Phlox pilosa is native to the midwestern and central-southern states of the US, and is rarely seen in gardens. I got seed from Prairie Moon Nursery, a very fine source of seeds and bare roots of native plants. The seed germinates best after exposure to cold. I set a few plants in the "wall" school garden, where they bloomed in their second year and again this year. Phlox pilosa produces masses of fragrant blooms which are much loved by bees and butterflies. It forms dense clumps and grows a couple of feet tall or less. Unlike more common garden phlox, it does not get leaf mildew, at least not thus far. Its only fault is that it tends to flop when it blooms from the weight of the flowers, so it is best to tie it up or place it among other plants that might help support it.