I have seen it listed as moist to on the dry side.
Soil & Site
found groweing in dry; prairies, woods, inland sands
Flowers
1/2 inch flowers, 5 petals in white, pink or lavender, flowers occur in a terminal cluster
Leaves
opposite paired leaves, downy, linear to narrowly lanceolate, sessile, up to 3½" long and ½" across, sparsely distributed along the stem, leaves tend to drop when the plant is stressed
Stems
thin
Roots
tap root
Dimensions
up to 2 feet tall
Propagation
seeds
Misc Facts
Received at 3.5 out of 5 rating by the Mt Cuba Phlox trials. It tended to flop during flowering.
Notes & Reference
#205-Phlox A Natural History and Gardener's Guide (James H. Locklear), #218-Flora of Wisconsin (wisflora.herbarium.wisc.edu), #238-Mt Cuba Center (www.mtcubacenter.org)