Why doesn't the cassia flower bloom
Life knowledge section, topics about why cassia flowers do not bloom and the fertilizers to be applied to cassia trees, including花草 (flowers and plants) topics, details are as follows:
Abstract: Cassia flowers have always been deeply loved by people and are often cultivated in the courtyard for appreciation. Every year, from August to September, cassia flowers bloom one after another, filling the air with a strong fragrance, intoxicating people. However, it is often the case that friends say that the cassia trees in their homes have not bloomed for several years and can only be appreciated as green potted plants. Why can't some cassia trees bloom normally when it's time to bloom? In fact, there are many reasons why cassia trees cannot bloom, such as being affected by environmental factors and inadequate daily maintenance, which can lead to the inability to bloom normally.
One of the cassia trees I used to grow was already over ten years old and bloomed normally every August and September in previous years, with a large number of flowers and a strong fragrance. In the following years, I paid little attention to it, did not repot or change the soil much, and the branches and leaves grew rather disorderly. When it was time to bloom, the number of flowers was reduced, and the fragrance was faint. Eventually, it stopped blooming. Later, I started pruning, repotting, changing the soil, and fertilizing it regularly, increasing sunlight exposure. The next year, it started blooming again.
Many friends who grow cassia trees at home may have had such an experience, where the flowers are doing well, but for some unknown reason, they do not bloom normally or bloom very few flowers with faint fragrance. What causes the cassia flowers not to bloom normally? How should it be maintained to make it bloom normally? Let's analyze this issue below.
One, what reasons cause cassia flowers not to bloom normally
In the process of growing cassia, it is often encountered that flowers do not bloom or bloom very few, and the reasons for not blooming are not the same. Some are caused by improper daily maintenance, and some are because the seedlings or cuttings have not reached the age of flowering. For example, it usually takes more than ten years for seeds to bloom, and cuttings need about three years to bloom normally. So, what are the reasons for the plants that used to bloom normally but later bloom less or not at all?
1. Soil alkalization hinders root absorption
Many cassia potted plants can bloom normally in the first few years, but then bloom less and less until no flowers are seen. This situation depends on whether it has been a few years since it was last repotted and the soil changed. If the soil is not changed to a fertile one for a long time, the nutrients in the potting soil are exhausted, the soil becomes alkalized, the roots cannot extend normally, and the absorption of nutrients is also affected. In this case, the plant grows poorly and is not prone to flowering.
2. Unbalanced fertilization causes luxurious growth
Another reason why cassia cannot bloom is unbalanced fertilization, which causes the plant to grow very vigorously, with dark green and shiny leaves, and lush branches and leaves, but still no flowers during the flowering period. This situation is often related to unbalanced fertilization and watering.
Any flower has different requirements for nutrient elements at different growth stages. If nitrogen fertilizer is always supplied, the plant will grow vigorously, with branches and leaves growing wildly. In this case, during the flower bud differentiation stage, the plant will only focus on maintaining the growth of branches and leaves and will not normally differentiate flower buds, making it difficult to bloom.
3. Insufficient sunlight affects growth
Cassia is a flower that likes sunlight and relies on proper photosynthesis to produce nutrients. When the potted plant is kept in an environment without sunlight for a long time, even with more fertilizer, it cannot be converted into nutrients for the plant's growth and development. Moreover, long-term lack of sunlight can also cause branches and leaves to grow excessively, thus affecting normal flower bud differentiation.
4. Not going through dormancy affects flowering
Cassia has a certain cold tolerance. Many friends in the northern regions worry about the plant freezing in winter and transfer it to a warm room before winter, with temperatures above 15 degrees Celsius. In this way, the plant is still in a growing state in winter and does not go through low-temperature dormancy. During the flower bud differentiation stage, it cannot normally differentiate flower buds and complete flowering.
Cassia tree why doesn't it bloom
Two, how to solve the problem of cassia not blooming
If the cassia at home does not bloom, you should first find out the reason to solve this problem. If you cannot accurately determine the reason, you can also strengthen maintenance management according to the following items, and it can usually return to normal blooming.
1. Regularly repot and change soil
If the cassia potted plant at home has not been repotted and the soil changed for many years, the soil will become compacted, which will definitely affect the plant's growth and development. It is best to repot and change the soil every 1-2 years to ensure that the soil is loose, breathable, and nutrient-rich, allowing the plant to grow vigorously.
① Soil requirements for cultivation
Prepare the cultivation soil in advance when repotting. It should be loose and breathable, have good drainage, and be rich in nutrients. A mixture of withered leaf soil, garden soil, coal cinders, and organic fertilizer can be used as the cultivation soil.
② Prune withered and old roots
For plants that have not been repotted for many years, there are many old and withered roots, as well as tangled fibrous roots after removing the pot. These old and weak roots have reduced absorption function and should be pruned with a disinfected scissor. Remove such withered and old roots and prune the tangled roots. Then, treat them with a 0.2% potassium permanganate solution for disinfection before replanting in a new pot.
2. Fertilization should be reasonable and balanced
Plants have different requirements for nutrients at different growth stages. Only by fertilizing reasonably can the plant grow and develop normally.
① Fertilization during the growing period
In the spring, when the plant is growing vigorously, it mainly grows branches and leaves, and the demand for nitrogen fertilizer increases. During this period, it is necessary to supply nitrogen-based fertilizers regularly. For example, you can apply some fast-acting fertilizers or fermented soybean cake, chicken manure, sheep manure, etc., to promote the lush growth of the plant.
② Fertilization during the flower bud differentiation stage
When the plant enters the flower bud differentiation stage, no more nitrogen fertilizer should be applied, or the branches and leaves will grow excessively, and flower buds will not differentiate normally, resulting in no flowers during the flowering period. Therefore, during the flower bud stage, the use of nitrogen fertilizer should be reduced, and phosphorus and potassium fertilizers should be applied. You can apply several dilute phosphorus and potassium fertilizers, such as potassium dihydrogen phosphate solution, through root irrigation or foliar application, which can promote the plant to differentiate flower buds.