Winterkeeper Lutz beet seeds are also known as Lutz Green Leaf.?The unusually large, round roots remain sweet and tender up to 15cm (6?) in diameter. The vigorous green tops are useful for bunching in the summer. For winter storage, sow mid-July in rich soil. In fall, cover the bed to prevent freezing. This variety makes particularly tasty micro-greens and baby leaf greens that work well in salad mixes. Its best feature, though, is the cold tolerance and suitability as winter storage beets.