Can I cut a tree surrounded by summer or should I dawdle till winter? I only cut my trees contained by winter. But my neighbour...

I only cut my trees contained by winter. But my neighbour said that I should do it now. He even call me lazy when I said that I be not going to do it before winter. Who is right? I own a beautiful Japanese maple which I enjoy no intention to kill.
I'm seeing some spit resembling goo on my...
Don't cut until winter. Neighbor requirements to mind his own yard.
What animals put away strawberries (the fruit)?

Building a fire pit within my backyard?
Pruning Japanese Maples
The right cuts reveal a branch pattern that looks fitting with leaves or lacking
by Cass Turnbull

Japanese maples are among the most graceful member of a species noted for its elegance. Yet even hedge-shear maniac pause when it's time to prune these beauty. Some gardeners don't prune them at all, letting them turn into mounds of foliage that resemble Cousin Itt. Others hold such a heavy foot to them that they wind up next to a little orb of foliage on the end of a stick. The most glorious specimens are those that reveal an exquisite branch guide that enhances the outlook with or short foliage. Pruning expert Cass Turnbull explains how to prune upright and laceleaf variety in demand to show off their best features.
What humane of pink bush is this?
Answers:    you can cut limb off of it surrounded by the summer..it will not hurt your tree..that is the single time we ever cut ours