Dukweed is aquatic plants found in ponds and in stagnant water. These are plants that can flow freely on the water, having no real foliage, but consisting only of a frod or frods, with one or more roots growing from the bottom, and minute flowers from the top or the edge. Members of the duckweed family are the simplest flowering plants.

    Duckweed do not mormally grow in the rivers, but a drought in the summer of 1999 reduced the flow of water into the Schuylkill River. The reduced flow ioncreased the levels of duckweed nutrients and allowed a duckweed to bloom to accumulate in the channel.

  The types of animals thatc eat this kind of plant is duck, fish, and other living creatures that live in the water, This plant is going to be removing unwanted substances from water. Aquaculturalists find them an inexpensive feed source for fish farming.