Our block of flats now has a shared garden on the roof, and I am not completely sure about it. It opened last autumn, and neighbours grow herbs, tomatoes and small flowers in wooden boxes. The view is pleasant, especially after work, when the evening light falls on the plants.
I support the idea, but I do not think it is perfect. The garden makes people talk, which is rare in a big building. However, watering and general maintenance can be difficult for older residents, and some visitors leave cups near the benches. In my opinion, the committee should organise a simple rota and add more bins.
Still, the roof feels friendlier than before. A garden above the city does not solve every problem, but it gives neighbours a reason to meet and share responsibility.