The lemon plant (lat.Citrus limon) is a species of the genus Citrus of the Rute family. The homeland of lemon is China, India and the tropical Pacific islands. Most likely, the lemon tree is a naturally occurring hybrid plant that developed as a separate species of the Citrus genus and was introduced into cultivation in India and Pakistan in the 12th century, and then spread throughout North Africa, the Middle East and southern Europe. Today, lemon is widely cultivated in countries with subtropical climates - the annual harvest of its fruits is approximately 14 million tons. Among the leaders in the cultivation of lemons are countries such as India, Mexico, Italy and the United States.