These uniform, compact plants are the best kale choice for harvesting all in one go at 30-45cm (12-18") tall. The dark blue-green leaves are very tasty, and appealingly curled, with short internodes - meaning they’re packed more tightly on the stem than other types. Sow Starbor kale seeds for your small farm and use mechanical harvesting, or sow them for your raised allotment bed and enjoy a huge crop of nutritious super-food. Starbor kale seeds do not need warm soil to germinate, so they can be started outdoors as early as March here on the coast. In colder climes it is sensible to start some indoors for transplanting when the warm weather arrives.