Suttons Seeds Kale Oldenbor F1 offers robust, deeply-curled leaves packed with nutrition and winter hardiness. This F1 hybrid variety produces abundant harvests of tender, flavorful foliage that sweetens after frost exposure. Oldenbor F1 stands up to harsh weather, pests, and disease while maintaining excellent leaf quality throughout the season. Perfect for fresh use, cooking, or juicing, this kale delivers consistent performance in Canadian gardens. Sow in spring or summer for reliable autumn and winter crops that provide fresh greens when other vegetables are scarce.