Long prized by the fragrance industry for its essential oils, the genus Lavandula is steadily increasing in popularity among gardeners and horticulturists worldwide. This is the first full treatment of this important genus to be undertaken since 1937. It treats 40 species and their cultivars and hybrids, presenting their taxonomy, distribution, and the history of their cultivation. With several useful appendices, as well as chapters on cultivation, propagation, and pests and diseases, The Genus Lavandula is a comprehensive and authoritative account of this important genus. Exquisite paintings from the Royal Botanic Gardens, Kew, complement the text.