I was surprised to learn that a river birch could be grown in a container. I would like to know if the tree can stay outside or should it protected somehow during winter months. I live in western NY-Zone 5.
Certified GKH Gardening Expert
Treat plants in containers as though they are growing in one zone lower than your current zone. So, since you live in Zone 5, you will need to find a variety of river birch that survives in Zone 4 in order to grow it in containers outside year round where you live.