Phlox ssp.

BONAP's North American Plant Atlas indicates 65 species of Phlox in the U.S. with four species of Phlox native to Iowa.

Two other species (P. paniculata (garden phlox), and P. subulata (moss-pink phlox) are occasionally found to escape cultivation. Neither is a native Iowa species.

Cleft phlox Phlox bifida - Cleft phlox

Cleft phlox Phlox divaricata - Wild blue phlox

Wild sweetwilliam Phlox maculata - Wild sweetwilliam

Cleft phlox Phlox pilosa - Downey phlox