I am planning to plant Blueberries next spring and want to get the raised bed(s) ready this fall. How wide does it need to be? Would 3 feet be wide enough or should it be 4 feet wide? How long does it need to be per plant? Would it be better to make one raised bed per plant? Would a 3 foot square be big enough? I am thinking of standard sized bushes. Will adding lots of peat moss to acidify the soil be good enough? How much would I have to add? I realize I will have to check the pH to make sure that it is right for blueberries. Any advice is greatly appreciated.