When you have a live tree, it's important to take care of it and keep it alive so that you can enjoy its beauty and fragrance for the duration of the holiday season. Here are a few tips to help you keep your live Christmas tree alive: 1. Water the tree regularly. Live trees need water to stay healthy and hydrated, so it's important to make sure you're giving it enough. Water the tree daily or every other day, depending on how dry your home is. You should also make sure to use a tree stand that holds enough water to keep the tree hydrated.