Winterbor Kale seeds are our most frost hardy variety. Hybrid vigour really shows in this Scottish kale. Plants are very tall and extremely productive with thick, very curly, ruffled, blue-green leaves. When small, it allows for multiple pickings for salads; later, the large plant handles winter well. Sow Winterbor kale seeds in early spring for summer harvest, but sow more mid-summer for fall and winter harvest. This variety makes an excellent salad when the leaves are chopped finely and used raw. Or add the chopped leaves to soups or stir-fries.