This is a really weird thing. On my street both the north and south side of the street have the same trees but the south side - trees all look to be in sad shape. The leaves are all curled up like in the photo where the north side they are flat. The trees are also taller and stronger looking on the north side with more leaves too..... Could it just be less sunlight because the tree is closer to the houses on the south side and therefore the house is blocking some sun during the earlier part of the day before its high in the horizon? I water the tree twice a week and fertilize it every 2 months with some liquid fertilizer (although its a more generic brand). Has not seemed to make much of a difference.... What else can I look for or what can I try to get the tree to be more healthy?