(Brassica oleracea var. gongylodes). kohlrabi is a cool-season heirloom vegetable that's similar to cabbage or broccoli, but sweeter and crisper Delicious bulbs grow above ground. good cooked or raw. Kohlrabi makes a real staple crop with high yields; cold hardy. Early Purple Vienna a purple skinned, light fleshed, pre 1860 Heirloom,
