|Fast growing, upright perennial, although usually treated as an annual. Leaves are whitish gray to medium green, shiny, lance shaped and 3" long. 'Strata' has long lasting, brilliant blue, narrow flower spikes with white bracts, up to 24" tall. Outstanding in mass plantings, borders or containers. Thrives in full sun in well drained soil. A welcomed blue addition that blends or complements just about any color in the border. Native to Texas and Mexico.