I'm just going off the top of my head, but I'm pretty sure most of the annuals are non-stratification requiring. Put them out any time that's convenient, but they can certainly wait until early spring, if you're busy now. Some large-seeded annuals can rot if they spend too much time in a wet container. If it were me, I'd wait until closer to spring. They are beautiful.

Martha

As docmom said, these don't need the chill and may do better for you if you wait a couple of months (or more) to sow in your Z6....

Here is a link that might be useful: Earlier thread - 4 O'Clocks