When is the best time of the year to trim a Japanese Lace Maple tree?

Any time they need it. I have one and trim it all the time, it's beautiful.

Hello Ltc. The best time to prune a Japanese Maple tree is in late summer. But beginners will find it easier to prune when the tree is leafless and dormant in late Fall to midwinter. LIGHT trimming can be done any season except Spring, when sap is rising. Use bypass pruners to cut any branches that are as thick as your middle finger and smaller. Use a pruning saw for larger limbs. And make sure all of your blades are sharp. Work from the bottom up and inside out. Wishing you well with your Japanese Lace Maple.

In Late Summer is the best time.

Really heavy or severe pruning of any plant is best done when the plant is completely dormant. However, that’s not the only time that you can prune Japanese maples,prune anytime they need it and that often ends up being the dead of summer. Doesn’t matter, they love it and they respond well to it. Is it grafted?? be sure to remove all growth below graft line....here's info. great site on puning/care

https://japanesemaplelovers.com/pruning-or-trimming-japanese-maples/