There are several places you can buy live potted Christmas trees. Many nurseries, garden centers, and home improvement stores will carry a variety of different species, including popular choices like Norway spruce, Douglas fir, and Fraser fir. Additionally, online retailers such as Amazon or Wayfair may have a wider selection to choose from. If you're looking to purchase a tree in person, it's best to check with local stores first to see what they have available. Good luck with your search!