Got a pecan tree that grew to maturity and ended up bent over at an angle maybe 6' up the trunk. It was a good tree, and produced lots of pecans. A storm came along and the thing broke off the two main branches, maybe 8' up. I hope it grows back. Not sure if they do or not. However, on the assumption it might recover, I'd like to cut approx 2' off the branches where they start crooking over, and end up with an approx 6' high vertical, straight trunk.
Questions being: what time of year should I cut it? And, is it likely to grow back?