Nothing will finish by august that far north... you are looking at the first week of oct at the earliest. I live down in georgia and my plants started flowering around july 20 and will finish around late sept/ early oct. Look for some indica dominate strains... They handle cold weather alot better than sativas and have a shorter flowering time. I can recommend white widow or blueberry from dutch passion... Flo is also a very good sativa dominate stain which is supposed to have an extremely motivational clear high.... check DP out they know what they are doing and they are quite reliable which is important as well