That depends on where you live. Broccoli rabe likes cool soil and will bolt or go to seed in warm weather. It should be planted very early in the spring in most climates, but up north in Alaska great broccoli is grown from a summer planting. You can grow from starter plants or from seeds started indoors in late winter. Once the plants are in the ground keep the soil cool with an organic mulch. Keep growing, Marianne Binetti