Potting Trees

Question

Should you put plastic containers in the bottom of a large pot you are planting a tree in to keep the pot lighter, or does that leave too much air space and leave the tree more likely to freeze?

Answer 1

No, this is not necessary, though it won't hurt either. These articles will help with growing potted trees: https://www.gardeningknowhow.com/ornamental/trees/tgen/growing-trees-in-containers.htm
https://www.gardeningknowhow.com/special/containers/how-to-grow-container-trees.htm