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Extend Aconitum season in your garden -- and bring these hooded blooms onto your patio, porch, and other partly shaded spots! -- with this extremely heavy-blooming, compact new variety. 'Blue Lagoon' flowers profusely in midsummer, then continues for the rest of the season, adding several weeks of hard-to-find blue to your garden display. Bred for container growth, it sets its buds much lower on the stems than older varieties, giving you more flowers and less foliage in a compact space.

Also known as Monkshood (for the shape of its blooms) and Wolfsbane (for its poisonous quality), Aconitum is one of the best sources of pure blue for the shade garden. It normally reaches 3 feet high, but 'Blue Lagoon' tops out at a mere 10 to 12 inches and is not quite as wide. You can add it to mixed containers or fill solitary flowerpots with the bright green foliage and very, very abundant blooms of this vigorous, pest- and disease-resistant perennial.

Best of all is its extended bloom season. Late summer can be a dreary time in the garden, as the summer-blooming perennials fade and the fall color is not yet present. Let 'Blue Lagoon' fill that gap brilliantly! Zones 4-8.