The application of mulch around trees reduces environmental stress by providing a stable root environment. Proper mulch application conserves soil moisture, soil temperature, and helps to reduce weeds and grass from growing near trees. Mulch can also prevent mechanical damage to trees by keeping lawnmowers and weed whackers away from the base of a tree.
Mulch can be ordered in a variety of colors including brown, black, and red or could consist of composted wood chips or other organic material. It should be spread to a thickness of 2”-4” and cover as much of the root system of a tree as possible. Plastic should not be installed as a weed preventative because it will restrict the movement of water and oxygen to the roots of a tree. Mulch volcanoes, or piles, should also be avoided because they can cause rot or bark suffocation. Care should also be given to ensure that mulch is not directly applied next to the trunk of a tree to ensure that the root collar remains visible.