What chemical insecticide to give in the roots of the tree? The tree is fast losing its leaves. The leaves had come one month back only.
Certified GKH Gardening Expert
Treat the tree with neem oil. It is both a fungicide and a pesticide and works systemically, so it will get into the whole tree and kill pests from within the tree itself. Here is more information: https://www.gardeningknowhow.com/problems/pests/neem-oil-uses.htm