For the first time that I can recall during the last 21 years, we are mowing putting greens in December! The mornings have been cold but afternoons have been relatively mild, which has been encouraging the greens to put on a little top growth. Some greens like #8, which sit in low pockets and are protected from wind and other elements, are still as green as they were in October. The mild days have been very nice for getting work done on the golf course, but it isn't the best case scenario for our putting greens. This won't cause any harm to the greens but we are definitely keeping our eye on them for potential cool season diseases. I'm hoping the weather turns much cooler soon, so the greens can go dormant for the winter. Today, we are knock off the little bit of top growth by mowing them at 0.135" with our triplex. As a reference point, our in-season mowing height of cut is 0.115".