Noted for its compact growth, fragrance and very full flowers, Phlox divaricata 'Blue Moon' (Woodland Phlox) is a semi-evergreen herbaceous perennial florming a handsome mat of rich blue-violet flowers in mid to late spring. Each fragrant, saucer-shaped flower features five, flat, overlapping petals. Borne is loose clusters at the tip of hairy and sticky stems, they rise enthusiastically above the lance-shaped deep green foliage.