Repost from April of last year, as I am beging to see them sprout with great force along the hiway from Mayflower to Conway.
I am not sure which of the many varieties of Phlox these are, however a quick photo comparison suggests "Blue Phlox" - which is odd, given that these (including the pictures of known Blue Phlox) are all purple. These are wild variety, however, I also see phlox of various hues as a vital part of Arkansas landscape gardens.
Species: P. divaricata
Of note, the flower has a 5 "lobed" Corolla. The lobes are not the same a petals, in that -- if you look at the flower from the back, all five lobes are part of the same funnel shaped "mono-bloom"