1、 Family and genus

Luan tree is a plant of Acanthaceae and Luan genus. It is cultivated all over the world and widely distributed

2、 Characteristics

The bark of Luan tree is relatively thick, and the appearance color is grayish brown to grayish black. The longitudinal crack on the tree is more obvious after aging, showing dark brown. The leaves are opposite or alternate, and the texture is paper, with a length of about 5-10cm and a width of about 3-6cm. The base is relatively blunt, and there will be irregular serrations on the edge. Its flowering period is from June to August. The cymose panicle is about 25-40 cm long. There are four petals on a single flower, and the flower color is light yellow. It can bear a conical capsule with three edges, about 4-6 cm in length, and the top becomes sharp gradually

3、 Habits

Luan tree has strong adaptability and can withstand half shade, but it likes light. Sufficient light must be guaranteed. It can withstand drought and salt, but it is not resistant to long-term flooding and has strong resistance < a href=“ https://baike.baidu.com/item/%E7%83%9F%E5%B0%98 "> soot < / a > ability. It has strong adaptability to temperature and can withstand low temperature of minus 25 ℃ in winter

4、 Price

The price of Luan tree is mainly determined by its diameter. Small saplings may cost several to ten yuan a tree, and large trees can cost dozens of yuan a tree