I'm right on the edge of 7B and 8 and I wait a bit to sow the annuals that can't take frost at all (zinnias and such). That's because we have so much warm weather in the winter that things typically sprout within two weeks but we also have sudden hard freezes right up until early April. If I sow the tender annuals too early I have sprouts that can't take the cold. I presume that those in colder parts of the country don't have the problem of things sprouting so early and so it's not a problem to go ahead and get the seeds planted.

One big reason I love wintersowing is that it is so much easier than alternate methods. I avoid the hassle of having to cover or move (or worry about) those eager little sprouts by just waiting a while.

I'll probably take the chance and sow the fussbudgets in late March.

Thanks. I have had the other things I WS'ed out a bit over 2 weeks. I don't have any sprouts at all. I guess I will wait till closer to the end of March to WS the annuals.
Thank you.