Basic Information Brassica oleracea Basic Sowing information: Dig the soil deeply with the addition of manure or compost during the late autumn/winter some months prior to planting. Sow seed 1cm deep, thin out to 7cm apart, transplant up to 60cm apart when the plants have made 5-6 leaves. Sow Jan to Feb under glass, autumn for overwintering in cold frames. Sow outdoors March to May.
