Elm tree (scientific name: Ulmus pumila L.): Also known as spring elm, white elm, etc., it is known as "elm lump". It is a deciduous tree of the Ulmus family. The bark of saplings is smooth, gray-brown or light. Gray, the bark of large trees is dark gray, with irregular deep longitudinal fissures and roughness; branchlets are hairless or hairy, without enlarged cork layer and raised cork wings; winter buds are nearly spherical or oval. The leaves are elliptical and ovate, etc., with smooth and hairless surface. The back of the leaf has pubescence when it is young. Later it becomes hairless or some vein axils have tufted hairs. The petiole surface has pubescence. The flowers open before the leaves and form clusters in the leaf axils of the branches. Samara sparsely obovate-round. The flowering and fruiting period is from March to June (later in the Northeast). Distributed in Northeast China, North China, Northwest and Southwest provinces, North Korea, the former Soviet Union, and Mongolia are also distributed. It grows on hillsides, valleys, rivers, hills and sandy hills below an altitude of 1000-2500 meters.
Elm tree
With straight trunk, tall tree shape, thick green shade, strong adaptability and fast growth, it is an ideal tree for urban greening, street trees, courtyard shade trees, factory greening, and protective forest construction. important tree species. In dry and cold areas, it often takes the form of a shrub and is sometimes used as a hedge. And because the old stems and roots have strong germination ability, they can be dug out from the wild to make bonsai. In forestry, it is also one of the main tree species for creating windbreaks, soil and water conservation forests and saline-alkali land afforestation.
