Scotch Heather

Scotch heather (Calluna vulgaris, Ericaceae) is a low-growing broadleaf evergreen shrub from Europe and Asia Minor, the sole species in its genus. It typically reaches 4 to 24 inches tall, forming dense mats of ascending leafy branches. Tiny scale-like leaves are arranged in four ranks along the stems. Small urn-shaped flowers, typically rosy to purplish pink, appear from July through September.

Scotch heather requires acid soil (pH 4.5 to 6.0), preferably sandy and well-drained, in full sun, hardy in Zones 4a to 8b. It tolerates drought once established and handles seashore exposure. Pruning after flowering in spring prevents bare, leggy stems. Root rot is the primary disease concern; scale and spider mites are occasional pests. The species is naturalized and potentially invasive in parts of North America, Australia, and New Zealand. Over 700 cultivars have been documented historically, including 'Firefly,' 'Robert Chapman,' and 'Wickwar Flame,' selected for reddish winter foliage.