The weight of a Christmas tree can vary depending on its size and species. Typically, a small to medium-sized tree weighs between 10 and 20 pounds, while a larger tree can weigh up to 100 pounds or more. It's also important to consider the type of tree, as some species, like Douglas firs, can be quite heavy due to their dense branches and thick needles. So, in short, it depends on the tree's size and species.