How do you control water to promote flowering in bougainvillea? Can not watering also extend the flowering period?
Many flower lovers should be very familiar with bougainvillea. It often appears on the streets of southern China and is designated as the provincial flower of Hainan Province. It is a plant with extremely strong ornamental value. Growing bougainvillea is naturally for ornamental purposes, and to raise its ornamental value to the highest level, water control is necessary. So how do you control water for bougainvillea? Below, the editor will explain in detail the methods of water control and flower promotion for bougainvillea.
1. Watering methods for bougainvillea

Before answering how to control water for bougainvillea, let us first look at the watering methods for bougainvillea. It is understood that bougainvillea has many and large leaves, and water is easily consumed, so we should water frequently, especially in summer, when we should increase the amount of watering. The specific watering frequency is as follows:
Spring and autumn: water bougainvillea once a day; summer: water once in the morning and once in the evening; after the growth period, reduce watering in late summer, generally 3 or 4 times a week is enough; after flower buds appear, increase watering frequency, watering once in the morning and once in the evening every day. However, the amount of water should not be too much, otherwise symptoms such as root rot in bougainvillea, yellowing leaves in bougainvillea, and flower drop in bougainvillea will appear.
Finally, after October in early winter, because the temperature drops and water evaporation slows down, the watering frequency should also be reduced, once every three days is enough. As the temperature continues to drop, if the soil is not dry, do not water, or wait until the soil is completely dry before watering. In general, when watering bougainvillea, it is best to grasp the principle of "do not water if not dry, and water thoroughly when watering."
2. How to control water for bougainvillea, water less
In the cultivation methods of bougainvillea, many points that we need to pay attention to are introduced, but to grow it well, there is one more point everyone should pay attention to, and that is the issue of water control! Why bougainvillea does not bloom, why the flowering period of bougainvillea is short, and so on, are actually mainly related to water control. So how do you control water for bougainvillea? Let us continue reading.
3. Methods of water control and flower promotion for bougainvillea
1. Timing of water control
For how to control water for bougainvillea, first pay attention to the timing. Water control for bougainvillea generally lasts about three weeks, and it is best to complete it 40 days before flowering. During water control, we should water half as much as usual, or only spray. Note: do not fertilize during the water control period.
Editor's tip: For bougainvillea, the time from the appearance of flower buds to flowering is generally about 20 days, and water control is best carried out 40 days before flowering, so everyone should consciously grasp the timing. If you want bougainvillea to bloom in October, water control needs to begin at the end of August.
2. Water control methods
When it comes to the methods of water control and flower promotion for bougainvillea, it is actually very simple. According to the size of the flower pot, during the water control stage, we simply do not water it. After the bougainvillea is so short of water that it is almost withering, water only half as much as usual, or spray a little water (if the weather is stuffy and hot, water a bit more), to maintain the plant in a state of being withered for half a day and not withered for half a day.
In short, the purpose of water control is to make bougainvillea show a state of leaf withering, prevent it from sprouting and growing new leaves, make all the plant's nutrients supplied to the old leaves, promote branch maturity and flower bud differentiation. However, during water control the plant is in a wilted state, so flower lovers with poor psychological endurance had better not use the water control method; it is very agonizing!
3. Flower promotion methods for bougainvillea
Before water control, apply a 1:1:1 compound fertilizer as a top dressing. After the leaves wilt, add a small amount of water or spray the leaf surface. Repeat this until all the leaves have fallen off, then water thoroughly. After doing this, bougainvillea will bloom with beautiful flowers all over.
Practical experience in water control and flower promotion for bougainvillea. How does bougainvillea control water? How does bougainvillea extend its flowering period?
When it comes to bougainvillea, I believe everyone will be attracted by its beautiful flower colors and alluring floral fragrance. Bougainvillea is a common flower that blooms in this season. It is deeply loved by many flower lovers. So, do you know what practical experience there is in water control and flower promotion for bougainvillea? Today, the editor will introduce it to everyone in detail.
1. Determination of flowering time.
It must be calculated backward according to the local temperature and the most suitable time for flowering. In Guangdong, it can bloom from December to New Year's Day, or even during the Spring Festival. In Guilin, it can only bloom from October to November, when the temperature is more suitable. In the weather of Indian summer, it is not too cold, with an average daily temperature reaching 12 degrees. It is not too hot, and the flowering period is drawn out longer. If the climate is good, it can bloom until New Year's Day. The flowering period can last as long as sixty days. If it is arranged to bloom during National Day, then the temperature is too high. The flowering period is only one month. Based on this observation, I choose to arrange the flowering period from the end of October to November. This can both extend the flowering period and allow it to overwinter safely. If it is Beijing, only October flowering can be considered, which can both add glory to National Day and allow safe overwintering. The farther north you go, the earlier it must be; the temperature shows no mercy.
2. When should water control begin?
Water control generally takes three weeks, about 21 days. From bud appearance to full bloom also takes about 20 days. Assuming full bloom is arranged for National Day, then water control must be completed around September 10, with sufficient water supply given, and fertilization carried out at the same time, so that the flowers quickly form buds and enter full bloom. Going back 20 days from September 10, that means water control should begin around August 20. For my rooftop garden, with flowering arranged from the end of October to November, I must finish water control in mid-October. Going back 20 days, so I begin water control on September 25. This is my calculation method. Considering that mine is a rooftop and the factor of rain, I even begin water control in mid-September. The season can only be moved earlier, not delayed. The water control time can only be longer, not shortened, in order to facilitate full flower bud differentiation. Most bougainvillea of flower lovers are on balconies or in warm sheds, so you can consider the local climate and design the flowering and water control times yourselves, without interference from the weather.
3. How to control water?
My approach is, according to differences in pot size and plant size, during the water control stage, first do not water, letting it wither from lack of water, then give only half the usual water, or spray some water, maintaining half a day of withering and half a day of not withering every day. According to the climate, if the weather is too dry and too hot, appropriately give a little more water, or if it rains, do not water. The goal is that every day there must be a condition of leaf withering, and it can no longer sprout new buds or grow new leaves, so that nutrients are supplied to the old leaves, making the branches mature and the flower buds differentiate. During the water control period, do not apply fertilizer; in a drought state, fertilizer absorption is also poor, and it can also cause root damage.
4. Management of flower release.
After three weeks of water control, water thoroughly, loosen the soil and cut the roots to promote new root growth, then apply fertilizer more than three times. Promote flower bud sprouting, growth, inflorescence elongation, and full blooming of flowers. Generally fertilize once a week, and after full bloom, fertilize once more. This can meet the needs of the entire flowering period. Cutting old roots and growing new roots gives strong fertilizer absorption ability, and only then will it be lush during the flowering period. This must be done.
The above is all the content I have learned today about bougainvillea. I hope flower lovers will find it helpful after reading this article. If you want to learn more about bougainvillea, please continue to follow Duorou Huapu, and we will provide you with more related knowledge!
Methods of water control and flower promotion for bougainvillea
Determination of flowering time for bougainvillea
Everyone can calculate according to the flowering time in different places. In Guangdong, it blooms from December to New Year's Day, or even during the Spring Festival, and in Guilin it blooms from October to November. The temperature during the flowering time in these areas is relatively suitable, with an average daily temperature of 12°C. At this time, the flowering period can last as long as 60 days, but if it blooms during National Day, the temperature is higher and the flowering period is short.
In summary, it is recommended that everyone choose the flowering period from the end of October to November, which can both extend the flowering period and allow safe overwintering. In northern regions, October can be considered, but the farther north you go, the earlier it must be.
Water control methods for bougainvillea
Timing of water control
Water control generally takes three weeks, and from bud appearance to full bloom also takes about 20 days. According to the calculated flowering time, begin water control 40 days in advance. If you want bougainvillea to bloom in October, water control needs to begin at the end of August.
How to control water
The water control method is very simple. According to the size of the flower pot, do not water during the water control stage. After it withers from lack of water, water only half the usual amount, or sprinkle some water. Ensure the plant is in a state of being withered for half a day and not withered for half a day every day. According to the climate, if the weather is stuffy and hot, appropriately water a little more, or if it rains, do not water. In short, the purpose of water control is to create a state of leaf withering every day, prevent sprouting and growing new leaves, make all the plant's nutrients supplied to the old leaves, and promote branch maturity and flower bud differentiation.
Note that you should not fertilize during the water control period. In a drought state, fertilizer absorption is poor and it can also damage the roots. However, during water control the plant is in a wilted state, so those with poorer psychological endurance had better not use the water control method; it is very agonizing.
Management of flower release
After three weeks of water control, water thoroughly, then loosen the soil and cut the roots, and apply top dressing three times, usually once a week, twice before flowering, and once more at full bloom, to promote flower bud sprouting.
During flowering, in order to control the inflorescence from growing too long, make the flowers concentrated and the plant shape compact, when resuming watering, use paclobutrazol once at a concentration of 2 in 10,000.
Editor's suggestion
During the water control stage while waiting for bougainvillea to bloom, the flowers' leaves droop, listless and lacking vitality, and the grower is also in a bad mood, but you still need to be patient and must observe carefully, otherwise the plant can easily die during the water control period. Once the flowers bloom according to your expectations, the sense of accomplishment is hard to describe! The whole garden of flowers is in full bloom, and the new flowers are also in full bloom!