serious questions for cats w/ htiq:
i have 6 maples in a row going down a hill. there's probably 20 feet of elevation change at most from the top tree to the bottom tree. for some reason, every year the tree at the top changes colors first, then the next tree, and so on. on the back of the house there are other maples further downhill that haven't even started to change yet. why do they change in that order? do the trees at the top get more or less water or something?