Why do they plant trees next to roads?

Trees are planted along roads and around buildings so that they can cut off sound vibrations produced by vehicle speakers, etc., absorbing them, helping to prevent noise pollution. Roads also increase water runoff and carry nutrients, which can allow a variety of species to thrive on edges (natural fringes). Plants that may not survive elsewhere seize bitumen using the precious additional resources it provides. The Forest Service and other organizations found that strategically planting trees near busy roads can significantly improve air quality.

Individual trees can be fenced by surrounding them with sticks made from small branches of nearby trees.