Perfect variety for planting out in September under a cloche or in a cold greenhouse. It will reliably provide tasty and delicious hearts during winter. Produces large, tight hearts perfect for salads and sandwiches.Autumn sowings should be grown under cloches or in a cold greenhouse for overwintering. Sow seeds thinly at a depth of 13mm (½in) in drills 30cm (12in) apart in soil which has been raked to a fine tilth. Make regular sowings for a constant supply. Can also be started off in modules or seed trays.When large enough to handle, thin out seedlings to 30cm (12in) apart and cover with a protective netting or fleece to prevent attack from birds and insects.