Campanula rotundifolia, the harebell, is a herbaceous perennial flowering plant in the bellflower family Campanulaceae. Campanula rotundifolia was historically also known by several other names including blawort, hair-bell, lady's thimble, witch's bells, and witch's thimbles.

Campanula rotundifolia is a perennial species of flowering plant, a slender, prostrate to erect herb, spreading by seed and rhizomes. The basal leaves are long-stalked, rounded to heart-shaped, usually slightly toothed. Leaves on the flowering stems are long and narrow and the upper ones are unstemmed. Many flowers are borne on very slender pedicels. The flowers usually have five (occasionally 4, 6 or 7) pale to mid violet-blue petals fused together into a bell shape, about 12-30 mm (15/32-1 3/16 in) long.

Harebells are native to dry, nutrient-poor grassland and heaths. The plant often successfully colonizes cracks in walls or cliff faces and stable dunes.

Type: Hardy perennial

Hardiness zones: 3-8

Height: 20", 50cm

Location: Sun or part shade

Seeds per packet: 50