Planting around sunken circle seeded with Erigeron karvinskianus includes Panicum 'North Wind', Echinacea purpurea, Helenium 'Waldtraut', Stipa gigantea, Calamagrostis x acutiflora 'Karl Foerster', bronze fennel behind. Broughton Buildings, Broughton, nr Stockbridge, Hants, UK