After browsing through several old threads with the Search Tool, I see that there is some confusion about when is a proper time to do a Trunk Chop on a Trident, or any maple... #1) Chop at repotting time, when buds are swelling. #2) Chop after leaves have hardened off. My thoughts / questions: I would be concerned about excessive sap flow when chopping a maple trunk.....so maybe way #2 is better for that reason. I would also be concerned with the amount of time left in the growing season to really recover from a trunk chop....so maybe way #1 is better for that reason. I think earlier is better because it gives the tree more time to establish a new leader, and begin healing the chop. Since my reason for chopping is to create a new leader and build the trunk, I think way #1 is the way for me. Any thoughts? Should I have different concerns? Are there more reasons that chopping later may be a better way? Any maple trunk chop experiences you'd like to share?