Attractive blooms have a metallic shine. Eryngium is a hardy perennial with long, sturdy stems. Tolerates hot, sunny locations. Plants produce flowers during the second year of growth and in subsequent years. Attracts bees, beneficial flies and wasps. Also known as plains eryngo and flat sea holly. Perennial in Zones 3-8. Ht. 40-46". Avg. 15,200 seeds/oz. Packet: 25 seeds.