The possibilities are endless...

Check into the Winter Sowing forum for easy methods....

Here is a link that might be useful: Winter Sowing Forum

I know about the winter sowing forum. That is mainly for planting seeds in the winter to put out in the spring. I am asking what seeds I can put IN THE GROUND NOW. Any suggestions?

The only thing I can think of are seeds of plants that usually self-seed in summer or fall, like varieties of salvia, BES, cleome - you get the idea - seeds that are known to winter over. Might take some research, but the good news is anything you can collect from plants now should work.

I have great luck with foxglove and lady's mantle in my part shade garden. They both self seed. But since they drop most of their seed earlier in the summer, seedlings are already established by now. If you lay down seed now, you may find any that germinate now might not make it through the winter. Some seed may lay dormant for spring sprouting. But then that is pretty much the same as winter sowing, except that you are not protecting with a container.

A couple of self-sowers that germinate in spring for me are Nigella and annual poppies. Gilea (sp) is another one. That's a bi-ennial. Those three prefer more sun. A perennial that self-sows for me is Jack-in-the-pulpit.