Marshes are a type of wetland ecosystem where water covers the ground for long periods of time. Marshes are dominated by herbaceous plants, such as grasses, reeds, and sedges. ... Unlike swamps, which are dominated by trees, marshes are usually treeless and dominated by grasses and other herbaceous plants.

What is the most common plant in the marsh?

Marshes can often be found at the edges of lakes and streams, where they form a transition between the aquatic and terrestrial ecosystems. They are often dominated by grasses, rushes or reeds. If woody plants are present they tend to be low-growing shrubs, and then sometimes called carrs.

What plants are in a freshwater marsh?

Freshwater marshes have a lengthy growing season and contain high nutrient levels in the water and substrate, which contribute to an overall high net primary production. Some of the most common plants in these areas are cattails, water lilies, arrowheads, and rushes.