There should be a winter gardening forum here, wouldn't you say? Not just winter sowing, but winter vegetable gardening, winter shrub care (some shrubs even bloom in the winter!), winter tree care, snow apples etc.
I have to admit that most of my "winter gardening" is done inside, fooling with things like African violets! (The AV forum has been *hopping* this winter!) But I do manage an occasional round of pruning or overdue mulching!