Kohlrabi Kohlrabi is gaining in popularity and little wonder – it’s quick-growing, relatively easy to grow and tastes great (like a very mild turnip), cooked or raw. Not to mention they are beautiful looking plants. Available as green, white or purple varieties, kohlrabi stems grow above the ground. It’s a brassica, so include it in your crop rotation. SOWING Kohlrabi will grow in most reasonably fertile soil, but grows best in a fertile soil with compost and a general fertiliser added. Try adding some a week or two before sowing/transplanting. Do not grow kohlrabi anywhere that you have grown any member of the cabbage family the previous year (cabbage, broccoli, cauliflower, Brussels sprouts, kohlrabi, collards and kale). The best way to manage all these veg is to create a crop rotation scheme prior to growing. Find out how to create your own plan here. Kohlrabi can be sown in modules at 1cm depth for later transplanting. But the easiest way to grow them is directly into the soi...