Planting Autumn & Winter Cabbage in August for Cold Season Harvests
August is the key time to plant or transplant autumn and winter cabbages, ensuring you’ll have crisp, robust heads for hearty meals in the colder months when fresh garden produce is scarce. Give your cabbages a strong start now, and they’ll reward you with nutritious greens, coleslaw, and stir-fry bases long after summer has faded. Here’s everything you need to know.
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🌱 Compost & Soil Improvers
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🌿 Autumn Plant Feed & Fertiliser
Prepare your soil for autumn planting with suitable fertilisers and soil nutrients.
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🥬 Seed Trays & Propagation Kits
Keep growing through autumn by starting suitable hardy crops under cover.
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Why Plant Autumn & Winter Cabbage in August?
- Establishment before cold: Warm soil promotes root growth so plants withstand harsh weather and mature on time.
- Earlier harvest: Some varieties will mature in late autumn (Oct/Nov), while others overwinter for crunch in the new year.
- Long-term food: Properly selected and cared-for winter cabbages can keep in the ground (or a cool store) for months.
Best Varieties for August Sowing/Planting
- ‘Tundra’
- ‘January King’
- ‘Savoy King’
- ‘Wintergreen’
- ‘Marabel’
- ‘Kilaton’ (for clubroot resistance)
How to Plant Autumn & Winter Cabbage in August
- Seedlings or Seeds:
Start with sturdy seedlings grown in a seedbed or modules, or (in milder areas), direct sow into final positions. - Prepare the Bed:
- Remove weeds/crop debris.
- Mix in plenty of compost or well-rotted manure for fertility.
- Firm the soil—cabbages love stable, compact ground.
- Space Out:
Plant 30–45cm apart both ways for full heads (closer for smaller greens). - Plant Deep:
Set each seedling so lower leaves are just above the soil, then firm in with your hands or heel. - Water In Well:
Especially if weather is hot or dry. - Mulch:
Apply mulch around young plants to conserve moisture and suppress weeds.
Ongoing Care
- Water Regularly: For the first 2–3 weeks as roots establish.
- Protect: Use fine mesh or netting against cabbage white butterflies, pigeons, and slugs.
- Weeding: Keep the area clear while plants are young.
- Feed: Once plants are showing robust leaves, a liquid feed every 2–3 weeks will encourage lush growth.
Dealing with Pests and Problems
- Check leaves for caterpillars or slug damage—remove by hand and re-net as needed.
- Clubroot? Grow resistant varieties and firm the soil well.
- Yellow leaves or poor growth? Boost with diluted seaweed feed.
When to Harvest
- Early autumn types: Harvest from late October onward.
- Winter keepers: Let mature fully and cut as needed through winter and into spring.
- Savoy and January King: Best flavor after a touch of frost.
Winter cabbages started in August are the classic “hungry gap” fillers—nutritious, reliable, and prized for their color and crunch when little else is available. A little planning now sets up months of healthy meals ahead!