Perennial Herb: Need a true blue? This is it! Tolerates drought, deer & gophers. Nice border and container plant. Attracts butterflies and hummingbirds. Bloom time: summer-fall. Bloom color: ultramarine blue. Height: 2-3'. Width: 2'. Exposure: sun. Water: moderate. USDA Z8. Mulch in harsher climates to provide protection.