Lavender is a plant that likes to be dry and needs less water. The annual rainfall is 600 ~ 800 mm During the period of turning green and budding, plants grow faster and need more water.

The water requirement at flowering stage is low; The amount of water should be appropriate during the fruiting period; Winter dormancy should be irrigated or covered with snow in winter. Therefore, the ideal rainfall distribution in a year is more in spring, moderate in summer and more in winter.

Lavender has a well-developed root system, and likes deep, loose, breathable fertile soil rich in silicon and calcium. Soil with strong acidity or alkalinity and plots with high viscosity, poor drainage or high groundwater level are not suitable for planting.

Extended data:

Lavender essential oil is mainly used for aromatherapy or massage. Abroad, from 65438 to 0993, the volatile oil extracted from Qin Luo, juniper, lavender, oregano and other plants was mixed in Tullamore to improve the sleep of the elderly.

In 1995, Graham also made an attempt to reduce patients' sleep disorders and let them fall asleep quickly. After two weeks of combined application with volatile oil atomization therapy, the number of patients who reported good sleep at night increased significantly, and the number of patients who needed special quiet environment at night decreased significantly. In Xinjiang, many Uighur hospitals use lavender preparation to treat neurasthenia and insomnia.