Lacinato Kale 60 days. Dinosaur kale. Italian heirloom, rather primitive open kale with blue-green strap leaves that are 3 inches wide by 10 to 18 inches long. The leaves of this extremely winter-hardy variety become sweeter after a hard frost or harvest leaves when young and tender. Delicious and tender when stir-fried or steamed. Season: Annual USDA Zones: 4 - 9 Bloom Season: Fall and winter Environment: Full sun