Q.What Could Be Wrong With The Mango Tree?
The soil is wet a lot of the time, but the drain is also pretty good. And it’s not the brightest light where it stands. Why has it lost 50% of its leaves and started dying on the top of the branches. It’s inside, and temperature is between 19-23 •c.
Certified GKH Gardening Expert
During the winter you need to cut back on watering. The problem may be too much water. It also needs about 6 hours of sun a day, so you probably need a grow light. If the pot was outside during the summer and you brought it inside, it is responding to the change in light and temperature. Here are the cultural conditions it needs.
https://www.gardeningknowhow.com/edible/fruits/mango/mango-trees-in-pots.htm