Growing Cabbage on an Allotment

Cabbage is a hardy, productive brassica that can be grown almost year-round by choosing the right varieties. From compact spring greens to solid winter heads, success comes from firm planting, generous spacing, steady feeding, and early pest protection.

This guide covers how to grow different cabbage types from seed and plug plants, when to plant, spacing, watering and feeding, pests and diseases, container vs ground growing, and proven ways to improve yields.

🌱 1. Types of Cabbage (Choose by Season)

🥬 Spring Cabbage (Pointed / Loose-headed)

• Sown late summer, overwintered

• Harvest: March–May

• Sweet, tender leaves

🥬 Summer Cabbage

• Sown spring

• Harvest: June–August

• Medium heads, fast growing

🥬 Autumn Cabbage

• Sown spring

• Harvest: September–October

• Larger, firmer heads

🥬 Winter Cabbage (Savoy, January King)

• Sown spring–early summer

• Harvest: November–February

• Very hardy, improved flavour after frost

(Growing methods are similar; timings and spacing vary.)

🌰 2. Ways to Grow Cabbage

From Seed (Most Common)

Pros

• Cheapest option

• Huge variety choice

• Strong root systems

Cons

• Needs thinning and early pest protection

Plug Plants

Young cabbage plants grown in modules.

Pros

• Faster establishment

• Less early pest damage

• Ideal for beginners

Cons

• More expensive

• Fewer varieties

👉 Both methods work well — firm planting and pest protection matter most.

🗓️ 3. When to Sow & Plant Cabbage

From Seed

• Spring cabbage: July–August (for overwintering)

• Summer/autumn cabbage: March–April

• Winter cabbage: April–May

Plug Plants

• Plant out: April–August (depending on type)

Stagger sowings to avoid gluts.

🌾 4. How to Grow Cabbage in the Ground

Soil & Position

• Firm, fertile soil

• Open, sunny site

• Organic matter added the previous season

Avoid freshly manured soil — it encourages soft growth and splitting.

Spacing (Critical)

• Spring cabbage: 30–40cm

• Summer cabbage: 40–45cm

• Autumn/winter cabbage: 45–60cm

Crowding causes:

• small heads

• increased disease

• poor airflow

Firm Planting (Very Important)

• Plant deeply

• Firm soil well around roots

• Heel in again if soil loosens

Firm soil = tight, solid hearts.

🪴 5. Growing Cabbage in Containers

Cabbage can be grown in containers, especially compact varieties.

Container Guidelines

• Minimum size: 30–40 litres per plant

• One plant per pot

• Heavy container to prevent tipping

Container-grown cabbages:

• need more frequent watering

• benefit from regular feeding

• stay smaller than ground-grown plants

💧 6. Watering Cabbage

Cabbages need consistent moisture, especially while hearts form.

Best Practice

• Water deeply in dry spells

• Focus on head-forming stage

• Mulch to retain moisture

Dry stress causes:

• splitting

• poor hearting

• bitter leaves

🌿 7. Feeding Cabbage

Cabbage is a heavy feeder.

Feeding Schedule

• Compost before planting

• High-nitrogen feed once established

• Optional second feed during heart formation

Well-fed plants produce dense, heavy heads.

🐛 8. Common Pests & Diseases

Cabbage White Caterpillars

• Holes in leaves

Control

• Fine mesh netting

• Regular checking

Aphids

• Clusters on new growth

Remove by hand or wash off early.

Clubroot (Soil Disease)

Symptoms

• Wilting plants

• Swollen, distorted roots

Prevention

• Long crop rotation

• Improve drainage

• Lime acidic soils

Slugs & Snails

• Damage young plants

Protect seedlings early.

✂️ 9. Harvesting Cabbage

How to Harvest

• Cut head at base when firm

• Leave stump — some varieties produce side shoots

Harvest promptly to prevent splitting.

🌾 10. Improving Cabbage Yields

• Choose the right variety for the season

• Space generously

• Keep soil firm

• Feed regularly

• Net plants early

Cabbage rewards structure and consistency.

⚡ Quick Cabbage Growing Tips

• Net plants from day one

• Firm soil matters more than depth

• Water heavily in dry weather

• Rotate crops to prevent disease

🧠 Key Cabbage Principles

• Firm planting is essential

• Spacing improves head size

• Water consistency prevents splitting

• Variety choice extends the season

Photo by Rakitha Perera on Unsplash