Floating Pond Plants:
For Habitat, Food and Beauty
by Filip Tkaczyk
There are many wonderful uses for floating pond plants in your own pond setting. These plants can provide habitat for a wide variety of vertebrate and invertebrate animals, provide diversity and structure in your pond and be pleasing to the eye. I am defining floating plants here as both those that are not rooted and those with floating leaves that are rooted.
Why Floating Pond Plants?
Unlike emergent pond plants the floating pond plants, serve a completely different and yet necessary role in your pond. First, these plants provide habitat for many different creatures. Young fish may seek shelter under the cover of floating plants. Many small invertebrates such as insect larva spend much of their lives on, in or underneath the cover of floating plants. Some species of damselflies and dragonflies require plants such as water lilies to reproduce. They lay their eggs underneath the leaves, or even in the leaf stalks themselves. Floating plants help reduce water loss through evaporation when they cover a large fraction of the water's surface. Different floating plants can also be food for waterfowl, fish and mammals such as muskrats.
Pond Plant Ethics
Remember, when choosing a plant for your pond to practice good ethics and be a responsible steward. Don't introduce invasive species into your pond, especially if it is connected to other wetland areas! Please contact your local department of fish and wildlife for more information on invasive species in your area.
What Species to Choose and Why?
There are a variety of species to choose from, but the following are some of the best, and includes water lilies and lotus though they are not free floating, but include floating parts. The text will list some of the benefits of each species.
- Western water lily, Cow-lily or Spatterdock (Nuphar polysepalum) = large leaves (up to 18” long) cover a lot of surface area, have edible seeds and roots, and beautiful yellow flowers. They provide cover for fish, amphibians and many invertebrate species.
- Fragrant water lily (Nymphaea odorata) = grows abundantly, covers a lot of surface area, flowers are beautiful and fragrant and cultivated varieties come in many colors, native of eastern USA. WARNING! This species is invasive on the west coast, and is even on the noxious weeds list in WA state.
- American lotus (Nelumbo lutea) = leaves can be up to 3 feet across, leaves can be used in cooking, large edible seeds, amazing wildlife food and habitat, large banana sized edible tubers, spectacular and mild scented flowers, grows in warmer parts of the USA.
- Fanwort (Cabomba caroliniana) = like a miniature water lily with floating leaves, but much of the foliage of this floating pond plant is underwater and very feathery and dense, provides habitat for many small insects and baby fish.
- Azolla or water ferns (Azolla sp.) = like miniature floating ferns, usually less than inch across, great food for ducks, can be skimmed off pond and fed to chickens. Be mindful that this plant can be invasive in some areas.
- Duckweed (Spirodela sp.) = tiny plants that look like single leaves with rootlets below, food for ducks, can be skimmed and fed to chickens, forms green mat. This plant can be invasive in some areas.
Whether you have a tiny backyard pond or a large farm pond, floating pond plants can bring many benefits to your water body. They will add aesthetic value, improve wildlife habitat and can even provide food for you and your family.
For more general information on pond plants, check out: Plants for Ponds Article.
Also for more resources, check out the following links:
Water Garden Planting from BBC
Pond Plants Direct
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