A Bougaivillea

Question

My Bougainvillea has Flowers, but the leaves are falling off.
Any idea why?

Answer 1

It could be losing leaves due to normal seasonal changes or due to excessively wet roots because of overwatering, too much rain, or poorly drained soil. See this article for more possibilities:
https://www.gardeningknowhow.com/garden-how-to/info/plant-dropping-leaves.htm