We have a Pawpaw tree that has been growing less than 2’ from a large maple in our front yard. In the 16 years we’ve lived here, it has been healthy and loses its leaves as normal in autumn. This past week after a brief wind and rain storm, a bunch of leaves fell, and now continue slowly dropping. The downed leaves are a mixture of fresh, bright green and dried and dark green. The canopy is likewise. No disease appears on the leaves or trunk. Can something as simple as the brief drought we’ve had cause this? Severe ones over the years never have. See pics following. Thank you.