Colorado Tree Spade has been transplanting trees in Colorado and across the U.S since 1984. With the largest fleet of tree moving machines in the state, we have a machine for your every need. From a model 34 to the model 124 ( the largest machine available in Colorado) we can transplant trees from 3" in diameter to a diameter of 24". This translates to trees from 3 feet in height to over 30 feet.