Cabbage Offenham should be sown outdoors thinly in a seedbed, 1.5cm deep directly into finely prepared soil which has already been watered.
- Seedlings usually appear in 14-21 days.
- Water well until plants are established.
- Transplant 45cm apart both ways when seedlings are about 10cm tall.
- Allow 45cm between rows.
- Plant firmly and water well.
- Sow indoors 0.5cm deep, in a tray of compost.
- Water well and place in a cold frame or unheated greenhouse.
- Keep moist.
- Transplant 5cm apart to other trays when large enough to handle.
- Gradually accustom young plants to outside conditions, avoid frosts, before planting out.
- Harvest July-August sowings as ‘greens’ in February or March, or hearted from April-May. Harvest March-May sowings as ‘greens’ from September to November.
- Average 500 seeds