Tuberous comfrey
3
9
5Will it grow where I live?
Tuberous comfrey is hardy to zone 5 – that covers all of Central Europe and the British Isles, and every USDA zone from 5 upwards.
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Profile
- Family
- Boraginaceae
- Habit
- perennial
- Height
- 0.6 m
- Spread
- 1.8 m
- Growth
- very fast
- Lifespan
- 15 years
- First yield
- after 2 years
- Hardiness
- zone 5–7
- Shade tolerance
- partial shade
- Soil
- Sand, Silt, Loam
- Soil moisture
- moist – very wet
- pH
- 6 – 7.5
Uses
Frequently asked questions
Tuberous comfrey: how big does it get?
Tuberous comfrey (Symphytum tuberosum) grows as a perennial and reaches roughly 0.6 m in height when mature, with a spread of about 1.8 m. Growth is very fast.
Tuberous comfrey: what site does it need?
Tuberous comfrey tolerates partial shade. Suitable soils are Sand, Silt, Loam. Soil moisture should be in the range moist – very wet. The pH may lie between 6 and 7.5.
Tuberous comfrey: is it hardy?
Tuberous comfrey is listed as hardy in zone 5–7 and survives normal winters outdoors there.
Tuberous comfrey: will it grow in Central Europe?
Tuberous comfrey is hardy to zone 5 – that covers all of Central Europe and the British Isles, and every USDA zone from 5 upwards.
Tuberous comfrey: is it poisonous?
No toxicity is recorded for Tuberous comfrey. With wild plants, never rely on a database alone — only on a confident identification.
Tuberous comfrey: what is it used for?
Rated on a scale up to 10: Edible 3/10, Medicinal 9/10, Other uses 5/10.
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