Hi all, Here is yet another tree in my backyard in Edmonton that needs to be identified. It's about 7ft tall, and has small horizontal lines on the branches (see photos). Thanks, Will
American Elm is very common as a boulevard tree in Edmonton; this is likely a seedling (albeit a large one).
As I said before, I'm nearly 99% certain that it's American Elm (Ulmus americana) - they're extremely common boulevard trees in Edmonton. When I lived there, there were 5 big ones along one side of my house, and I was constantly weeding out the little seedlings that popped up in my garden. They looked exactly like what you've got in your photos.