Melissa officinalis, commonly known as Lemon Balm, is a perennial herb belonging to the mint family (Lamiaceae). It is usually native to Europe, North Africa and Western Asia, but is now cultivated in many parts of the world. The Lemon Balm plant is known for its light lemon scent and flavour and is often used in herbal teas, essential oils and aromatherapy products. The leaves of Lemon Balm are oval shaped, green in colour and slightly toothed on the edges. The leaves contain essential oils with a lemon odour. Small, white or pale pink flowers bloom in summer. The flowers usually rise from between the leaves and are intensely fragrant. The stems of lemon balm are hairy and square in cross-section. The stems usually grow upright and the plant can reach a height of 30-80 cm. Lemon Balm grows best in well-drained soils in sunny or partially shaded areas. It prefers temperate climates and is resistant to frosts in winter.