10 low-maintenance perennials for the busy gardener! You can still have beautiful flower beds without spending a lot of time maintaining them. Look at this gorgeous lavender/purple/violet-colored perennial border!
Commonly called Basket of Gold, perennial alyssum makes a wonderful wall or rock garden plant. Every spring it develops masses of cheerful yellow flowers that look terrific tucked between rocks and boulders. - Flower Beds and Gardens