I would reccomend getting your ph right to start with. That type of seed is very expensive, and alfalfa is very difficult to grow. So, rather than take a chance wasting your time and money get it right the first time. You may get a decent crop, but then again you may have to start all over in the spring. Go here and find out what you need to know about alfalfa: http://www.americasalfalfa.com/alfalfau.htm