This is a striking perennial that adds vibrant colour from summer to autumn. Its two-toned flowers feature deep purple-blue petals with a contrasting white lower lip, creating a captivating display. The aromatic, dark green foliage releases a pleasant scent when touched. A favourite among bees and butterflies, it enhances wildlife gardens. Hardy to RHS zone H4, it prefers full sun and well-drained soil, growing up to 60 cm tall and 45 cm wide, perfect for borders or containers.
