How to Grow Cabbage from Seed in South Africa

Growing great cabbage starts with choosing the right variety, planting at the right time and giving each plant enough space. Our range includes a compact red baby cabbage, four traditional heading cabbages and an upright Michihili-type Chinese cabbage. Chinese cabbage grows differently, so be sure to follow the planting and spacing advice for your chosen variety.

Baby Red Omero cabbage

Baby Red Omero is a compact red head cabbage. The current Gardening.co.za packet specifies 25 x 25 cm spacing for its baby-head outcome. A public Omero breeder page describes a lower commercial plant density and a longer growing period from planting, so this guide does not combine those figures or promise an exact weight or harvest day. Use the current packet spacing for compact heads and harvest when the head feels firm when gently squeezed.

Standard head cabbages

Cape Spitz, Copenhagen Market, Drumhead and Glory of Enkhuizen are Brassica oleracea head cabbages. Cape Spitz forms a pointed head; Copenhagen Market and Glory of Enkhuizen form round heads; Drumhead forms a broad, firm head. Their current packets specify 40 cm between plants and 60 cm between rows. South African production guidance allows wider spacing for larger heads, so keep the packet spacing for a practical home-garden baseline and widen towards 70 cm between plants or 90 cm between rows only when the cultivar, bed and desired head size justify it.

Chinese Michilli - upright Michihili-type Chinese cabbage

The product sold as Cabbage Chinese Michilli is an upright Michihili-type Chinese cabbage in the Brassica rapa Pekinensis Group, not B. oleracea head cabbage. Space plants about 30 cm apart with 45-60 cm between rows. Maintain uninterrupted growth in cool weather: heat, drought, root disturbance or a prolonged cold check followed by warmth can cause bolting or loose heads.

Seed form, light and pretreatment

Every exact product in this guide is currently sold as raw seed. Raw describes the physical seed form; it does not prove that a particular lot is untreated. The current labels specify 4 mm sowing depth and do not prescribe soaking, chilling or scarification. Sow the seed as supplied under a light layer of fine mix. No special light trigger is required while the covered seed germinates, but provide bright light and airflow as soon as seedlings emerge.

Always check the physical packet received for a lot-specific treatment warning. Do not use seed for sprouts or microgreens unless that packet explicitly confirms that the seed is untreated and suitable for food-sprouting use.

When to sow in South Africa

Use these regional month ranges as planning windows, then adjust for altitude, frost dates, coastal humidity and the current season. They come from a South African commercial sowing guide and are deliberately separated by crop type. The current packet's national “all year” or “year round” wording is not used.

Highveld

Baby and standard head cabbage: November to February, with a second July to August window. Chinese Michihili: February to March. Protect small seedlings from severe frost and avoid a cold check followed by rapid warming.

Middleveld

Baby and standard head cabbage: February to April and August to September. Chinese Michihili: February to March. In warmer districts, finish heads before sustained heat.

Lowveld

Baby and standard head cabbage: February to June. The source does not publish a general Lowveld window for Chinese cabbage, so do not invent one: trial a small sowing only through the coolest reliable local period and confirm timing with local advice.

Northern Cape and Great Karoo

Baby and standard head cabbage: November to February. Chinese Michihili: February to March. Use mulch and steady irrigation after establishment, because a drought check followed by heavy watering can split heads.

KwaZulu-Natal Midlands

Baby and standard head cabbage: August to February. Chinese Michihili: February to March. Give generous airflow and avoid wetting foliage late in the day.

Eastern Cape and Little Karoo

Baby and standard head cabbage: August to April. Chinese Michihili: February to March. Narrow the window locally where frost, heat or dry winds are severe.

Western Cape and South Coast

Baby and standard head cabbage: November to April. Chinese Michihili: February to March. Use raised, free-draining beds during persistent winter rain and protect seedlings from slugs and snails.

KwaZulu-Natal coast

Baby and standard head cabbage: February to June. The source does not publish a general coastal window for Chinese cabbage, so use only the coolest reliable local block as a small trial, with strong airflow and close pest and disease inspection.

How to sow and transplant

1. Fill clean cells or a seed tray with fine, free-draining seedling mix and moisten it before sowing.
2. Sow one raw seed per cell 4 mm deep. For direct sowing, place seeds shallowly in a prepared seedbed and thin without disturbing the retained plant.
3. Keep the seed zone evenly moist, never saturated. Aim for 15-20 °C and expect emergence in about 7-14 days. Baby Red Omero's packet does not state a temperature; this temperature is a practical species-level tray target, not an Omero packet claim.
4. Move emerged seedlings into bright light with good airflow. Thin multi-sown cells to one strong seedling.
5. Transplant when seedlings are sturdy and have several true leaves. Harden them gradually for about a week.
6. Plant into damp soil late in the day or on a cool, overcast day. Set seedlings at the same depth as in the cell, firm gently and water immediately.
7. Use the spacing for the exact module. Do not apply Baby Red or standard head-cabbage spacing to Chinese Michihili.

Ongoing care

Choose full sun and fertile, well-drained soil. South African head-cabbage guidance uses a soil pH of about 5.5-6.8 and describes cabbage as a strong feeder. Add well-finished compost before planting and base additional fertiliser on a soil assessment where possible. Avoid excessive late nitrogen, which can delay firm heading.

Keep moisture steady while leaves and heads develop. Drought checks growth; a sudden heavy watering after a dry spell can split a firm head. Mulch without burying the stem. Rotate away from cabbage, kale, broccoli, cauliflower, radish and other brassicas, preferably for several seasons.

Inspect leaf undersides for diamondback moth larvae and other caterpillars, aphids, bagrada bugs, slugs and snails. Net young plants where practical. Use only controls registered for the exact edible crop, follow the label and observe the withholding period.

Head maturity, harvest basis and kitchen outcome

The current labels print 55-65 days for Baby Red Omero, 90-110 days for Cape Spitz, 100-120 days for Copenhagen Market, Drumhead and Glory of Enkhuizen, and 80-90 days for Chinese Michilli. The labels do not define whether those counts start at sowing, emergence or transplanting, so treat them only as planning ranges. Bejo's Omero breeder sheet also uses a different maturity basis and regional ranges; do not combine those figures into a guarantee.

Harvest Baby Red Omero and standard head cabbages when the head feels firm for its type. Cut with a clean knife, keeping only sound wrapper leaves. Temperature, transplant stress, fertility, water, spacing and desired head size can move harvest earlier or later than the printed range.

Harvest Chinese Michihili when the tall upright head is full and crisp, before heat or interrupted growth starts a flower stalk. Chill soon after cutting for best texture. All six products are edible vegetable crops, but seed itself is not food unless the received packet explicitly permits sprouting use.

Troubleshooting failed germination and establishment

• No emergence: the seed zone may have dried, become waterlogged, overheated or been buried too deeply. Re-sow 4 mm deep in fresh mix and verify that the packet was stored cool and dry.
• Seedlings collapse at soil level: damping-off is favoured by dirty containers, saturated mix, poor airflow and overcrowding. Remove affected seedlings and restart cleanly.
• Pale, stretched seedlings: provide brighter light immediately after emergence and avoid warm, crowded indoor conditions.
• No firm head: likely causes include heat, the wrong spacing, low fertility, drought checks or root damage.
• Chinese cabbage bolts: heat, drought or a prolonged cold check followed by warming can initiate flowering. Use a steadier cool-season window.
• Head splits: rapid water uptake after drought or delayed harvest is common. Keep watering even and harvest promptly at firmness.
• Holes in leaves: inspect for brassica caterpillars, slugs and snails and intervene while pests are small.
• Wilting, blackened veins or recurring root swell: remove affected plants, do not compost diseased tissue, improve drainage and rotate the bed. Seek local diagnostic advice before applying a treatment.

Shop cabbage seed

• Cabbage Baby Red Omero Seeds
• Cabbage Cape Spitz Seed
• Cabbage Copenhagen Market Seeds
• Cabbage Drumhead Seeds
• Cabbage Glory Of Enkhuizen Seeds
• Cabbage Chinese Michilli Seeds