Symphytum x uplandicum (Russian comfrey)

Cultivation

Best in moist, moderately fertile soil in sun. Tolerates partial shade. Site carefully as tends to spread aggressively by creeping rhizomes. If growing for plant food, mulch with well-rotted manure in spring and, in summer, compost the leaves or steep in water until decayed. Dilute the liquid 1:20 prior to use.

Suggested uses

Ground Cover, Beds and borders, Cottage/Informal, Wildlife

UK hardiness

H7

USDA zones

Zone 4, Zone 5, Zone 6, Zone 7, Zone 8, Zone 9

Sunset zone

4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 1, 2, 3

WUCOLS

North-Central Coastal = Moderate/Medium
Central Valley = Unknown
South Coastal = Moderate/Medium
South Inland = Moderate/Medium
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Erect, Clump-forming

Native to

Garden origin

Drought tolerant

No

Flood tolerant

No

Toxicity

If ingested, severe discomfort may result.