What to Do When a Tree Has Pests? A Detailed Guide to Prevention and Control Methods

Tree is the general term for woody plants. Whether in the city or the countryside, it is indispensable everywhere. Especially in the city, without trees, the city would not be so beautiful. So, what to do when a tree has pests?

I. What to do when a tree has pests?

It depends on what kind of pests the tree has, and only then can the corresponding solution be adopted. There are many kinds of trees, and the pests they get are different too. Some pests can be killed by natural enemies, some can be killed manually, and some require the use of pesticides for control. To prevent trees from getting pests, you can clear the garden in winter to eliminate pest sources, or spray lime sulfur mixture to kill pests and eggs.

II. What is the oldest tree?

The oldest tree is the ginkgo tree, which began to appear 270 million years ago. It is a rare relict species from the Mesozoic era and is native to China. Only Zhejiang Tianmu Mountain has trees in a wild state, growing in natural forests at an altitude of 500-1000 m, in acidic (pH 5-5.5) yellow soil, in well-drained areas, often mixed with coniferous and broad-leaved tree species such as Japanese cedar, Torreya grandis, and blueberry tree, growing vigorously.

The ginkgo tree is a deciduous tree of the Ginkgoaceae family and Ginkgo genus, up to 40 m tall, with a diameter at breast height of up to 4 m; the bark of young trees is shallowly fissured, while the bark of large trees is grayish-brown; the crown of young and middle-aged trees is conical, and when old it becomes broadly ovate; the leaves are fan-shaped, with long petioles, light green, turning yellow before leaf fall in autumn.