Perennial Herb: Evergreen. Deer resistant. An improved 'Jack Frost' variety. It has thick, hefty heart shaped leaves that are green with a silver overlay that will stand up well to heat and humidity. In spring loose clusters of pink buds open to dainty vivid blue flowers. Great for beds, borders or containers. Good cut flower. Size: 6-12" x 24". Water: mod-moist. Exposure: part shade-shade. USDA Z4. PPAF.