The chinese broccoli for use of thick long stems and crinkled dark green leaves. Quick growing, harvest just as flower heads begin to form. Excellent flavour, likes rich moist soil. 60-70 days.
Brassica oleracea var. italica
Used by Romans and called "cabbage flower" and in England as "Italian Asparagus" from early 1700's. High vitamin C and protein. Likes soil rich and well watered. Sow anytime to ensure harvest during cooler months, doesn't do best in hot weather. Frost hardy. 175-300 seeds per gram