Multiple long, thin stems topped with clusters of 2" heads packed with tiny flowers. Blooms July to frost. Attracts bees and butterflies. Also known as purple top verbena, tall verbena, South American vervain, and purple-top verbena. Perennial in Zones 7-10 but can be grown as an annual. Ht. 36-48". Avg. 122,000 seeds/oz. Packet: 100 seeds.