Second tree wouldn't hurt. Others may differ, but I keep them trimmed short-ish and don't lop the lower branches/trunks as that's where the majority of fruit forms, or so it seems. The ones by the front walk and driveway get pruned a little more artfully but that's because they spread out and get in the way.
In my climate I figure if I can nurture one through the first couple winters I'm home free. Pray for a mild winter for the first one, or plan to insulate the youngster if it gets frigid cold. Learned that lesson the hard way with the first couple. But like I said, my spot on the map is dodgy at best for success with these things.
Last edited by gnoahhh; 09/23/20.