Ask for Wei Zi stump maintenance advice.

From the photos, the Lagerstroemia speciosa stump was poorly maintained in the early stage, with malnutrition and poor root development. You need to change a bigger pot, and fill in some new soil on the basis of retaining the original flower soil, being careful not to hurt the roots.

1, Lagerstroemia indica stump planted in ground, suitable for 1 1 planting after defoliation in March next year. When planting, leave the trunk 100- 120 cm high and cut off the upper part. After the new spring bamboo shoots grow, choose 3-4 main branches with appropriate angles and let them blossom.

2. Potted Lagerstroemia speciosa stump. Potting seedlings with old branches is a good way to cultivate bonsai quickly. Because the branches of Lagerstroemia indica are soft, potted Lagerstroemia indica can be properly climbed and bound. Generally, when the spring shoots stop growing and the branches tend to be semi-lignified, they are coiled and drawn with thin brown ropes to make bonsai in various postures.

3. Lagerstroemia indica stump has strong adaptability to environmental conditions. Resistant to drought and cold. The requirements for soil are not strict, but it grows healthily and has a long flowering period when planted in fertile, deep, loose and slightly acidic soil; Fear of waterlogging, avoid planting in places with high groundwater level and low humidity; Like light, growth and flowering need plenty of sunshine and a little shade tolerance; It thrives in a warm and humid climate.

4. Pruning of Lagerstroemia indica stump. The crape myrtle inflorescence was planted at the top of the new branch of that year. Therefore, when pruning, the annual branches should be cut back again to concentrate nutrients and make the branches strong. Long branches, dead branches, drooping branches, pests and diseases branches, slender branches and endogenous branches should be cut off, and the lateral branches at the lower part of the trunk should be cut off in time during the young tree period, so that the upper part of the trunk can get enough nutrients and form a good crown.

5. Pests of Lagerstroemia indica stump. Common pests include scale, yellow thorn moth, giant salamander moth and so on. Therefore, we should pay attention to spraying pesticides for prevention and control.