Sowing and transplanting: Cauliflower requires slow, steady growth in cool weather. Hot weather will cause cauliflower to bolt or button up (cold weather will also cause cauliflower to button—not form full-sized heads).
Cauliflower - Snowball 1 - is an annual heirloom variety. A long-established favourite with tight heads that truly are snow white in colour and have excellent keeping qualities. (Brassica oleracea L.var.botrytis L.).