Hi cis4elk,
Last year here, a nursery had some persimmon trees by October still in stock and they had fruits. They had spent all summer at that place in their pots with drip irrigation.
The pots were something like 3gallons/12liters I guess . So not that big. But the fruits were smaller and the trees were obviously suffering.
They needed up potted or go to the ground I guess. The trees were already damn high, more than 2meters/7' - go fetch that with a normal car ...
Here they grow those trees with a canopy starting at 1,5m/5' . I'm still hunting for one persimmon tree with a canopy at 1m/3' .
Once I find it, I'll get it I guess ...
@brooklynmatty: lime on the trunk would be my way to go. That or something else, but I got rid of the fig-moth/fig-caterpillar after I white washed the trunks of my fig trees.
"Help yourself, and HE shall help you ..." So for me, I still think it was the lime on the trunks avoiding the insects to climb on the trunk and getting to the leaves .