If you are looking for a perennial for an area with low rainfall and dry soils euphorbia x martinii 39ascot rainbow39 is a great choice due to its strong drought tolerance the vibrant foliage has a pink tinge in winter and in spring it has small chartreuse green flowers with dark centres near the tip of each stem an ideal plant for small garden borders or as a groundcover plant in larger gardens if planted in groups particularly suitable for gardens with a contemporary style or o