Heart shaped green leaves with clusters of blue flowers borne on a spike. A tall, late flowering structural plant. It is free flowering and slowly grows into a large clump. Little maintenance is required. Trim just above the water surface after foliage has died back in autumn to tidy. Flowers July September. Minimum height 70cm maximum height 90cm. Minimum depth 10cm maximum depth 20cm. Medium growth rate. RHS Award of Garden Merit winner. Supplied in a litre pot.
