
Symphytum officinale, Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 3: 92. |
Recommended Temperature Zone:
sunset: All zones
USDA: 3-10
Sun Exposure: Full sun to part shade
Origin: Eurasia
Growth Habits: Herbaceous perennial, up to 3 feet tall (90 cm); stiff hairs covering much of the plant; winged stems; large dark brown to black roots, pure white inside.
Watering Needs: Regular water
Propagation: root cuttings, seeds
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