I have a bermuda lawn that is 3 years old. I have almost completely gotten rid of all of the crabgrass by pulling it. Now I have lots of prostrate spurge, way too much to pull. My neighbors tell me that I will also have a problem in the winter months with poa annua. I have purchased a Hiyield weed and grass killer with dimension .125%. I have been told to apply it now at 5lbs/1000 ft2 and then again in early March. I am in central Alabama with our first good freeze expected within the next 3 weeks and the last freeze is usually in early April. Any advice would be greatly appreciated.