Perennial: Deer resistant. Good in borders, containers & as a cut flower. Attracts butterflies & hummingbirds. Wiry stems bear, loose branched spikes of single dark blue flowers. Upright, branching with deeply lobed leaves. Seldom needs staking. Blooms: early & late summer. Size: 3-4' x 2'. Exposure: sun/part shade. Water: moderate. USDA Z3.