Symphytum tuberosum
tuberous comfrey
Clump-forming perennial, to 60cm tall and wide, spreading by rhizomes, with coarse, hairy, deeply-veined, dark green leaves and hairy stems. Small clusters of pale creamy-yellow, pendent flowers are borne in early summer
Size
Ultimate height
0.5–1 metresTime to ultimate height
2–5 yearsUltimate spread
0.5–1 metresGrowing conditions
Moisture
Moist but well–drained, Poorly–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Cream Yellow | Green | ||
|---|---|---|---|---|
| Summer | Cream Yellow | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H7Botanical details
- Family
- Boraginaceae
- Native to the UK
- Yes
- Foliage
- Deciduous
- Habit
- Clump forming
- Potentially harmful
- Harmful if eaten repeatedly. Wear gloves and other protective equipment when handling
- Genus
Symphytum are rhizomatous herbaceous perennials, sometimes invasive, with large leaves and nodding clusters of tubular flowers
- Name status
Correct
- Plant range
- Europe, N Africa, SW Asia
How to grow
Cultivation
Grow in moderately fertile, moist soil in sun or partial shade. Be aware the plant growth can be vigorous once established and has the potential to become a nuisance, so will require appropriate management
Propagation
Propagate by division of fleshy roots in spring or from root cuttings in early winter
Suggested planting locations and garden types
- Cottage and informal garden
- Wildlife gardens
- Flower borders and beds
- Ground cover
Pruning
Cut back after flowering to encourage neat, young foliage
Pests
Generally pest-free
Diseases
Generally disease-free
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.