I have been using a nitrogen winterizer of about 1#/k but I have struggled a little bit to get the timing down. Too early and supposedly I promote too much top growth. Too late and it might be a waste. I want to run my business honestly. Most of my winterizing is done, but I am wondering if some of the most recent ones I have done are a waste and I am reluctant to do any more. In central/upper IL the soil temps under 4" of sod are now down to about 35. The ground had some frost in it from some of the cold snaps we have had earlier, but I think with 50 today, that little frost may be gone. Today (Sat) thru Wed it looks like 40s (& even up to 50 Wed) with lows around 30... but Thursday on it gets colder and for about the next 2 weeks we get highs around freezing and lows in the teens. After that is Christmas week where highs are 'predicted' for the 40s a few days but we may be already frozen solid. The last moderate rain was about the 21st of Nov, with maybe a very slight amount since. ... Like I was wondering, have any of the late fertilizations done any good? ... and I am thinking I should just stop the Urea apps now as they might not do alot of good. any thoughts?