1, strong drug promotion:

The use of trunk thickening and knot-shrinking agent can effectively make plants grow thicker and stronger quickly in a short time.

2, amputation and germination:

Cut off the top of the trunk and redundant lateral branches, ensure that there are branch buds in the rest, let the trunk be buried, let branches replace the trunk, or widen the plant with branches;

3. Physical injury:

Enclose it with iron wire or cut it vertically with a knife, or you can choose brown silk to climb. Boxwood branches are thick and hard, and brown silk can avoid cracks in plants. After climbing a tree, swollen scars or vertical scars can be formed around the tree, making it thicker.

Note: After the boxwood is pruned, you can rotate the flowerpot properly so that the branches that need to grow thick face south, so that the branches can be exposed to more sunlight and grow thick as soon as possible.

Extended data:

Maintenance of boxwood bonsai;

1, water:

Boxwood needs a lot of water, so it should be watered frequently to keep the soil moist, but it should not be watered too much to cause water accumulation. In addition, in summer, besides watering in the morning and evening, foliar water should be sprayed.

2, fertilization:

May-August is the vigorous growth period of boxwood, and it is enough to apply decomposed pancake fertilizer and water almost once a month, and apply base fertilizer once in winter, using cooked manure or dry cake fertilizer as leftovers.

3, pruning:

During the growing period, if there are long branches, overlapping branches or other redundant branches that affect the tree shape, cut them off at any time. Poplar germinates faster. Generally, after new buds germinate, the top 1-2 nodes are cut off to prevent excessive growth. After the fruit is harvested, it should be picked in time to avoid consuming nutrients and affecting the growth of trees.