In 2007, lotholders planted a Memorial Garden to beautify the grounds. The Memorial Garden was transplanted in 2009 to form the basis of a new Memorial Grove. The Memorial Grove was planted against the northern boundary of the burial grounds to help conceal Prospect Hill's and Glenwood Cemetery's maintenance yards. The Memorial Grove was a gift from District 1 of the National Capital Area Garden Clubs, and was completed in September 2009. During preparation of the ground, Prospect Hill Cemetery discovered that the District of Columbia Water and Sewer Authority (DCWASA) had installed a water line through the northern part of the cemetery in 1896. Although the cemetery provided DCWASA with an easement for the water line, these records were lost. The line was located and marked. A sculpted stone angel, which years ago had fallen from a century-old grave, was installed on a foundation in the center of the grove.