Cabbage

About Cabbage

Cabbage is a hardy biennial vegetable grown as an annual for its dense, leafy heads that form in shades of green, red, or purple. Native to the Mediterranean and cultivated in Britain since Roman times, it thrives in the UK's cool, moist climate. British gardeners prize cabbage for its reliability, versatility in the kitchen, and ability to provide fresh harvests nearly year-round with careful variety selection. From compact spring varieties to robust winter types, cabbage remains a cornerstone of the traditional British vegetable plot.

UK fact: Cabbage has been a staple of British cuisine for over 2,000 years, with archaeological evidence showing cultivation during the Iron Age, and it became particularly important during wartime 'Dig for Victory' campaigns when it provided essential nutrition through harsh winters.

Watering Cabbage

Water cabbage regularly to maintain even soil moisture, providing approximately 2.5 cm of water per week through rainfall or irrigation. During dry spells, especially in summer, increase watering frequency to prevent stress that can cause heads to split or bolt prematurely. Apply water at the base of plants in the morning to reduce disease risk, and mulch around plants to retain moisture. Irregular watering is a common cause of head splitting, so consistency is crucial, particularly during the final weeks before harvest.

Sunlight requirements

Position cabbage in an open, sunny spot that receives a minimum of six hours of direct sunlight daily. In the UK, a south-facing plot is ideal, though cabbage will tolerate light afternoon shade in southern regions during hot summers. Avoid planting in the shadow of taller crops or buildings, as insufficient light results in loose, poorly formed heads and increased susceptibility to disease.

Soil and feeding

Grow cabbage in firm, moisture-retentive soil enriched with plenty of well-rotted manure or compost dug in during autumn or winter. The soil should be neutral to slightly alkaline with a pH of 6.5–7.5; lime acid soils in winter to raise pH and help prevent clubroot disease. Unlike many vegetables, cabbage prefers firm soil, so avoid working the ground immediately before planting—instead, allow winter weather to settle it naturally or tread it down gently. Heavy clay soils suit cabbage well provided drainage is adequate, whilst lighter soils benefit from generous organic matter to improve water retention.

Apply a balanced general fertiliser at planting time, then provide additional nitrogen-rich feeds every three to four weeks during the growing season to promote vigorous leaf growth. A liquid feed such as comfrey tea or a high-nitrogen fertiliser works well, particularly for summer and autumn varieties. Avoid overfeeding late in the season as this can result in loose, poorly storing heads.

Pruning Cabbage

Cabbage requires minimal pruning, but regularly remove any yellowing, damaged, or diseased outer leaves throughout the growing season to improve air circulation and reduce hiding places for pests such as slugs and caterpillars. Once you harvest the main head, you can leave the stem and roots in place; make a shallow cross-cut in the top of the stump and it will often produce several smaller secondary heads over the following weeks. After final harvest, remove all plant material promptly to prevent the build-up of brassica pests and diseases in the soil.

Propagating Cabbage

Sow cabbage seeds in modules, pots, or a prepared outdoor seedbed depending on the variety and planting season. Spring cabbage is sown in late summer, summer varieties in early spring under cover, and autumn/winter types from mid-spring to early summer. Transplant seedlings when they're 10–15 cm tall with a well-developed root system, spacing them according to variety. Firm planting is essential—the traditional test is that you should be able to tug a leaf without lifting the plant.

Common problems

Cabbage is susceptible to several common brassica pests including cabbage white butterfly caterpillars, which can rapidly defoliate plants if not controlled with netting or organic sprays. Clubroot, a persistent soil-borne disease causing swollen, distorted roots and stunted growth, is particularly problematic in acid soils and can persist for 20 years; prevention through crop rotation, liming, and resistant varieties is essential. Pigeons cause severe damage year-round, especially in winter, making netting almost essential in most UK gardens. Other issues include aphids, cabbage root fly, slugs, and fungal diseases such as downy mildew in damp conditions—good spacing, crop rotation, and garden hygiene help minimise these problems.

Spot a problem with your plant? Photograph the affected area using the Loam app and it will suggest the most likely cause and treatment.

Safety

Humans

Safe

Cats

Safe

Dogs

Safe

Toxicity information is for general guidance only.

Seasonal care calendar

Monthly care guide for Cabbage in the UK, based on average conditions.

Frequently asked questions

How do I prevent clubroot in my cabbage patch?

Clubroot thrives in acid soil, so lime your brassica bed to maintain pH above 7.0. Practice strict crop rotation, leaving at least four years between brassica crops in the same spot. Improve drainage, raise plants in modules rather than a seedbed to give them a strong start, and choose resistant varieties such as 'Kilaton' where clubroot is known to be present.

Why are my cabbage leaves being eaten and how can I identify the pest?

Holes in cabbage leaves are typically caused by caterpillars from cabbage white butterflies (May to September) or pigeons year-round. Check the undersides of leaves for clusters of yellow eggs or small green caterpillars. Dark droppings on leaves indicate active caterpillar feeding. The Loam app can help you identify pest damage from photos and send timely reminders for preventative netting before butterfly season begins. Use fine mesh netting supported on hoops as your primary defence.

What spacing do cabbages need when planting out?

Spacing depends on variety and desired head size. Spring and compact varieties need 30-35 cm between plants, summer cabbages require 40-45 cm, whilst large winter types and Savoys need 50 cm spacing to develop fully. Allow 45-50 cm between rows for access. Plant firmly so the lowest leaves are just above soil level, and water in well. Closer spacing produces smaller heads, which can be useful for small households.

Related plants

• Broccoli
• Cauliflower
• Brussels Sprout
• Kale
• Kohlrabi