The second picture is of an
Asclepias.
This page has a discussion of two similar species
Asclepias tuberosa (butterfly weed) and
A. curassavica. I would guess
A. curassavica but the true test is to pinch off a leaf and see if it has a milky sap or a clear sap. The clear sap indicates A. tuberosa. At least I think I read that page correctly and that is the one.. Harry