Rock Cress
Zone 3
Forms a dense cushion of evergreen foliage smothered with brilliant, deep blue flowers from early to late spring. It is the perfect companion for spring bulbs and primroses. This easy to grow perennial can be used in the rock garden, border or along a pathway. Best grown sun to part shade in average to dry, well-drained soil. Cut it back hard after flowering to restore its good looks. HEIGHT: 5-10 cm SPREAD: 40-60cm
1 gallon container size
Image courtesy of Ball Horticultural
