My neighbors and I planted three Autumn Blaze Maple trees - we call them the triplets - on an inner city street in Boston ,the City would not, and they have been incredibly successful. They have grown at least the three feet in height as hoped, they have survived abuse via parked cars, inconsiderate pedestrians, snow, and ,other than rainfall, erratic watering. While two are significantly bigger than the remaining one, they are all hardy and are doing well.