In 2010 my first year of planting stratified seed - I planted some in the fall and thru early and late winter, up to the Feb timframe.
Here in Southern Middle TN, the ground is real nice for planting in Jan/Feb, especially after a snow or freeze and thaw.
But that next spring I found that I did not have much luck with what I planted past about December.
Not sure if it was the time of planting or the quality of seed. In Jan/Feb the seed I planted was from a different source than the first so it could have just been the seed source - or getting seeds later in the year after they had been stored a while (improperly), or some of it could have been green seed (did not know enough about how to check for that yet).
This past fall 2011, I planted all of mine (3 lbs) in October, mostly the last 2-3 weeks of October.
I thought about doing more this winter, but never got past thinking about it.
So I guess you could call me, or at least I seem to be leaning towards a fall planter at this point.
If I ever get to where I just want to plant a lot more seed, I could see going at it thru October, November and December - or even longer if I wanted.
Before I did a lot more late winter/spring planting I would want to try some seed I knew was good and see how it does.
TNhunter