In the landscaping, we often see that many crape myrtle cannot be opened for half a year. Many can only open flowers once. What are the reasons for shortening the flowering period of crape myrtle? After many years of observation, the author has found the reason why, and now the causes and countermeasures are introduced as follows for readers' reference.
Pruning is not timely in the work we often see. Many crape myrtle bloomed after the first flowering. No further inflorescences were drawn. The underlying reason is that there is no timely pruning of crape myrtle. The inflorescence of crape myrtle is on the top of the new shoot. Therefore, after each flowering, the flowering branches must be cut off in time and the new shoots should be promoted to prolong the flowering period.
The water and fertilizer does not reach the position where the flowering period of crape myrtle is long, so the requirements for water and fertilizer are relatively high. Due to the heavy workload, many garden workers only use one or two fertilizers a year, and they have less watering times. Adequate water and fertilizer is an important guarantee for the flowering of plants. Both pumping branches and inflorescences must have sufficient nutrients and moisture to ensure it. Therefore, in the flowering period of crape myrtle, there must be adequate supply of water and fertilizer. Generally speaking, phosphorus and potassium fertilizers can be topdressed after each flowering. Watering should be based on the soil moisture level. Generally, 15 days to 20 days in summer, water is poured once. You can.
Insufficient illumination Some crape myrtle plants are planted on the side of big trees or in the back of the building. Although they can grow, they are obviously weaker. The trees are weak, the branches are slender, and the trees can also flower, but the inflorescences are short, the flowers are light, and the flowering period is short. Lagerstroemia is slightly shade-tolerant, but it grows stronger in sunny places and has a longer flowering period. Therefore, lack of light is an important reason for the short flowering period of crape myrtle. For this kind of situation, Lagerstroemia crusgalli should be transplanted to a place with sufficient sunlight in time to make it grow healthily, so as to fundamentally solve the problem that it cannot be used for half a year.
Insect and pest control inappropriate crape myrtle pests and more common diseases are coal pollution, powdery mildew; common pests are scale insects, aphids, big bag moth, beetles, green-yellow ticks and so on. Coal pollution and powdery mildew have a great impact on crape myrtle, and the peak period of the disease is the crape myrtle's flowering period. Therefore, in order to make crape myrtle bloom for half a year, we must first ensure that crape myrtle is “strong and healthyâ€, in addition to strengthening water and fertilizer. Management, so that it is adequate nutrition, timely pruning, so that the plants to maintain ventilation and light is also very important, more critical is to timely prevention and treatment of diseases, in the "rule of early governance," the principle of prevention. For insect pests, multiple measures should be taken and multi-pronged to kill the pests in the bud.
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