Arbor Day, yes to plant trees where no trees grew before. I wouldn't be surprised if after this conversation our NE Cornhusker friend, decided to go big time Arbor day and start planting Sweet Gums everywhere, and his future cannon crop.
You don't want one in your yard. They drop thousands of 1 1/4" prickly gum balls.
They make a huge mess!
The balls float in the pool for one day, then they sink.
I have one in the back yard and another giant one on the side of my house.