What are some good lawn fertilizers for the fall season?

This Old House recommends fertilizer with a 20-8-8 mix of nitrogen, phosphorus and potassium respectively for September and a 13-25-12 boost in late October or early November, so check the fertilizer label. The latter mix ensures that the lawn has enough phosphorus to achieve good root growth before winter.

Opinion is split about whether a special winterizer fertilizer is preferable to an ordinary but properly balanced fertilizer. However, most gardening experts agree that, whether using winterizer or normal fertilizer, fall fertilization is the most important of the year because it provides the necessary nutrients for grass to survive the winter.