Brassica oleracea 'Cavolo Nero' is an Italian kale with dark green puckered leaves. It's ornamental enough to grow in the border where it will add winter interest – its leaves look fantastic when covered with a dusting of frost. It also doubles as a cut-and-come again vegetable, suitable for stir fries and salads.
Sow Brassica oleracea 'Cavolo Nero' in modules, and transplant 6-8 weeks later, planting them firmly together in moist but well-drained soil, in full sun to partial shade. Weed and water well until well established. Remove all flower shoots to prevent the plants from setting seed and deteriorating.