Large ornamental plants with frilled edges and heart lifting colours for months. Cabbage Flowering Northern Lights Mixed is superb in containers. Recommended for charm and impact.
Leaves colour when night temperatures fall to 50F/10C.
Sow seeds in spring for summer bedding or summer (late May or early June) for late summer/autumn planting to replace summer bedding. Sow seeds 1.5mm (1/16in) deep in a good seed compost. Germination takes 14-21 days at 21C (68F).
When large enough to handle, transplant to 7.5cm (3in) pots of potting compost. Harden off spring sown plants and plant out 30-45cm (12-18in) apart in the border. Pot up summer sown plants into 13cm (5in) pots and stand out of doors on a sheet of polythene to prevent root penetration into the soil.
Water regularly and give weak doses of a high Nitrogen fertiliser every 14 days. Plant out in late summer in beds, window boxes, containers, etc.
NB: The leaf colour change occurs as the night temperature drops in late summer. In late winter they produce a tall flower spike which makes an unusual floral decoration.
Eaten raw or cooked, cabbages are an excellent source of Vitamin C. Try to use all healthy outer leaves, as the darkest green leaves contain the most nutrients.