Hello, I wonder if anyone has a solution for the fruit drop problem with McIntoshes? My problem is that all the apples drop off my tree well before they are ripe, every year. They have started dropping last week. None of my other trees have dropped any fruit. I know I am late thinning but I have thinned this late in past years and had excellent results (again, from all my other trees).

I have tried about everything I can think of to treat the tree but I have got zero results. None of the direct remedies I have found through searches seem to apply to apples dropping this early, and I haven't done anything other than treating the tree right for 4 years now. I have 3 about 30 year old mature trees within 50 feet of each other (McIntosh, Granny Smith and Gravenstien) and several 8 year old trees from 50 to a few hundred feet away. None have ever had the problem so early or dropped more than a fraction of their fruit. No stress that I can point to, the other trees show no signs of stress, no damage except for some old woodpecker workings like the other two (that seems to have had no effect and it's old damage).

It was overgrown like any neglected tree 8 years ago and I cut the tree back to a perfect umbrella shape over 4 years. As few interior or crossing branches as I feel comfortable leaving. I prune in late winter/early spring, use dormant spray and spray for scab etc. 2 or 3 times before the fruit sets (they are super clean, insect free, except for a touch of scab on interior leaves and fruits). We have excellent pollination (we keep Mason bees) I have thinned them back to a couple apples per cluster and last year maybe 100 for the whole tree for 2 years now. The fruit all drops by mid-summer, in fact it has started dropping last week (it's June 25th). No weird weather, nothing I can point to, but every single fruit drops not even close to being ripe. Last year the last fruits dropped while much smaller than mature fruit and still green, I am guessing early August.