More often than not, trees are neglected and left on their own to grow. Trees grow naturally in the wild all the time. But, it is absolutely necessary to maintain trees in a residential setting. Proper standards of care for trees surrounding homes, whether urban or rural, ensure health, size, and safety as trees mature. Please take the time to look at the following link from the Arbor Day Foundation. It is a great resource to consider from the moment trees are planted.