Calluna are types of heather.Calluna ‘Twin Girls’ is a compact, mound-forming, evergreen perennial shrub with upright stems bearing tiny, linear, overlapping, mid- to dark green leaves and, from late summer into autumn, long, spike-like racemes of tiny, reddish-pink and white flower buds that do not open. Grow in well-drained, acid soil in sun.Sold in 12cm pot.