In spring, early summer and autumn, fertilization can be given to Bougainvillea, usually about once a half month, not when the potting soil is wet. Fertilization time should be chosen well, and it should be carried out in the morning or evening in summer. If you are not careful to fertilize excessively, you can wash the soil in the basin with water. If you bury it shallowly in the soil, you can dig out the fertilizer. But if you have damaged its root system, you need to remove the pot and prune the root system.
