PLANTS TO GROW
Water lily (Nymphaea species)
Apart from its attractiveness, the water lily plays a crucial role in the aquatic eco-system, providing shade and shelter for frogs and toads. It also lowers the water temperature for fish and helps to prevent the formation of algae which can cloud open water in summer.
Water Iris (Iris species)
One of our best-loved marginals. Includes: Iris sibirica (blue and elegant) and I. pseudacorus, our native yellow flag iris (yellow and robust).
Marsh marigold (Caltha Palustris)
Sunny golden cups in late spring.
Ragged robin (Lychnis flos-cuculi)
Native marsh-loving plant, great for damp places including pond banks.
Bog bean (Menyanthes trifoliata)
So-called because its foliage is said to resemble that of a broad bean. Has starry white-fringed flowers in spring.
Less glamorous but essential for a wildlife pond, this group of plants adds oxygen to the water as well as providing a food source for tiny pond creatures: Water Milfoil (Myriophyllum spicatum) Water starwort (Callitriche stagnalis) Curled pondweed (Potamogeton crispus) Rigid hornwort (Ceratophyllum demersum)
…AND PLANTS TO AVOID LIKE THE PLAGUE!
Steer clear of these plants, which are far too invasive for most ponds, although they are still found on sale: Floating pennywort (Hydrocotyle ranunculoides) Parrots feather (Myriophyllum aquaticum) Canadian pondweed (Elodia canadensis) Australian swamp stonecrop (Crassula helmsii) Water fern (Azolla filiculoides) Green seafingers (Codium fragile) Curly waterweed (Lagarosiphon major)