Flowers of Ponds and Streams These are all plants that grow in, or very close to, water. The best place to find all of these is the streams and pools of the Combe Haven valley. Arrowhead Easily recognised by the distinctive arrow-shaped leaves this plant grows along the Combe Haven. The flowers appear in July and August. Yellow Water-lily Another plant that is common along the Combe Haven where the bright yellow flowers grow on stalks that rise well above the surface. Water Forget-me-not One of several common species of Forget-me-not, this one can be found growing in several of our streams. Yellow Iris This very common plant grows on wet ground and is often found at the edge of pools. Water Mint Another flower that is commonly found around the margin of pools, Water Mint smells of mint and is popular with insects.