What is a tree pit guard or grate?
Tree pit guards are the low metal fences around a tree pit that can protect trees from damage caused by car doors, bumpers, and other types of street and sidewalk traffic. Guards also protect the soil by providing a barrier to foot traffic and discouraging dogs from depositing waste in tree pits. Tree grates are metal contraptions that cover tree pits. Parks & Recreation no longer allows the use of these because when the tree reaches a certain size, the grate can strangle the tree and kill it.
