Iris are a clump forming perennials that nowadays tends to get forgotten about. They have lovely strap like green foliage and on upright, sometimes arching stems are beautiful flowers that have mainly 3 petals around the centre sometimes they are even bearded. The name Iris is taken from the Greeks and means rainbow as there are so many different colour variations and varieties. They are easy to grow and tend to like it on the damp side in sun or semi shade. If you choose the right variety they are ideal for ponds as the roots can improve the water by consuming all the nutrient pollution.