Agapanthus Storm Cloud is a dazzling South African hybrid boasting huge (8- to 10-inch) globes of trumpet-shaped, cobalt blue flowers atop 3- to 4-foot stems. The strap-like leaves reach 24 to 30 inches across and 18 to 24 inches long. A dramatic midsummer bloomer for the border or large containers. Plant in full sun; water and fertilize regularly throughout the summer. Zones 6-9.