They have attractive foliage and flowers and a long bloom period. Hardy geraniums are happy just about anywhere in the garden that you choose to plant them - in sun or shade, acid or alkaline soil, and formal or informal borders or beds. Geraniums can be chosen to fit gardens of any size as plant size ranges from 5 to 6 inches high to varieties that can be up to 3 feet tall.
Geraniums make excellent ground covers and also work well as edgings or in borders.
Hardy geraniums complement roses nicely as their bloom periods coincide and the geranium foliage hides the roses' bare legs. Hardy geraniums bloom profusely in varying shades of white, pink, blue, violet, purple and magenta. It is easy to choose varieties to ensure bloom color from early spring until autumn frost. Geraniums have wonderful foliage and I grow several types just for the foliage. Leaves are tremendously diverse in shape, size, and shades of green.