I seeded my 1 acre lot with a bluegrass/fescue/rye blend on July 30th. I also put down a starter fertilizer. With a lot of watering it came in very well. In September I put down a fertilizer heavy in nitrogen. It still hasn't stopped growing. It is very thick. My question is: what should I put down for a winterizer and when should I do it? Should I use something with a weed killer in it? I don't have alot of weeds. There are weeds in a 6,000 foot section, the rest is pretty much weed free. But I know that this can all change in spring. Also, what should I put down in spring and when? Is it safe to use a pre-emergent in spring? Thanks for your help. I have used this site many times while doing my landscaping projects and everyones expertise has been much appreciated.