Yes, it is still a good idea to fertilize with Winter Survival Fall Lawn Food. Winter Survival’s high potassium formula will help grass plants ward off diseases during cold months. Potassium is drawn into the plant by the roots and stored for use throughout the winter. 

Many states have laws prohibiting the application of lawn fertilizer after a certain date in the fall. Be sure to check your local and state government websites for possible blackout dates in your area.