Sweetheart cabbages are becoming increasingly popular in supermarkets during late summer through to winter. Now you can grow your own! Cabbage Caramba has tender, sweet pointed mid-green hearts, ideal shredded raw in salads and coleslaws or delicious as a steamed vegetable.Sow seeds March to June. Sow seeds thinly into well raked soil, 1cm (½ inch) deep in drills 23cm (9 inches) apart.Transplant to 38cm (15 inches) apart each way when large enough to handle, about 5 weeks from sowing. Prefers a moist, rich, well-drained soil.