That's sunscald. My cherries, roses, and the new growth on my citrus all were hit pretty hard by that 110 degree day on Monday. Lots of blackening leaves. The Asian pear (My 20th century is still young and has no fruit) should bounce back for now but I see you haven't whitewashed the trunk. Coating the trunk with a mixture of 50/50 water and interior light colored latex paint will protect the fragile bark from the sun which can eventually kill many of the fruit trees we grow.

Thank you! Our camellia was also hit and many of the leaves are scorched. We are still new at fruit tree care since we just moved to this house which came with the Asian pear and other fruit trees. I'll whitewash the trunk. Do we have to do the same with a Fuji apple? What about a peach and a Santa Rosa plum? The peach and plum have a lot of leaves and the trunks are in shade.

I've done all of my stone and pome (Apple) fruit trees as that is what the grower recommended. I used a paint brush for small jobs of 8 young trees or so, and a spray bottle for when doing all of my trees. I also just did the trunks and when the new branches grew out, I left them as is. Dave Wilson nursery who may have originally grown your trees recommends whitewashing for all fruit trees. Tree painting