Enjoy this cold-hardy plant from spring to fall! Prolific and healthy, a must-have! Seeds can be planted 1/2 inch deep in spring and again in midsummer for a second fall harvest. Thin seedlings to 16" apart. After you harvest the main head, leave the stem and enjoy smaller heads that continue to form on side shoots! Seed information: Lifecycle: annual (vegetable) Time to maturity: about 2 1/2 months Sun requirement: sun Spacing: 16" apart Depth: 1/2 inch Packet weight: 600mg Seeds/oz: 9000 Ideal germination temperature: 55-65f Sowing method: transplant Heirloom year: 1880 heirloom