42 days. Kohlrabi lovers, rejoice! This AAS winner features improved, smoother skin and a beautiful, vibrant purple color that continues through the leaf margins. A fantastic choice for both spring and fall growing, Konstance is long lasting and resists cracking. The bulbs are sweet and crisp with peppery undertones, while the leaves are also delicious when roasted, sautéed, or eaten raw when young and tender. Plants hold well in the garden, providing a longer harvest window.