Solar Garden border at Great Dixter, a house in Northiam, East Sussex, England - photo by Jonathan Buckley; Allium hollandicum ‘Purple Sensation’ with Campanula patula and Erysimum allionii in the Solar garden at Great Dixter
Red Stonecrop (Sedum Spurium 'Schorbuser Blut') Zone: 3 to is a very attractive border plant that does not mind the shade and can be used as ground cover under trees and shrubs. Another advantage of these plants is that they suppress the growth of weeds.
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