I`d say Phlox, but I thought P divaricarta is a low growing type, and rather spring flowering.
P amplifolia and P paniculata could both occur in light woodland condition. and there are other tall species that had been hybridized into the garden types.
Not amplifolia (leaves are not right) but could be divaricata (sources I found said it can grow to 18 inches...so Linaria, could still be this one?) It could be divaricata, carolina or paniculata? Prob. carolina because of the blooming time and location. Thank-you everyone!
floral_uk z.8/9 SW UK
agkistrodonOriginal Author
linaria_gw
Iris GW
agkistrodonOriginal Author
Carrie B
floral_uk z.8/9 SW UK