The pruning of bonsai black pine is not only once, but also many times in the whole process of its modeling, including after modeling. If its needle is not controlled, it will be difficult to make it a masterpiece. Therefore, from the beginning of the old pile, it should be reshaped and trimmed every year. Generally speaking, plastic surgery has a wide range of functions and needs to be carried out according to its physiological characteristics, and should be carried out after the end of autumn and during the winter dormancy period. At this time, the temperature is low, the sap flows slowly, and the trimmed incision basically does not lose fat, which is not easy to be invaded by germs and easy to recover. Let's take a look at the rest of the pruning to stabilize the plant type and narrow the needle.

When black pine is used as a bonsai, a key problem must be solved every year, that is, the length of needle clusters and branches is generally trimmed. Under normal circumstances, leaves are picked 1-2 times a year, so that with the passage of time, the originally long needles can become shorter and tighter. It can also be regarded as the domestication and management of needles. In terms of timing, most of them will be between March and September. It is suggested for the first time to choose March, pull out last year's old leaves and observe the situation of the tree. If the branches are thick, you can leave 2-4 stitches, almost more stitches, 4-6 stitches.

You can choose to pull the leaves for the second time around September, that is, at this time, you need to hurry and don't miss it. The treatment at this time is the key to cooperate with the first time. You can pull out all the leaves that you didn't pull out last time so that new leaves can grow. It should be noted that there is often a saying that for black pine bonsai, the process of modeling is the process of pulling leaves. Therefore, we should pay special attention to avoid two points in the operation, that is, we should not peel off all the leaves or knock out the bud eyes, otherwise it will affect the photosynthesis of black pine and indirectly affect its growth.

Bud cutting is also one of the important means to shape black pine. Generally speaking, it should be done after its branches are mature. In China, the temperature difference between north and south is great, and the growth of trees is different. The specific time suggestion is better according to the growth situation. In most areas, it is between June and July. Before preparing to cut buds, give it enough fertilizer and water to enhance the growth of trees and make it grow without problems in the later stage. After all, it's a minor operation and needs to be recovered. Generally speaking, the situation of cutting buds depends on the size of bonsai. It is enough to leave 1.5-2 cm for large and medium-sized bonsai and 1 cm for small bonsai. After cutting the bud, spray it again after a week of growth, which can effectively promote healing and avoid infection.