This evergreen groundcover, is frost resistant and fast growing in the sun or semi-shade. It has blue flowers in summer that attract birds and butterflies. It is ideal for wetlands and moist places in the garden. Show them off by mass planting for a dramatic effect. It is also medicinal as the leaves are used as an enema for fever, coughing and internal sores. It is also magical being used as a protective charm. Ideal for small gardens or for pots on a patio. The name is derived from the Latin ‘arista’=a point as the leaves are sharply pointed.