When to plant Swede in Durham

Brassica napus subsp. napobrassica

Swede
Swede · Brassica napus subsp. napobrassica

A hardy root crop for the UK, swedes do best in firm, fertile soil that has been well dug and cleared of stones. Sow outdoors in late spring to early summer, thin carefully, and keep the plants covered with fine mesh to reduce cabbage root fly damage. Lift roots from autumn onwards, and leave some in the ground where the soil drains well for harvests through winter.

40 cm · Full Sun · Moderate Water

Calibrated to Durham · last frost ≈ 10 May

Sow outdoors June, harvest October to February. Frost risk October to May.
ActivityJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Sow outdoorsNoNoNoNoNoYesNoNoNoNoNoNo
HarvestYesYesNoNoNoNoNoNoNoYesYesYes

Growing guide

What to do through the growing season

  1. 01

    Prepare the Bed

    10 May to 24 May

    Dig the soil deeply and remove stones, then rake it to a fine, even finish for 10th May - 24th May. Do not add fresh manure, as it can make roots fork and split.

  2. 02

    Sow Seeds

    7 Jun to 28 Jun Optional · repeat every 3 weeks

    Sow seeds thinly in shallow drills around 7th June - 28th June, then water the row in well. Keep the soil moist while seedlings establish, and sow a second short row 21 days later if you want a longer harvest period.

  3. 03

    Protect from Pests

    7 Jun to 28 Jun

    Cover the bed with fine insect-proof mesh from 7th June straight after sowing. Seal the edges well to keep out cabbage root fly and remove the cover only for weeding or thinning.

  4. 04

    Thin Seedlings

    28 Jun to 26 Jul Dates as each sowing reaches this stage

    From 28th June - 26th July, thin seedlings gradually to the final spacing so the roots can swell properly. Water the bed first, then remove the weakest plants with a small pull rather than disturbing the rest.

  5. 05

    Water and Weed

    5 Jul to 16 Oct Dates as each sowing reaches this stage Optional · repeat every 2 weeks

    From 5th July to 16th October, keep the bed evenly moist in dry spells and hoe off weeds before they compete with the crop. Check the mesh stays tight after rain and wind, and water at the base rather than over the foliage.

  6. 06

    Harvest Roots

    15 Oct to 13 Feb 2028 Dates as each sowing reaches this stage

    Lift roots from 15th October once they are a good size, then keep harvesting through 13th February 2028. In light, free-draining soil you can leave some in the ground and take them as needed, but lift them before the roots become coarse.

Suggested varieties

Popular varieties of Swede to consider

Joan

A reliable modern swede with good-sized, round roots and steady autumn cropping.

Best of All

An old favourite with good flavour and dependable roots for the kitchen garden.

Marian

A hardy, well-fleshed variety suited to UK conditions and winter harvesting.

Swede guides by town

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