I planted a paulonia twig about a year ago and it has grown to about 7'. Suddenly, the large leaves started showing holes from some insects eating them, as well as large brown areas on the edges of the leaves. I sprayed the with Specticide Immunox, but am not sure that helped. Most of the leaves have fallen off. What could be the problem and what can I do about it?

The leaves are falling due to drought and early fall color. I would not worry about condition of leaves or insects at this time. I would ensure that watering is adequate.

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