Cultivar
'Purpurea'
This is a semi-herbaceous stoloniferous perennial grows to 200 mm (7¾ in) tall by 2 m (6 ft) wide with purplish green foliage and forms a clump. From early spring to late summer it produces small purple flowers above the foliage and grows in an open sunny to partially shaded position in well-drained organic rich moist soils, and is ph adaptable.
It is planted in smaller cottage gardens and mediterranean settings as a ground cover or for edging and between pavers. It grows in USDA zones 8-10