A live Christmas tree is typically found in a nursery or garden center that specializes in selling plants and trees. You can also find live Christmas trees at some grocery stores or department stores during the holiday season. Many towns and cities also host Christmas tree farms, where you can cut down your own tree. Some of these farms may have a wide selection of trees to choose from, including fir, pine, and spruce varieties. Whichever option you choose, it's important to take care of your live Christmas tree properly to ensure it stays healthy and lasts through the holiday season.