Fish vanilla, lingonberry (scientific name: Mentha spicata?Linn.), also known as green mint, spiced mint, Dutch mint, green peppermint, scented cauliflower, and fish vanilla.

An erect perennial herb of the family Labiatae, with erect stems and purple or white flowers, flowering from July to September. Temperature adaptation range, like moist, like light, suitable for weak acidic soil. Stems and leaves can be distilled to extract the oil, which can be used as medicine or food.

Native to southern Europe, Canary Islands, Madeira, USSR. It is cultivated or escaped into the wild in Henan, Hebei, Jiangsu, Zhejiang, Guangdong, Guangxi, Sichuan, Guizhou, Yunnan, and elsewhere in China, and in the wild in Xinjiang. The type was taken from Europe.

Extended information

When the average daily temperature is higher than 5 ℃, the soil temperature of 2 ℃ or more, the roots, stems, scales, buds began to sprout, the optimal temperature during the growth period of 25-30 ℃ in the temperature higher than 30-40 ℃ can also be normal growth; planted before and after the winter, the rhizome of the underground can be safe overwintering.

Liu Lanxiang in the early and mid-growth need more water, but in the bud period need sufficient sunlight and dry climate, in order to facilitate the growth of oil gland cells, therefore, suitable for growth in China's subtropical monsoon humid climate zone.

Leucaena is a light-loving plant, and its leaves are both the organs of photosynthesis and the main place for storing essential oil. If the planting density is too high, the poor ventilation and light transmission between plants will lead to high branching nodes, less branching, and the leaves are easy to fall off, thus affecting the yield and quality of essential oil.

Leucaena is not very demanding on the soil, sandy, loose soil is preferred, and neutral soil is suitable for pH. Due to the large biomass of the aboveground part of the liulanzhi, the amount of fertilizer required, especially nitrogen fertilizer demand.