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A picture of a Comfrey

Comfrey

Symphytum officinale

Also known as

Blackwort, Boneset, Healing Herb, Smeerwortel (Afr.)

Photo by woody_olive (All rights reserved)

Full Sun
Easy care
Moderate watering
Frost Hardy

6a

USDA zone

-23°C

Minimum temperature

Expected size

Height
Spread

1.5m

Max

2m

30cm

Min

Flowering

  • spring
  • summer
  • autumn
  • winter

This plant has a mild fragrance

More images

A photo of Comfrey
A photo of Comfrey
A photo of Comfrey
A photo of Comfrey
A photo of Comfrey

Overview

Symphytum officinale is often known as Comfrey or Common Comfrey, amongst other names. It is a vigorous perennial, forming clumps with pendant, tubular flowers. Flowers may be purple-violet, pink, or creamy-yellow in colour. Comfrey makes an excellent choice for shady borders or woodland gardens, but roots and leaves may cause discomfort if ingested, and the foliage may also irritate the skin. This plant may also be used for medicinal purposes, for liquid plant food, or manure.

Harvesting

Leaves ready for harvest when about 60 cm long. Leaves are covered in fine hairs, take care to wear gloves. Using a sickle or scythe, cut the leaves about 5 cm above the base of the plant. foliage is at its best if cut before blooming time.

Propagation

Seed

Plant seeds in spring or fall, or sow inside during very cold winter. Transplant seedlings with a spacing of half a meter to a meter.

Cuttings

Division

Uses

Medicinal

Contains a small organic molecule allantoin, which is thought to stimulate cell growth and repair and suppress inflammation.

Compost Activator

Fertiliser

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