Maybe a fake tree is a better idea?
I once tossed a spent Christmas tree in a fire. I was burning trash. It amazed me what happened.
You've probably seen people on TV or in the movies light things things on fire with gasoline. An understatement. Gas is powerful. I found a video of a Christmas tree being ignited. One watered tree vs. one non-watered.
Here's the you tube video.
I have a 4 foot tree that rolls up like a doormat. Mom's idea.