Geranium macrorrhizum is the perfect plant for that difficult dry shade area. In poor, dry growing situations, it will hug the ground, but in less shady and slightly moister conditions it will reach heights of 30 cm. In either situation, it spreads steadily forming a mat of bright green leaves that when touched release a distinct perfume. In autumn this foliage takes on shades of red and orange. From late spring through summer into autumn the flat purplish pink flowers with protruding stamens are produced in a lavish display.
The foliage is semi-evergreen meaning they only lose their leaves for a very short time when the old leaves fall off, and the new ones are starting. By cutting the plant back as the first flush of flowers diminishes, this can be manipulated so you can have a display of fresh foliage and the second flush of flowering later in the year.
G.macrorrhizum is a particularly effective ground cover in the shade, however, will tolerate most conditions with the foliage size and height increasing with more moisture.