Perennial: The Nesia series offer large-sized flowers in striking colors on strong, stable stems. Long bloom season. Compact and bushy with fun blooms of linaria-like flowers. Good in containers, hanging baskets and borders. Attracts butterflies. Bloom time: spring-fall. Bloom color: dark blue w/yellow center. Height: 6-12". Width: 4-8". Exposure: sun. Water: moderate. USDA Z9.