I wondered how and when you do this? Last year I took my little spreader and overseeded just before one of the last snowfalls of spring. I really don't know how effective it was as its an older alfalpha field, and I think the alfalpha grows faster than most of the grass seeds. That being said, I wondered what everyone else does. I have no tractor, but a very nice neighbour has one and will do anything for some of my flowers and a beer or two! lol Thanks!