Growing Swede and Turnips in August for Autumn and Winter Roots

Swede (rutabaga) and turnips are classic, easy-to-grow root crops that thrive with a late summer sowing. August is the ideal time to get them in the ground—these resilient roots will fill your pantry with earthy sweetness from autumn right through winter. Here’s how to make sure your swede and turnips deliver the goods!

Why Sow Swede and Turnips in August?

• Quick Maturity: Fast-growing, with some turnips ready in as little as 6–8 weeks.
• Cold Hardy: Swede and turnip roots can be left in the ground and harvested as needed—even after frosts.
• Multi-purpose: Both crops provide tasty roots and tender leaves for soups, mash, roasting, or stir-frying.
• Fills Gaps: Plant after early potatoes, onions, or peas to keep your beds productive.

Best Varieties for August Sowing

Swede:

• ‘Invitation’
• ‘Best of All’
• ‘Brora’
• ‘Helenor’ (very reliable)

Turnip:

• ‘Tokyo Cross’ (quick, small, delicious)
• ‘Purple Top Milan’
• ‘Snowball’
• ‘Golden Ball’

How to Sow Swede and Turnip in August

1. Prepare the Soil:
   • Clear weeds.
   • Add compost or well-rotted manure (avoid very fresh manure).
   • Rake bed to a fine texture.
2. Sow Direct:
   • Draw shallow drills (~1.5cm deep) spaced 25–30cm apart.
   • Sow seeds thinly and cover lightly with soil.
   • Water well.
3. Thin Seedlings:
   • When plants reach 5–7cm tall, thin to 10–15cm apart for turnips, 20–25cm for swede.
   • Use pulled thinnings as baby salad greens or stir-fry.
4. Water and Mulch:
   • Keep soil consistently moist, especially in dry spells.
   • Mulch to keep weeds down and conserve water.

Ongoing Care

• Weed as Needed: Roots struggle if crowded.
• Protect Young Plants: Netting can stop flea beetles and pigeons nibbling.
• Feed: A sprinkle of high-potash fertilizer after thinning will encourage root swelling.

Harvesting

• Turnips: Harvest small (golf-ball size) for best flavor, or leave to mature for bigger roots.
• Swede: Ready from late autumn—lift as needed, or leave in the ground and mulch for winter storage.
• Leaves: Both can be picked young for greens—treat like chard or spinach.

Kitchen Ideas

• Roast, mash, or cube in hearty stews.
• Grate raw for crunchy salads.
• Tops make nutritious greens in soups or bubble & squeak.

Swede and turnips sown in August are low-effort, high-reward crops that keep you well-fed when other veg are winding down. Don’t miss your window—get those seeds in for a sweet, robust winter harvest.

⭐ Recommended Products — Garden & Allotment Essentials for March

March is when the growing season truly begins. Seeds are being sown daily, beds are prepared and late frosts are still possible — these essentials help produce strong plants and a successful start.

Seed Trays, Modules & Propagation Kits — perfect for tomatoes, brassicas, lettuce, onions and flowers. 👉 Click here to see top options

Heated Propagators, Heat Mats & Grow Lights — improves germination and prevents leggy seedlings during cold nights. 👉 Click here to see top options

Seed & Cutting Compost — essential for healthy seedlings and strong root growth. 👉 Click here to see top options

Garden Fleece & Plant Protection Covers — protects seedlings, potatoes and early plantings from late frost. 👉 Click here to see top options

Spring Vegetable Seeds — carrots, beetroot, peas, spinach and salads can all be started now. 👉 Click here to see top options

Garden Kneeler & Seat — makes long sowing and planting sessions far more comfortable. 👉 Click here to see top options

Pressure Washer (Greenhouse & Patio Cleaning) — clean patios, paths and greenhouses before planting. 👉 Click here to see top options

Solar Garden Lights — perfect for enjoying the garden during brighter spring evenings. 👉 Click here to see top options