Forage on limited basis
Chop and drop mulch up to 5 times a season
TC permaculture, Comfrey