Gone to seed and/or wilted and browned off after flowering well ca. Sept.–Oct. (personal observation of wilted old flowers and pers. comm.).
High sand dune, west aspect top slope;
sand heathland, this slope patch slightly retains moist sand, seasonally, throughout the history I have noticed over 30 years, thus not quite dry,
rather slightly moist to summer dry, sand heath;
with this special species occurring here amongst many more plants' spp. here.
Unlike the nearby ca. 9 months of the year much drier, dune top, 3E way dry sand heath hence with some different and special species.