I fertilize mine with an acidic type fertilizer like the kind you would use on azalea and do it once a week all year on something like this problematic tree. On my regular jbps I stick with the schedule for when and when not to fertilize. If you can get some Boon mix for your JBP that would help significantly although it might keep it drier than you might like in the heat of the summer especially if you have a long time between waterings like you mentioned. Just be cautious with this tree and do nothing except watering and fertilizing for this year.
Where is Hickory Hills located in Illinois?
Where is Hickory Hills located in Illinois?