(Brassica oleracea) Cauliflower is a cabbage relative that is grown for succulent flower heads or buds. Rich soil, abundant moisture, and cool weather (but avoid prolonged exposure to temps below 50 degrees) is essential for a good cauliflower crop. Cauliflower succeeds best where spring or autumn weather is uniformly cool. Some varieties are blanched (the large outer leaves drawn up and tied to shade the developing bud) to produce a milder flavored curd. Ideal germination temperature is 70 F but seeds will germinate in cooler temps. Seeds germinate in 7-14 days. Sow seeds 1/4-1/2 inch deep. Sow seeds indoors 6-8 weeks before last frost. For multiple successions, sow once a month until July, or grow varieties that mature at different times. In milder climates cauliflower can be sown in late June/early July, and be transplanted in August. With at least 4-6 sets of leaves, cauliflower can overwinter in a mild climate and set heads in early spring.