Add this thing when restricting water before blooming on bougainvillea, and the flowers will bloom uniformly and cover the branches

Bougainvillea, also known as the paper flower, has large bracts with colors as vivid as flowers, and its blooming period is especially long, making it a very beautiful flowering ornamental plant.
Many flower lovers restrict water before the blooming period to make it bloom uniformly and cover the branches, but in the end they find it useless, and it still blooms very few flowers. What is going on?
In fact, this situation is caused by the bougainvillea not having enough vitality, so it cannot differentiate a large number of flower buds. Therefore, special attention must be paid during the half month of water restriction before blooming.
Specific method:Each time you water, wait until the potting soil is dry and the plant droops softly before watering. Before watering, add aspirin tablet powder. Aspirin can increase the bougainvillea's vitality and promote flower bud differentiation. Dissolve one aspirin tablet powder in 1L of water, shake well, and then pour it into the potting soil.
Note that no fertilizer should be applied during the water restriction period. After half a month, resume normal watering and fertilizing, and the bougainvillea can bloom uniformly and produce many flowers.
Bougainvillea loves light, but it is also a short-day plant. During the blooming period, insufficient or excessive light will have a certain effect on it. It is best to let it receive 9-10 hours of sunlight each day. For the rest of the time, you can give it dark treatment by covering it with a black plastic bag. From about 5 p.m. each day until 8 a.m. the next day, let it be completely without light. Besides normal watering every day, spray more water on the leaves to increase humidity, which can also promote budding and growth.
That is all for the care of bougainvillea. If flower lovers have other additions, you can share them with everyone in the comment section below. If you want to learn more about flower care, you can follow Huajianke!