Christmas trees are typically grown from saplings, which are young trees that are less than a year old. The saplings are planted in a nursery or in the ground, where they are watered and cared for until they are strong enough to be transplanted. Once the trees have reached a height of 2-3 meters (6-10 feet), they are cut and brought to the Christmas tree farm, where they are sorted and trimmed to the desired shape and size. Finally, the trees are decorated with ornaments and lights, transforming them into the beautiful holiday symbols we all know and love.