This will usually cause the roots to go in circles underground after you plant it. After you buy the tree and before you plant it, be sure to constantly add moisture to it. You should always use nitrogen fertilizer during the first segment of the tree s life. Simply follow the instructions on the label in order to find out exactly how much to apply and when to apply it. You should usually start by putting in the proper amount of pesticide, and then top it off with all the water. Now comes the spraying. The goal is to spray the same amount over all the areas. You still don t want to spray so much that enough builds up to drip off of the leaves. Usually you will want to get a ladder so that you can get within spraying distance of all the portions of the tree. Therefore you must always be sure you know which size fruit tree you have (dwarf, semi dwarf, or standard) and how big it will end up being once it is an adult. Dwarf trees need an area with an eight-foot diameter to grow. Semi-dwarf fruit trees can grow up to fifteen feet wide. Standard fruit trees can grow as wide as thirty feet. The ideal soil for growing an orange tree would be fine sand with great drainage. The soil should be deep enough to allow for extensive root development, since the trees are known for reaching monstrous sizes and requiring lots of support from down below. If you have shallow, easily saturated soil then you should either do something to remedy it or move onto a different type of tree. It may seem like a lot of work now, but you want to dig a hole that is twice as wide as the clump, and just a little less deep. After you have dug the hole, line the hole with some compost or fertilizer so that the tree will grow better. After you have done this you should set your fruit tree into the hole, and spread the roots out evenly so that the tree will be strong and stable. If you see any of these, you should immediately chop off the branch it has attached to. If you use branches for mulch usually, don t for this one. This disease can easily re-enter the tree if it is within a certain distance. Almost everyone who has ever maintained a cherry tree has dealt with the Cherry Leaf Spot .