Maintenance of space in the tree lawns or tree wells (space between the sidewalk and the street) beyond the tree itself is the responsibility of the adjacent property owner. Per the Tree Ordinance, plantings are allowed in this area as long as they are below 12 inches in height (grass, groundcover, mulch, etc.). Any plantings beyond trees in this space that is above 12 inches in height or that will cause trip hazards. (i.e. boulders, signs) is prohibited per the ordinance. The main reason for this restriction is to ensure easy access to and from parked cars as well as ensure safety for the public.