Perennial Herb: Deer resistant. Sundiascia is a completely new form of Diascia that offers a unique, upright habit & stunning show of color. Tall stems display 3" white flower spikes boldly. More heat tolerant. Self-cleaning, best when kept slightly on the dry side. Good border, container, rock garden, and edging plant. Attracts bees & butterflies. Blooms: spring-fall. Height: 12-15 in. Width: 18-20 in. Exposure: sun. Water: moderate.