Marsh grasses are commonly found in salt marshes, thriving in saline, waterlogged environments.

Marsh grasses, such as Spartina alterniflora (smooth cordgrass) and Spartina patens (saltmeadow cordgrass), are the dominant vegetation in salt marshes. These plants are highly adapted to saline and waterlogged conditions, often found along coastlines and estuaries. Their strong root systems stabilize soil and prevent erosion, while their above-ground structures provide shelter for various wildlife. Marsh grasses also play a crucial role in filtering pollutants and supporting coastal ecosystems by producing organic material that feeds marine life. Unlike seagrasses, which grow submerged in water, or mangroves and pine trees, marsh grasses thrive in intertidal zones.