Annual or Short-lived Perennial: Heat tolerant. One of the best ornamental basils & can be used for seasoning too. Highly aromatic with upright growth habit. Attractive purple veined dark green leaves have a mild flavor & can be used to flavor pesto, sauces, salads, & meat dishes. Attracts bees, butterflies & hummingbirds. Blooms: summer. Color: dark purple. Height: 24-36 in. Width: 12-15 in. Exposure: sun. Water: moderate/moist. Less cold-sensitive than others. USDA Z9.