1、 There are several

There are 28 kinds of lavender in the world, and there are only two kinds in China. Its flowering period is generally from June to August. Its flowers are rich in color, including purple, blue, white and pink. In addition to its high ornamental value, it can also be used to extract spices, so it is also a good cash crop

2、 Common species

1. Lavender: this variety is the most common, native to the Mediterranean coast and cultivated all over Europe. Its adult plants can endure high temperature of 40 ℃ and low temperature of - 21 ℃. There is little demand for water in the growth process, but it is inseparable from sufficient light. Generally, it should be planted in the sunny place with deep soil layer, and topdressing should be appropriate during the growth period

2. Wide leaf Lavender: this variety is native to southern Europe and is also cultivated in China, but it is very rare. It is generally planted in loose and fertile neutral soil, and can also be planted in alkaline soil. There is no need to water more, and there is little demand for fertilizer. After it blooms, it needs to be trimmed from the first section under the flower and the plant is trimmed into a hemispherical shape

3. Pinnate Lavender: the leaves of this variety are double pinnate deep lobed leaves, which are usually opposite and have a certain aroma. Its flowers are dark purple and have no fragrance, but they will open all year round and only sleep when it is overheated in summer. It is native to the Canary Islands. It needs sufficient light at ordinary times and proper shade only in summer

4. Lavender with toothed leaves: this variety is an ornamental plant. It is generally raised in the courtyard. It has general cold resistance and good heat resistance. Its flowers are light purple and have a fragrant smell. In addition, it can also be put in a sachet, which can drive away mosquitoes, and the extracted essential oil can relieve nerves