1. In the growth period of bougainvillea, in order to make it bloom well, it is necessary to apply more phosphorus and potassium fertilizers and less nitrogen fertilizers, which can reduce the plant's vain growth and make it bloom brightly.
The buds of bougainvillea grow on the new branches. Applying some compound fertilizer to control water before flowering and applying 1 ~ 2 times of phosphorus and potassium fertilizer at flowering can prolong the flowering period, increase the amount of flowers and form a scene of flowering all over the trees. Pay attention to the need for timely topdressing after flowering in spring.
Extended data
First, the reason why bougainvillea does not bloom
1. Insufficient room for growth.
Bougainvillea has a well-developed root system and grows rapidly, so it needs to change pots in time. Bougainvillea planted in the open space of gardens and courtyards often blooms luxuriantly because of its large root growth space and unlimited extension. But family potted plants are limited by the size of flower pots. If the pots are not changed in time, the root system will grow poorly, which will inevitably affect flowering.
2. Insufficient light
Bougainvillea is native to tropical areas and likes plenty of sunshine. It needs light throughout its growing period, even in the sun. The longer the sunshine, the more flowers and the brighter the colors. On the contrary, not only will it not bloom, but even the leaves will gradually dim and fall.
3. The branches are too dense
Bougainvillea is full of vitality, and it will be thick as a forest in a few months, so it needs pruning in time. If the branches are not pruned in time and are too dense, it will cause excessive loss of nutrients, affect the differentiation of flower buds and make it difficult to bloom.
4. Improper water and fertilizer
Water should be properly controlled before flowering. If you water too much, it will affect the differentiation of flower buds and make it difficult to bloom. In addition, bougainvillea needs sufficient nutrients, especially phosphorus and potassium fertilizer, but if nitrogen fertilizer is applied too much, leaves will be green and flowers will be scarce.
Second, solve the problem that bougainvillea does not bloom.
1. Change pots in time.
According to the different growth conditions of plants, the bougainvillea should be changed in time. The time to change pots is usually in spring. If the plants grow well, the process of changing pots may occur twice a year, which is normal as long as it meets the growth needs of plants.
Increase light
According to the flowering period of bougainvillea, the light is supplemented in advance. The bougainvillea in the north needs to be planted in the greenhouse. If the lighting environment in the greenhouse is poor, fluorescent lamps can be used to supplement the lighting.
Timely pruning
If bougainvillea grows too densely, it should be pruned in time, which is not only beautiful, but also ensures the effective utilization of nutrition and is conducive to ventilation.
4. Control water and increase fertilizer
The flowering period of bougainvillea is between winter and spring, and the water should be strictly controlled before flowering, so that the leaves can wilt before watering; At the same time, we should control fertilization and topdressing in time. When applying fertilizer, nitrogen fertilizer can be appropriately reduced and phosphorus and potassium fertilizer can be increased, which is more conducive to flowering.
References:
Ningde City Housing and Urban-Rural Development Bureau-How to raise bougainvillea and make it full of trees
Xinhua County Forestry Bureau-Bougainvillea only grows leaves and does not bloom.