Hillside gardening - Think Mediterranean. Many plants of Mediterranean origin make perfect candidates for growing on sunny, dry, rocky slopes. Rosemary (Rosemary officinalis, zones 8 to 10), lavender (Lavendula spp, zones 5 to 9) and sage (salvia spp and cvs, zones 5 to 9) are all good choices.
A low hedge of pink Muhlenbergia capillaris softens the look of the higher plants at the back. Photograph via Hoffman Nursery. Pink Muhly is a common nickname for Muhlenbergia capillaris, which is typically hardy to growing zone 7 and “happily adapts to a range of soils,” notes Hoffman Nursery. Gardenista