I did some substantial pruning on my multigraft mulberry today, with the goal of shortening it so I can easily pick the fruit… I removed the equivalent of a small tree from the top of the very first successful graft I ever made (three years ago, with duct tape). I get a real kick out of seeing how much that little stick has grown.
I also grafted a few sticks from elsewhere in the yard to it, mostly to test if this a good time to do mulberry grafting. Usually I wait until I see green.