Some of the plants, such as cordgrass, can also help restore wetlands. Boggy marshes protect and improve water quality, provide fish and wildlife habitats and reduce flood risk. But boggy marshes have been shrinking due to climate change and the practice of draining them to increase the amount of crop land. The seeds from prairie cord grass can be sold to replant wetlands, re-establishing an important habitat for birds, insects, plants and other prairie creatures.