Neighborhood restrictions and the Urban County Code of Ordinances require street trees to have seven feet of clearance over sidewalks and 12 feet over streets. As trees grow, it is important for their health and appearance to keep them limbed up. Some trees need minor limbing-up. Trees that have gone without proper maintenance for years may require the services of a professional tree company. While there is some expense involved in hiring a tree company, proper pruning will result in a stronger, healthier, more attractive tree.

In addition to enhancing a tree's natural beauty and allowing for better views of home and landscape, limbing-up makes it safe for walkers, joggers, bicyclers, children riding school buses, and motorists passing by on sidewalks and streets.

In general, the association may ask homeowners to remove and replace street trees that are missing, damaged, dying, or disfigured.

Newly planted trees require extra care. Deep watering is critical, regardless of the season in which they are planted. Even older trees need deep watering to stay healthy. "Gator Bags" are a convenient way to water trees.