It not well adapted to hot weather. Best quality is produced where summers are cool or when it is grown into the fall or winter. Both dwarf and tall types are available with the dwarf types being preferred.
Collards are similar in nutritive value but much more tolerant of warm weather.
Blue Max, Georgia Southern, Heavi-crop, Top Bunch, Vates. Gai Lohn, Green Lance Hybrid. The flavor has been described as similar to broccoli but sweeter and less pungent or as resembling asparagus. This hybrid was developed by Sakata Seed Co. and is grown and marketed exclusively in the United States by Mann Packing Co. and Sanbon LLC of California. Nagoya Red, Nagoya White, Red Pigeon, White Pigeon.