Mixed fountain grasses plus pee gee hydrangea, white echinacea ("White Swan"), plus possibly some oak leaf or Annabelle, plus possibly low white carpet rose. Maybe add Icicle White Veronica or similar. Do Russian sage and grasses near steps.
Mexican fleabane Erigeron karvinskianus - this pretty daisy makes a perfect edging plant for borders and paths and is a must-have for a wildlife friendly-garden (very popular with bees and butterflies)
tufted hair grass - ■Position: full sun or partial shade ■Soil: dry to moist, neutral to acid soil ■Rate of growth: average to fast-growing ■Flowering period: June to August ■ Flower colour: bright silvery yellow ■Hardiness: fully hardy