This is in answer to Toni's question about how the leaves of Callisia differ when grown in the sun. Well, to begin with, keep in mind that I am partially color blind, but the leaves look as follows: The leaves have what I call a (maroon?) blush along the edges and down the center of the leaf. The leaves also seem to be somewhat thicker than the ones grown in more shaded areas. They actually look more like a Bromeliad when grown like this. Love them either way!

Oenothera, Evening Primrose? WW Here is a link that might be useful: Evening Primrose

Looks like Horseweed. Here is a link that might be useful: Conyza canadensis

Not sure. Maybe Ohio Spiderwort?