What are the reasons why bougainvillea does not bloom?

What makes bougainvillea special is its large and beautiful bracts, so its leaves are often mistaken for petals, which is how it got its name. Some flower lovers also grow it themselves because they like this feature. But during the process of keeping it, some growers find that their bougainvillea does not bloom, or blooms sparsely. What exactly causes this?

Bougainvillea (detailed introduction)

1. Light problem:This one is relatively easy to check. Bougainvillea is a sun-loving plant and requires plenty of light during the growing period. The stronger the sunlight, the more abundant and vivid the blooms. Conversely, if it grows in a dark environment for a long time, it will not bloom.

2. Fertilizer problem:Potted flowers all face fertilizer issues, especially woody flowering plants, which have a greater demand for fertilizer. This can be based on the size of the pot, generally once a month. During the vigorous growth period of bougainvillea, liquid fertilizer should be applied once every half month, and more can be applied when the ambient temperature is higher. Applying more phosphorus and potassium fertilizer is beneficial for flower bud differentiation and ensures robust flower buds.

3. Watering problem:There is a saying: "Frequent watering means no flowers; little watering means continuous flowers." Water control can make the flower bud differentiation of bougainvillea largely influenced by how much water it receives. Generally, water control should be carried out about 50 days before flowering. That is to say, to make bougainvillea bloom on "National Day" (October 1), we should start water control on August 10. If rainy weather occurs, it should be moved into a greenhouse or covered with a rainproof film to prevent the potting soil from being drenched. The water control period is about 10 days, at which point the epidermis of the current year's branches of bougainvillea becomes slightly wrinkled. After that, resume watering and carry out normal management. At this time, the bougainvillea will shed its old leaves and sprout new buds.

4. Pruning problem:Some flower lovers are reluctant to prune, which leads to scattered nutrients and makes it difficult to form flower buds. Every spring, when bougainvillea has flower buds, you can cut off some weak branches and diseased branches, and after flowering, also cut off the flower stalks.

Reasons why gardenia does not bloom, and what to do if gardenia does not bloom

The reasons why gardenia does not bloom are just a few points. Generally, gardenia leaves are evergreen all year round, and the flowers are fragrant and elegant, looking especially clear and lovely, so they are loved by many families. Its flowering period is spring and summer, and it can continue blooming from May to August. But sometimes the gardenia we plant does not bloom. Below is a summary of the reasons why gardenia does not bloom and how to deal with it.

Gardenia likes acidic soil. The soil in the north is more alkaline. Over time, the soil quality will be affected, nutrients will be insufficient, and naturally the gardenia will not bloom.

Solution:

When watering normally, you can add some ferrous sulfate to improve the soil. You can also often apply 10% alum fertilizer water as a top dressing. Normally, you can also ferment acidic fruit peels such as pineapple, orange, and pomelo and put them into the soil.

Gardenia likes fertilizer. If fertilizer is insufficient, it will lead to poor plant growth, and there will be no nutrients to supply flowering. Once water and fertilizer are excessive, it will cause the plant to grow leggy. Without enough nutrients for growth, flower bud formation will be affected, leading to no flowering or very few flowers. Some may bloom but even drop immediately.

Solution:

a. During the growing period of gardenia, apply more decomposed cake fertilizer, once about every 10 days. Starting in April, spray potassium dihydrogen phosphate solution once a week at a concentration of 1:2000, until most branches of the entire gardenia plant show flower buds.

b. After budding, use potassium dihydrogen phosphate to water the roots twice more to enhance the plant's stress resistance and promote larger and more fragrant flowers. If the flower buds crack and show white, then stop fertilizing.

Unsuitable light. Gardenia likes shade, and special attention should be paid to excessively strong light in summer and excessively weak light in winter. Too strong or too weak light will affect gardenia flowering.

4. Reason why gardenia does not bloom: flower branches not pruned

Without pruning and shaping, gardenia branches become messy. A large number of miscellaneous branches consume a large amount of nutrients, and branches that are too dense affect photosynthesis. These are all important reasons for not blooming.

Gardenia mostly grows in the south and is commonly seen in suburbs or on mountains. The south has more rain, so it likes acidic soil. For potted plants, you can consider this factor. When watering, you can consider adding ferrous sulfate to improve the soil.

Many people put potted plants in places where they cannot see sunlight. In summer, appropriate shading can be provided, and in other seasons they can be exposed directly to sunlight.

Apply decomposed cake fertilizer during the growing season, and apply phosphorus and potassium fertilizer during the flowering season.

Why bougainvillea does not bloom