I have been lurking around here for a few months and have researched this subject for a while but really have not. found a straight answer. Please tell me if I'm right... Fertilize in late september to keep grass green longer, again in late October after growth has slowed then another around thanksgiving. I overseeded in late September (fescue by the way) then fertilized with 17-17-17 a month later. Now my lawn looks really great and I don't want to ruin it by over fertilizing. My grass has pretty much stopped growing now been a week since I mowed last and it's hardly grown. This seems like a good time to fertilize again but I want to wait till someone with a little more knowledge tells me to. Thanks ahead and sorry for the rambling post.