When is a good month to plant trees?

March 12 Arbor Day is the best time to plant trees, with the highest survival rate.

The survival of "tree" is the survival of "root system" first. For new tree planting, the task of root system is very heavy. On the one hand, the wound needs to heal, on the other hand, new capillary roots need to grow, so that the root system function of absorbing water and inorganic salts can be normal and meet the development and growth needs of the aboveground parts. But most of the time, the healing and growth of underground roots are synchronized with the germination and branching of aboveground parts. Once the overground part grows too vigorously, it will consume a lot of nutrients and directly affect the growth of underground roots. In this case, the new tree planting is characterized by "sprouting first and then dying". Root system survival needs to meet: temperature conditions, moisture conditions, air permeability conditions and so on. Generally, the soil temperature in the northern area around Tomb-Sweeping Day is more suitable for root development and growth. In addition, some "easy-to-cut" tree species will use sieve tubes to absorb water, and they can sprout and branch while growing new roots, and eventually develop into complete plants. As long as the water supply is guaranteed, about two thirds of branches and leaves are removed, proper shading and water spraying are used to reduce transpiration, trees like this can survive in spring and autumn in Xia San.