• Atlantic Ocean beach at Cape Cod National Seashore

    Cape Cod

    National Seashore Massachusetts

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  • Sections of Boardwalk Closed at Red Maple Swamp Trail

    Sections of the boardwalk at the Red Maple Swamp Trail have been closed due to structural deterioration and safety concerns. Check at Salt Pond Visitor Center for the current status of this trail, and for your safety, remain out of closed areas.



Hudsonia tomentosa, usually referred to as poverty grass or beach heather, is a plant found among the dune ecosystems of Cape Cod National Seashore.

Photo by Scott Buchanan

Cape Cod National Seashore harbors a diverse array of terrestrial, wetland, aquatic, and marine plants that are uniquely adapted to life in the coastal environment. More than 800 species comprise the vascular flora of the seashore, which are associated with a number of landscape features. For example, heathlands, grasslands, dunes, woodlands, forests, vernal pools, kettle ponds, salt marshes, freshwater marshes, intertidal zones, and seagrass beds are among the different community-types that can be distinguished by their own special kinds of plant life.

Past human activities on Cape Cod have played a major role in shaping the Seashore's vegetation. In fact, land-clearing practices by early European settlers gave rise to the seashore's extensive heathlands - a habitat that has since become globally rare. However, many plant communities within the Seashore are being negatively impacted as a result of human pressures on the environment. Sea-level rise, acid rain, ozone, groundwater withdrawal, nutrient enrichment, and invasions of exotic species are just a few of the threats that pose serious risks to plant diversity and ecological function across the landscape.

The Seashore is currently developing techniques to effectively monitor plant communities and determine how they are changing in time and space. Armed with this kind of information, we can then devise well-informed management strategies that will help protect these resources.

Plant Related Reports and Documents

Did You Know?

Wellfleet kettle ponds

Although the kettle ponds within Cape Cod National Seashore are within 2.5 km of the ocean and have been subjected to thousands of years of salt spray, they remain low in dissolved salts. Ponds are flushed out by inflowing and outflowing groundwater, which prevents salts from accumulating.