Waltham Broccoli can start growing in an indoor garden or directly outdoors. Start 8 weeks before planting outside, seedlings should emerge within 10-21 days. Be sure to provide ample sunlight and keep the soil evenly moist. Broccoli has reached full maturity when it has produced a head approximately 4-6” wide, This will take between 7-8 weeks. Enjoy fresh or steamed! Blanch then freeze for an easy way to preserve your Waltham Broccoli!