An elegant addition to the pond margin. Position: full sun or partial shade Soil: reliably moist or boggy soil, or aquatic compost Depth of water: 0-15cm Rate of growth: average Flowering period: May to July Hardiness: fully hardy Adding late spring and early summer colour, as well as architectural interest to the edges of a pond or a reliably moist border, this gorgeous iris has been in demand for over 100 years. Its lilac-pink flowers are relatively small, but they form in clusters at the top of the stem, and once a decent sized clump has been established, you will have some to cut for the vase as well. Garden care: To encourage healthy growth of roots, foliage and flowers, feed with a general-purpose or slow-release aquatic fertiliser. Remove yellow or brown leaves to keep the plant healthy and the water clean. Cut water iris to just above the water line in autumn if you live in a cooler part of the country.