1. Selection of culture soil: the requirement for soil is not high, but it is afraid of water accumulation and not tolerant to waterlogging. Therefore, we should choose loose and well-drained culture soil. Generally, we can use 4 parts humus soil, 4 parts garden soil and 2 parts sand as culture soil, or we can use dry pond mud mixed with some coal cake residue as basin soil.

2. Rational fertilization: When flowering, it is necessary to ensure sufficient nutrients, and at the same time, timely and appropriate fertilization should be used reasonably. Generally, in the vigorous growth period from April to July, liquid fertilizer is applied every 7~ 10 days to promote plant growth. The fertilize can be 10%~20% of decomposed bean cake, rapeseed cake wat or human excrement water.

In August, in order to promote flower bud germination, phosphate fertilizer was applied once every 10 day, and 20% liquid fertilizers such as decomposed chicken, duck and pigeon manure and fish offal could be used.

3, water control before flowering: usually watering should master the principle of "don't water, water thoroughly". But if you want to blossom neatly and richly, you must control the water before flowering. The watering of bougainvillea was controlled from September, and it can be repeated for half a month after each watering until the soil in the basin is dry and the branches and leaves are soft, and then the normal watering can be resumed after half a month.