Bougainvillea require at least 5 hours of direct sun. Good Drainage is a must. Potted plants need to have roots trimmed occasionaly and a 20-20-20 mix of fertilizer is good.
Place Bougainvilleas in full sunlight in a well drained pot, preferably outdoors as it unlikely to bloom indoors. It needs at least 5 hours of sun per day to bloom.
Water regularly and make sure they get plenty of sun but don't let them burn if they get sunburn the leaves will fall off and you will have to start ovr with them give them one Jobes plant spike about very two weeks.