Plant at least 12 inches apart for large heads.  The more space the larger the head.  You may tie the leaves with rope or rubber bands to keep the tops from changing colors.

Like broccoli but needs more TLC. Do not allow to get pot-bound; avoid interruptions in growth. Cauliflower heads will “button” under stress. Most varieties can’t stand the heat and are not suitable for summer production. When heads first appear, bend leaves over curd to prevent discoloring.