Perennial: Semi-evergreen. Mint family, w/bright blue-violet flowers. Popular ornamental for the perennial bed w/flower spikes summer-fall. Aromatic. Medicinal uses: tea has a soothing quality, use dried leaves. Use for colds, flu, bronchitis, sore throat, bruises, burns. The fresh leaves & flowers are used fresh as a seasoning. Attracts butterflies. Height: 1.5-2'. Width: 1-1.5'. Sun/light shade. Tolerates some drought, does best w/moderate water. USDA Z3.