What are the main points of propagation and preservation of Lagerstroemia indica?

Key points of propagation and preservation of Lagerstroemia indica;

Maintenance points: like warm, humid and sunny places. Cold tolerance, drought tolerance, fear of shade, fear of stagnant water, like calcareous soil. The optimum growth temperature is 15 ~ 25℃, and it can tolerate the low temperature of -5℃ in winter. Land should be planted in well-drained and sunny places, rich sandy loam and calcium. Transplanted in spring, the soil is moist during the growing period. Strengthen pruning and plastic surgery. Adult trees are applied with heavy fertilizer in early spring and phosphate fertilizer in early summer. Cut off inflorescences in time after flowering to reduce nutrient consumption. In the process of growth, tillers and buds on trunks and branches should be cut off in time, and pruning should be carried out in winter. Change pots every 1 ~ 2 years in spring, and cut off half of them. Potted soil is a mixture of fertile garden soil and humus soil. During the growing period, the soil in the basin is wet, and fertilizer is applied every two weeks. After flowering, cut off the long and overlapping branches. Control powdery mildew and scale insects.

Breeding: sowing in spring; The optimum temperature for germination is10 ~13℃; Softwood cuttings are used in late spring and semi-mature cuttings are used in summer.