tree healing

I have a boxelder tree along my property line that has a massive lean and is cracked 1/2"-1" wide in multiple places on the trunk. I'm going to remove the damaged trunk before it falls and becomes a problem. My question is: The trunk is part of a multi trunk tree. If i remove one or two of the...

Hello, I’ve got what I believe is a sumac tree (correct me if I’m wrong) at the edge of my yard that I’d like to grow into something unique and interesting. It’s been damaged in the past (as you’ll see in the photos) and has only recently begun to sprout new growth. I was trying to clean up...