Sea Holly (common name) is adored by florists and gardeners alike for its unique and long lasting, blue, spiny flowers which add interesting color and texture to bouquets or the garden. They are produced on intensely silver-blue stems and stand high above the basal rosette of blue-green, deeply toothed, smooth textured leaves. Needs full sun and average soil moisture. Grows 6-8in. tall and 8-12in. wide. This is a very hardy plant.