With this year�s winter being so mild, what do you think, should I start applying spring weed preventer and fertilizer in Zone 5 now?

I realize it might still get cold in March, however it is above 40 to 50 degrees most of the 2011/2012 winter in central Indiana. We had only few daytime freezing days and I noticed some broadleaf weeds not dying this winter at all. I don�t want to end up with weeds problem this year.

Thanks for your comments