Bougainvillea not blooming: what fertilizer can promote flowering

Fertilizing is of great significance for the growth of potted flowering plants, because flowering plants need a large amount of nutrients to support them during the flowering period; otherwise, insufficient nutrition may reduce the number of flowers and lower the quality of blooming, and may even cause a failure to bloom. Especially for flowering plants like bougainvillea, which are relatively fond of fertilizer and tolerant of it, scientific and timely topdressing is even more important for flowering during the growing season.

Potted flowering plants are often limited by the space in the pot, and the amount of soil is relatively small, so the nutrients they can normally store are naturally limited as well. For flowering plants like bougainvillea, which both like fertilizer and produce large and numerous blooms, timely nutrient supplementation can effectively promote flowering. Conversely, if nutrients are insufficient, then in severe cases it can cause poor growth due to a lack of nutrients, leading to a failure to bloom. So, what fertilizer should be applied when bougainvillea does not bloom?

Fertilizing potted flowering plants is a technical task, and achieving the purpose and effect of topdressing is often related to many factors such as the type of fertilizer chosen, the timing of fertilization, and the topdressing method. Therefore, even for a flowering plant like bougainvillea that is relatively fond of fertilizer, fertilization still requires scientific methods. From the perspective of what kind of fertilizer should be chosen for topdressing to promote bougainvillea flowering alone, this is also very important.

First, we need to be clear that bougainvillea not only likes fertilizer, but is also relatively fond of heavy fertilizer. As long as it is not concentrated fertilizer or raw fertilizer, it can usually be fertilized heavily, because bougainvillea is relatively fond of fertilizer and tolerant of it, especially during the flowering period when nutrient consumption is very high. In addition to applying enough farmyard manure, organic fertilizer, and compound fertilizer as base fertilizer when potting, topdressing during the growing period is also very important, and scientific and reasonable topdressing can ensure that bougainvillea blooms smoothly and with high quality as scheduled.

During the growing period, bougainvillea often needs more phosphorus and potassium fertilizer and less nitrogen fertilizer. Appropriately increasing the proportion of phosphorus and potassium fertilizer and reducing the proportion of nitrogen fertilizer can effectively prevent excessive vegetative growth, and at the same time can store sufficient and suitable nutrients for flowering as scheduled; moreover, the flowers will not only be large but also more brilliantly colored. Therefore, generally 1 month before flowering, apply some compound fertilizer with a high proportion of phosphorus and potassium, and at the same time manage water control well.

During the flowering period, we can also apply 1-2 times of dilute phosphorus and potassium fertilizer to potted bougainvillea as appropriate. This can not only increase the number of flowers, but also improve the quality of blooming, and can also achieve the purpose of extending the flowering period, making potted bougainvillea present a beautiful scene of flowers covering the whole tree. After flowering, in addition to promptly removing spent flowers and pruning flowering branches, it is also necessary to topdress in time to supplement nutrients, so that the plant can quickly recover its vigor and lay a foundation for the next round of flowering.