The traditional leaf kale (Couve Tronchuda) for Portuguese kale soup. This unique specialty from Portugal is also called Portuguese cabbage or sea kale. The taste and texture of the wavy green leaves are similar to collards. The thick, fleshy midribs and stems can be peeled and eaten like celery or included in the soup. Vigorous plants grow up to 2' high and 2' wide. Grow like regular kale but space plants 18–36" in order for plants to reach full size. It will tolerate only moderate frost. Best for spring or fall harvest as it tends to get tip burn in hot weather. Harden off and plant outside after nighttime temperatures are consistently above freezing. Grows well in a container or in the ground.