Perennial: Drought tolerant. Deer resistant. Forms tiny blossoms in dense, narrow spikes that are abundant. Narrow, silver-gray leaves form a 12" tall foliage mound, then in early to mid summer, the blooms arise to 24" tall. Width: 9-12". Good cut flower, container, woodland, border and rock garden plant. Attracts bees, butterflies & hummingbirds. Blooms: summer. Bloom color: deep sky blue. Exp.: sun/pt shade. Water: mod. USDA Z4.