Biennial or Perennial: Tolerates deer, drought, heat & normal, sandy or clay soil. Use in borders, containers, rock gardens & as a cut flower. Compact & clump forming with tall flower spikes. Attracts butterflies & hummingbirds. Bloom time: late spring-late summer. Bloom color: snow white. Height: 15-24 inches. Spread: 10-20 inches. Exposure: sun. Water: moderate/dry. USDA Z4-9.