It's that time of year again for fall fertilizing . As most homeowners know, it's not enough to fertilize lawns just in the spring. The farther north of the Mason-Dixon line you live, the more important it is to fertilize right now. Why? Because fertilizing helps the grass establish healthy roots that actually keep growing during all but the coldest periods. (Remember, the healthier the root system, the healthier the lawn and the less chance weeds have to pop up.)
In the fall, you need a different fertilizer than in springtime, so make sure to hit your lawn with a mix that has 1 part nitrogen to two parts each of phosphorus and potassium. In September, do a major fertilizing. Then follow it up with a "booster shot" of the same mix shortly before the real cold weather hits your area.