The Brotherhood Sister Sol are the caretakers of the NYC Parks Department Green Thumb Frank White Memorial Garden located adjacent to their headquarters and have been responsible for developing the 6,000 sq/ft lot into a Environmental Learning Center that includes a functional Urban Farm (producing more than 35 varieties of fruits and vegetables), a green house, an aquaponics system, a group challenge course, as well as recreational seating and performing areas. All of these features have been co-designed and constructed by their youth members and local community residents. It is the most used Green Thumb Garden in the borough of Manhattan.