If the branches are not properly trimmed in the growing period, it will not only affect the beauty of the plant type, but also consume a lot of nutrients, which is not conducive to the sprouting of flower buds, thus affecting the normal flowering and less flowering.
Too high room temperature affects the normal dormancy of plants, makes the physiological function still vigorous and consumes nutrients, which leads to premature germination and leaf extraction. In the next year, due to the decline of plants in the normal growth period, there will be less or no flowers.
The most suitable soil for the growth of Lagerstroemia specie is the soil with slight acid and neutral. If the content of salt and alkali exceeds 0.1% and the pH value exceeds 7.5, the normal growth and flowering of the plant will be affected.
The origin of crape myrtle is dominated by high temperature climate. Therefore, it is necessary to keep the temperature suitable for normal growth of plants during maintenance, otherwise it will affect its normal physiological functions, such as transpiration and photosynthesis, and then affect the production and storage of required nutrients, resulting in insufficient supply of nutrition during flowering and difficult to bloom.
The infection of various diseases and insect pests will seriously affect the accumulation of nutrients and the normal growth of plants, and it is very easy to cause the phenomenon of falling flowers and buds.
In addition to the reasonable maintenance and management to increase the plant's disease and insect resistance, it should also be timely and appropriate spraying of chemicals to effectively control disease and insect pests.
In the growth period of Lagerstroemia indica, if excessive application of water and fertilizer, it is easy to make the branches and leaves grow in vain. Most of the nutrients originally supplied to flower buds and buds are consumed by organs such as roots, stems and leaves, which leads to the lack of nutrition needed by flower buds in the flowering period, resulting in the situation of less or no flowering.
In addition, the fertilizer with high concentration was applied in the bud stage, and the control of water quantity was not in place, so that the excess fertilizer in the soil could not be diluted, and the flower and bud would fall easily after the root burning; in the flower growth stage, the water and fertilizer supply was insufficient, which would inhibit the normal growth of the plant, and the phenomenon of little or no flower would also occur.
