My Swamp chestnut oak, Quercus michauxii, and to a lesser degree, other oaks in my yard, are afflicted with this.
All season, as it gets new growth flushes, many of the growing tips wilt and shrivel up. It seems to not matter if it’s wet or dry, hot or cold, sunny or cloudy, or whatever.
It happened last year too, but not as badly. The tree calipered nicely this summer and still managed to grow almost three feet, but this looks bad and disfigures the branch structure. Any ideas?