Tuberose is a perennial vine-like twining herbaceous plant with weak, hairy and latex branches. The flowers are mostly yellow-green, especially at night. They are also known as night flowers and evening primrose. Most of them are potted ornamental plants. Their floral fragrance can make people breathe hard, so they should not be placed indoors.

Tuberose, also called night scented flower, night scent tree, night lilac, tuberose, night orchid, etc., is a flower ornamental plant native to tropical areas of America. The branchlets are weak, hairy, and have The flowers of latex are mostly yellow-green and have a refreshing fragrance, especially at night. They are mostly potted ornamental plants, but they should not be placed indoors. The floral fragrance can make people breathing difficult.

The structure of the petals of tuberose is different from that of ordinary petals that bloom during the day. The stomata on the petals of tuberose have a special characteristic. Once the humidity of the air is high, it will expand. When the pores expand, the evaporated fragrance will evaporate. There is more oil. Although there is no sunlight at night, the air is much humid than during the day, so the stomata are dilated and the aroma released is particularly strong. The fragrance of tuberose flowers is stronger not only at night, but also on rainy days than on sunny days, because the air humidity is high on rainy days.

Tuberose is native to South America and is distributed in low-latitude areas such as Yunnan, Guangxi, Guangdong and Taiwan in China. It is a semi-wild vegetable whose fresh flowers and buds are eaten. In addition to being for viewing, the flowers can be used for food and medicine. They have the effect of clearing the liver and improving eyesight. They can treat red and swollen eyes, measles, remove corneal nebula, remove toxins and promote muscle growth, strengthen muscles and bones, dispel wind and remove dampness, etc. . Every summer and autumn, clusters of small yellow-green bell-shaped flowers will bloom in the leaf axils. When the moon rises above the treetops, they will emit bursts of fragrance. This fragrance scares mosquitoes.