When to plant Comfrey in Durham

Symphytum officinale

Comfrey
Comfrey · Symphytum officinale

A hardy perennial for a permanent UK garden bed. It grows best in moist, fertile soil and is usually planted from crowns or bare roots in spring, then cut back for feed a few times each year once established.

100 cm · Partial Shade · Moderate Water

Calibrated to Durham · last frost ≈ 10 May

Plant out April to June, harvest May to September. Frost risk October to May.
ActivityJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Plant outNoNoNoYesYesYesNoNoNoNoNoNo
HarvestNoNoNoNoYesYesYesYesYesNoNoNo

Growing guide

What to do through the growing season

  1. 01

    Prepare the Bed

    10 Apr to 24 May

    Clear the site of perennial weeds and dig in plenty of well-rotted compost or manure before planting. Work the soil to a fine tilth and leave it settled for 10th April - 24th May so the bed is ready for a long-term planting.

  2. 02

    Plant Crowns

    26 Apr to 7 Jun

    Plant dormant crowns or bare roots once the ground is workable, setting them at depth. Space them apart, then water in well straight after planting.

  3. 03

    Keep Weed Free

    26 Apr to 5 Oct Dates as each sowing reaches this stage

    Keep the bed clear of weeds and water during dry spells through 26th April - 5th October while the roots settle in. Do not cut back live growth in the first year; let the foliage build the root crown for future harvests.

  4. 04

    Top-Dress

    26 Apr to 10 May Optional · repeat every 365 days

    Top-dress the crown area with compost or a balanced organic feed as new growth starts. Repeat once a year from 26th April for steady leafy growth and better cutting the following season.

  5. 05

    Harvest Leaves

    17 May to 27 Sept 2028 Dates as each sowing reaches this stage

    Cut young leaves and stems for feed from 17th May 2028 once the plant is established. Take only a few cuts over 17th May - 27th September 2028, then stop so the plant can rebuild its crown for next year.

  6. 06

    Cut Back

    2 Oct to 30 Oct

    After the first frosts, cut the dying foliage down to ground level and clear away debris from 2nd October - 30th October. This helps keep the planting tidy and reduces places where pests can overwinter.

Companion plants

Tap a plant to see why it works (or doesn't) with Comfrey.

Good companions

Plants to avoid

Why companion planting matters

Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.

Suggested varieties

Popular varieties of Comfrey to consider

Bocking 14

A common sterile Russian comfrey selection, widely used in UK gardens for leaf production and as a mulch crop.

Bocking 4

A well-known comfrey selection grown for vigorous leafy growth and frequent cutting for compost or liquid feed.

Comfrey guides by town

See how Comfrey timing shifts in other towns with different frost dates.