Hello, I have a volunteer tree/bush that sprouted in my yard last year with a clumping habit. It has grown very rapidly. I have never seen any flowers, buds, catkins, or fruit of any kind on this. I'm in Medford, OR in the Rogue Valley. If invasive, I really want to get rid of it. I've narrowed it to possibly some type of willow or black cherry. Thanks in advance!