|'Plena' is a low-growing cultivar, bearing small heart-shaped leaves and clusters of tiny double bellflowers in midnight blue-violet. Vast group of plants in a wide variety of shapes and sizes. Handsome blooms, typically bell-shaped, blue flower from spring to fall. Leaves at base of plant are larger and broader than stem leaves.
Uses for campanulas are as diverse as the varieties available. Showcase smaller varieties where they may be appreciated - in rock niches, close to a path. Trailing species make great ground covers and hanging baskets. Upright species should be planted in sweeping drifts in the perennial border or naturalized under trees. These spring to fall flowering beauties prefer rich, well drained soil and full to partial sun.