Perennial: Deer and rabbit resistant. Heat tolerant. Small, brilliant deep blue to purple blooms are produced on dark stems. Flowers from spring to hard frost. Prefers full sun and moist well-drained to dry soil. Loved by hummingbirds, butterflies and bees. Native to southwestern US. Height: 18-24". Width 14-16". Water: moderate. Exposure: full. USDA Z7.