Why doesn't bougainvillea bloom?

The flowering period of Bougainvillea varies slightly between the north and the south. It usually blooms from March to July in the north, while in winter and spring in the south. The length of the flowering period varies depending on the environment.

Causes and solutions for non-flowering

Insufficient growing space

Bougainvillea has a well-developed root system and grows rapidly, so it needs to be repotted in a timely manner. Bougainvillea planted in the open field in gardens and courtyards often blooms luxuriantly because its root system has a large growth space and can extend indefinitely. However, home potted plants are limited by the size of the pots. If the pots are not changed in time, the root system will grow poorly, which will inevitably affect flowering.

Solution: Change to a larger pot in time.

Depending on the growth condition of the plant, the pot usually needs to be changed when the ratio of plant to pot is 3:1. Repotting is done in spring and autumn every year, and plants with good growth are repotted once or even twice a year.

Insufficient light

Bougainvillea is native to tropical regions and prefers plenty of sunlight. It needs sunlight throughout its entire growing period, even if it is exposed to direct sunlight. The longer the sunshine time, the more flowers there are and the brighter the colors. On the contrary, not only will it not bloom, but the leaves will gradually become dull and fall off.

Solution: Add additional light in advance according to the flowering period of Bougainvillea. If it is maintained indoors and the lighting conditions are poor, it is recommended to use fluorescent lamps to supplement the light.

Too dense branches

Bougainvillea has strong vitality and will grow as dense as a forest in a few months, so it needs to be pruned in time. If the branches are too dense and not pruned in time, it will cause excess nutrient loss, affect the differentiation of flower buds, and make it difficult to bloom.

Solution: Top the plant in time according to its growth and thin out the dense branches.

Improper watering and fertilization

Do not water before flowering, control water appropriately. 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 to bloom, especially phosphorus and potassium fertilizers, but if too much nitrogen fertilizer is applied, the leaves will be green and the flowers will be sparse.

Solution: Control watering before flowering, and wait until the leaves wilt before watering. Apply fertilizer in time, reduce the application of nitrogen fertilizer, and increase the application of phosphorus and potassium fertilizers.

How to Make Bougainvillea Bloom

How to promote flowering in a short time

When the leaves of the newly sprouted branches turn dark green and the branches become full, use 750 times the aqueous solution of paclobutrazol or 1000 times the aqueous solution of chlormequat, and apply 2-3 kg of the solution to each pot. Then move it to a cool place, and after 3-5 days move it to a place with better light. After 10-15 days of cultivation, the plants will bloom one after another.

Not to mention that we have to wait as long as half a month, people are pregnant for ten months, but the bougainvillea blooms in half a month. How efficient is that!

How to keep bougainvillea blooming

Bougainvillea is a light-loving plant, so first we should increase the light.

If you want bougainvillea to continue blooming, you need to control the growth of leaves. Therefore, increase the application of phosphorus fertilizer appropriately and do not apply nitrogen fertilizer.

Prune in time after the flowering period to promote the growth of new branches, so that the bougainvillea will bloom abundantly next year.