Cladium faux-mariscus

NatureServe (2014) describe the following threats: The principal threat to this species is the destruction of its wetland habitats, but this species occurs in a fairly wide variety of wetlands. Specific threats include the development of wetlands; drainage of wetlands for agriculture and conversion to pasture; peat mining; successional overgrowth of habitat by woody species; and invasion by exotic plant species, such as purple loosestrife (Lythrum salicaria) and common loosestrife (Lysimachia vulgaris). Highly threatened by sedimentation, land use conversion, habitat fragmentation, and forest management practices. However they do not consider the species to be threatened at a national and therefore global level.

NatureServe (2014) provide the following conservation status for this species: Critically imperiled: Saskatchewan, Kentucky, Mississsippi, Alabama, South Carolina, Florida, Newfoundland; Imperiled: Manitoba, Pennsylvania, Vermont; Vulnerable: Minnesota, Illinois, Ohio, Virginia, North Carolina, Quebec, New Brunswick; Apparently secure: Delaware, Maryland; Secure: Ontario, New York, New Jersey, Nova Scotia.
This species probably occurs in protected lands in many states within its range. Documented from North Carolina (Bluff Mountain and Long Hope Valley Preserves, Lake Waccamaw State Lake Restricted Natural Area and State Park) and Minnesota (Lost River Peatland, Pine Creek Peatland, and Red Lake Peatland State Natural Areas, Spring Creek and Waubun Wildlife Management Areas, Pine Island and Koochiching State Forests) NatureServe (2014)