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Spikes thick with brilliant red-violet florets ascend through strongly minty leaves in late summer and into fall. In China, its native range includes valley stream-sides, rocky mountains, and dry hillsides. Its a great new bee attractant for us, both honey and bumble! Versatile when it comes to habitat and rare! 3 – 5' T & W, shrubby perennial. Think of it like a sophisticated Buddleia.Minimum temperature: -30° F