Plants & Trees

Also known as longleaf pondweed, American pondweed is a rooted, perennial herb that has both submerged and floating leaves.

Similar to hydrilla in appearance and growth, Brazilian waterweed is recognizable by its stem and whorls of two to six small leaves. Generally, it can be found drifting or rooted at depths of 20 feet or less.

Common waterweed is a bay grass that grows in slow-moving fresh waters throughout the Chesapeake Bay watershed.

Coontail is a bushy-looking bay grass with whorls of stiff, forked leaves along densely branched stems. It grows mostly in quiet freshwater areas such as the upper Chesapeake Bay and rivers, streams, lakes and ponds throughout the Bay watershed.

Curly pondweed is a bay grass with broad, curly leaves along flat, branched stems. It grows in fresh non-tidal to slightly brackish tidal waters throughout the Chesapeake Bay watershed.

Eelgrass is a bay grass with long, ribbon-like leaves. It grows in the saltier waters of the middle and lower Chesapeake Bay.

Eurasian watermilfoil is a bay grass with whorls of feathery leaves along long, branching stems. It grows in quiet fresh and slightly brackish waters throughout the Chesapeake Bay watershed.

Horned pondweed is a bay grass with long, thread-like leaves and distinctive horned seeds in spring. It grows in fresh and medium-salinity tidal waters of the Chesapeake Bay and its rivers.

Hydrilla is a nonnative underwater grass that grows in freshwater portions of the Chesapeake Bay and most of its tributaries.

Naiads are bay grasses with short, narrow leaves along slender, branching stems. They grow in non-tidal fresh waters and fresh and brackish tidal portions of the Chesapeake Bay and its rivers.

Phragmites is a non-native, invasive perennial plant that grows in wetlands and along roadsides and shorelines throughout the Chesapeake Bay watershed.

Redhead grass is a bay grass with flat, oval leaves that wrap around the base of straight, slender stems. It grows in fresh to moderately brackish tidal waters in the Maryland portion of the Chesapeake Bay watershed.

This perennial submerged aquatic grass can be found in slow-flowing waters that are 3 to 7 feet deep. Its buoyant leaves are identifiable by their light-colored center stripe. It produces small, green-brown flowers.

Sago pondweed is a bay grass with bushy clusters of thread-like leaves that grow alternately along slender, branching stems. It grows in fresh to moderately brackish waters throughout the Chesapeake Bay watershed.

Saltmeadow cordgrass is a native perennial grass with wiry leaves that often form a whorled pattern. It grows in high, irregularly flooded areas of salt and brackish marshes along the Chesapeake Bay.

Shoal grass is a perennial submerged aquatic herb that resembles land grass and is usually found in waters up to 40 feet deep. Although it can be found around the world, it grows predominantly throughout the southern United States and South America.

Slender pondweed is a bay grass with long, thin, grass-like leaves along slender, branching stems. It grows in quiet, fresh to slightly brackish creeks, rivers and other tidal tributaries throughout the Chesapeake Bay watershed.

Smooth cordgrass is a native perennial grass with flat, blade-like leaves. It grows in low-lying, salt and brackish tidal marshes along the shores of the middle and lower Chesapeake Bay.

Water stargrass is a bay grass with long, grass-like leaves and distinctive yellow, star-like flowers along freely branching stems. It grows in the fresh waters of the upper Chesapeake Bay and tributaries throughout the Bay watershed.

Water starwort is a bay grass with bright green, egg-shaped leaves that float on the surface of the water. It grows in quiet fresh waters throughout the Chesapeake Bay watershed.

Widgeon grass is a bay grass with delicate, thread-like leaves that grow alternately along slender, branching stems. It ranges from slightly brackish upper and middle Chesapeake Bay rivers to the saltier lower Bay.

Wild celery is a bay grass with long, ribbon-like leaves that have a light green stripe running down the center. It grows in fresh and slightly brackish waters throughout the Chesapeake Bay watershed.

Wild rice is a native annual grass with feathery flowers on top of a tall, round stem. It grows in freshwater marshes throughout the Chesapeake Bay region.