vegetable
brassica family

Swede

Brassica napus

Swede is a hardy winter root vegetable with sweet, yellow flesh that's essential for traditional dishes like neeps, stews, and Cornish pasties. It takes a long time to mature — typically 5–6 months — but rewards patience with roots that stand in the ground through the coldest months, ready to harvest whenever you need them. Sow directly in late May to July; earlier sowings tend to bolt, and the roots benefit from sizing up through autumn as the soil cools. Swede is a brassica and susceptible to club root, so lime acidic soils and rotate with other brassicas. Flea beetle can damage young seedlings — protect with fleece until the plants are established. 'Marian' is the most reliable UK variety, with good disease resistance and excellent flavour. Harvest from October onwards; a good frost improves the sweetness. Roots store well in the ground or in boxes of damp sand.

Plan where to grow Swede using our vegetable garden planner.

SunlightFull sun
WateringModerate
Height30cm
Spacing30cm
Germination7–12 days
Sowing MethodDirect sow
Frost HardinessHardy
Sowing Depth1–2cm

When to Sow Swede

Sow swede in May, June, July.

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Sowing months

Time to Harvest Swede

Expect to harvest approximately 5 months after sowing.

Expected Yield

Each plant produces one root, typically 500g–1kg; around 4–6kg per metre of row.

Plan your swede in the allotment planner

Drag and drop plants onto your plot and get personalised sowing reminders.

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