Luan tree is a type of street tree that is now common throughout the country. Deciduous trees. The leaves contain tannin and can be made of quercetin. Flowers can be used in medicine and can also be used as yellow dye. Wood can be made into utensils, and seeds can be pressed for oil.
When we were young, luan trees in urban and rural areas were extremely rare. When it comes to street trees and landscape trees, everyone must first think of tung trees, plane trees, paulownia trees, magnolias, magnolias, mulberries, willows, elms, locusts, large-leaved poplars, etc.
With the development of the times, several of these trees have begun to be gradually eliminated! For example, poplar trees love fluttering hair, willow trees do not shade, plane trees, locust trees are good, is slow growth. And poplar trees fluttering in the spring is a nightmare for many allergy sufferers!
In the flower language of flowers and plants, the meaning of luan tree is: brilliant life, wonderful shock! Its vitality is very tenacious, hardy, drought-resistant, and has a strong wind resistance, can resist the low temperature environment of minus 25 degrees, and has strong resistance to dust, ozone, sulfur dioxide. And the ornamental is extremely high, its flowering period is long-lasting, up to 3 months long, almost throughout its entire life, so the meaning of the flower language is a brilliant life.
The aliases of Luan tree are: Wood Luan, Luan Hua, Shi Luan, Ula, etc., is a subfamily of the family Apocynaceae, Luan tree plants. It is a deciduous tree or shrub; the bark is thick, gray-brown to gray-black, longitudinally lobed in old age; the skin hole is small, gray to dark brown; the small branches have warts, and the leaf shaft and petiole are wrinkled short soft hairs or hairless.
Luan trees are now used as high-quality ornamental trees, and their application effect is better in urban green spaces and road greening. At the end of summer and the beginning of autumn, the yellow flowers are full of trees and have a faint fragrance. After autumn, the leaves turn yellow, and the fruits are purple-red, which is also very beautiful.
Generally speaking, the flowering period of luan trees is from June to September every year. However, according to this "Shihe No Self Resident" on the shore of the water in southern Henan, in the collection of personal essays and essays of "My Blue and White My Porcelain", when he wrote this short essay "Luan Tree of Brilliant Life", he can clearly tell the teachers and friends that the flowering period and length of the Luan tree in different provinces and regions, the size of the flowers, the shade of the flowers, are slightly different.
According to my observation, this luan tree is in the basin of the Water In southern Henan, its flowers are slightly small, the petals are yellow and red, and there are red spots at the base. Pieces of luan tree flowers, in the autumn of the season, after the eclipse, as if the eyes fall colorful, just like a golden drizzle, so it also won the nickname "Golden Rain Tree"!
The wonderful luan tree also has a nickname for "lantern tree". This is because every late autumn, the luan trees will bear fiery red fruits, and they are clustered together like small red lanterns. Therefore, luan trees are also called lantern trees.
The fruit of the Luan tree is from September to October, its fruit is wrapped in three pieces of fruit peel, and the canopy is hung in bunches, especially the luan forest planted in pieces, its colorful and dazzling, let people linger to appreciate and praise! In late autumn, this lantern fruit will gradually turn yellow and black, until it falls on the branches with gusts of autumn wind!
Generally, luan trees grow in calcium-based soils produced by limestone weathering, which are relatively hardy, and were originally only distributed in China in the Yellow River Basin, as well as the lower reaches of the Yangtze River Basin, which are rare in the north of the Hai River Basin, and usually cannot grow in the silicyl acidic red soil area. Luan trees germinate later in spring and fall leaves earlier in autumn, so the annual growth period is shorter and slower.
However, because the vitality of luan trees is strong, the tree shape is tall, the branches and leaves are beautiful and the flowering period is long, especially wind-resistant, drought-resistant, disease-resistant and pest-resistant, etc., and has environmental protection functions, with the extensive planting and adaptation of domestication in urban and rural areas in the past ten years, most of the provinces and regions in China and the northern regions can see their handsome figures!