Perennial: This early flowering plant is a prolific bloomer and has large 1" flowers with a semi-trailing habit. They are self-cleaning so they stay neat & tidy all season. Great in hanging baskets & containers, or as a small ground cover. Attracts butterflies & hummingbirds. Heat tolerant. Blooms: spring-first frost. Bloom color: dark purple blue. Height: 6-12 inches. Width: 10-15 inches. Exposure: sun. Water: moderate. USDA Z9.