Bog Bean/ Water Clover (as already suggested), Giant Marigold, Water Mint (as already suggested), Water Parsnip, Amphibious Bistort, Flowering Rush, Brooklime, Arrow Head, Marsh Marigold, Water Starwort, Water Forget Me Not (as already suggested), Water Violet, Fringed Water Lily, (as it grows to 1ft in height), Tufted Loosestrife and Mares Tail.
