I been reading the different discussions about aeration and I'm still unclear if and when you need to aerate. We built our home in 2006 and finally planted roughly 2 acres of yard last spring. This spring grass came up and the yard looks better that what I was expecting but since its all pretty new growth do I need to aerate, ground is pretty hard I've rolled it a couple of times which I understand now that was problably not a good idea. There are bare spots and I have already fertilized and will be spraying for weeds within the next month or so. Is aeration needed on a yearly basis? If not how often should it be done, when is the best time to....If it is only needed when the yard needs it what should I be looking for. Anything anyone could pass on would be much appreciated.