The JC Department of Public Works, Division of Parks and Forestry is doing their tree planting program again for this fall. Call them at tel: 201-547-4449 to request an application form -- the deadline is September 28, and plantings will be in October and November.
The city will make the tree pit on the sidewalk in front of your property if there isn't one already, and plant the tree of your choice for a small fee. You may mark your preferred spot on the sidewalk in chalk and they will oblige as long as there are no obstructing water/sewer lines or anything else important.
A neighbor counted over 120 open tree pits from Newark to 10th between Grove and Coles Streets, not including the ones that have been filled in with cement, bricks or asphalt, nor the pits tha t contain dead or dying trees. If you have an empty tree pit in front of your property, please consider filling it with a new tree.