It’s not winter yet and this means you cannot afford to put that mower away. While the temperatures might not be very conducive, grass continues to grow albeit at a slower rate compared to summer. As such, you will need to cut it regularly and try to keep it at 2-3 inches high. Leaving it to grow too tall st augustine grass will make it vulnerable to fungal diseases like snow mold. Cutting it too short is also not recommended as it ends up curtailing root growth and ultimately impedes your lawn’s ability to endure dryness and the winter cold. The amount you overseed depends on the type of turfgrass you have in your yard.