Perennial Herb: Evergreen. Deer resistant. A superb introduction, forming a clump of very thick, heart-shaped leaves that are silver with green edging and veining. Sprays of deep blue Forget-me-not flowers appear in spring. Heat and humidity tolerant. Great in beds, borders and containers. Good cut flower. Size: 6-12" x 24". Water: mod-moist. Exposure: part shade-shade. USDA Z4. PPAF.