First, you need to determine the type of tree that you want to plant and also where you want to plant it. Then, dig a hole where you find it suitable to plant and put the tree there and cover it with soil up to a certain level. Once you are done with that continue watering your tree until it's fully green. You need to also make sure that it gets some light for it to grow well. Read more tips at http://www.ehow.com/how_2379114_plant-tree.html.