Giant sea kale. Forms a large mound of rough, slightly crinkly leaves and eventually sends up a mass of flower stems creating a giant cloud of creamy-white flowers in late spring. A real show stopper when in flower, but watch out for the white butterflies as they like to lay their eggs on this brassica relative. Winter dormant, prefers a full sun with well-drained but fertile soil. Can grow to 1.8m tall and 1m wide in flower. 1 litre pot.