Garden design by carolyn mullet: Plant stairs with succulents - this actually works very well, the succulents thrive on the heat from the stone in summer. If you periodically wash the stairs off with a hose, that's enough water for the plants.
Creeping Thyme (thymus) in pathway stone pavers in drought tolerant California xeriscape garden with oak trees. Old Hat - I grow creeping red thyme in my garden in the UK. My bunnies love it and it tastes great in chicken jambalaya!
Glorious pink Astilbe flowers at Marwood Hill Gardens, Devon - Dr Smart's garden is set in a beautiful and sheltered valley with lots of well established plants and trees. A café and plant shop are on the site too.