Botanical name: Dracocephalum ruyschianum ‘Blue Moon’
Common name: “Dragon’s Head”
Size: 1.5-2′ x 1-1.5′
Light: Full sun/pt shade
Leafy spikes of densely-packed, hooded, electric-blue flowers rise above neat clumps of narrow-leaved foliage in the summer. Best planted in a sunny position with fertile well-drained soil.