Bón phân thường xuyên. Uốn và tạo thế hoa giấy.

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Feed the plant a fertilizer every few months to keep the flowers blooming. Fertilizing too frequently can cause the plant to grow quite vigorously, so if you find that it's getting too large, cut back on fertilizer.  Most bougainvillea gardeners go with a 1:1:1 or a 2:1:2 fertilizer for regular fertilizing, not the high-phosphate fertilizer used at planting. Organic or slow-release fertilizers work best.  Be sure to fertilize at least once a year, at the beginning of spring, to help the season's growth get underway. Bougainvillea plants need support to cover a wall, fence, or other area. If you'd like the plant to grow in a certain vertical spot, you can hang rows of wire or string against the surface that you want covered. Tuck the bougainvillea branches behind these guidance supports at regular intervals. Keep a close eye on growth and adjust as necessary until the bougainvillea starts covering the wall or other surface.