State-rare fringe-tipped gentian.
Selinger Marsh State-rare fringe-tipped gentian. © Alden Warner

Places We Protect

Selinger Marsh

Maryland / DC

Explore an unusual wetland in an otherwise dry region.

COVID-19 Update (June 3, 2020)

TNC’s public preserves in Maryland remain open. We ask all visitors to observe our preserve access guidelines and follow current health and safety precautions, including guidance from the Maryland Department of Health and the Centers for Disease Control (CDC), including maintaining a distance of at least 6 feet from others (social distancing).

Parking may be limited at many of our preserves. If parking areas are full, please plan to return to the preserve another day.

Thank you for helping us in our efforts to protect our visitors’ health and well-being.


Selinger Marsh lies in the rain shadow of the Appalachian Mountains — this area receives the least rainfall in Maryland. Springs on the surrounding slopes provide the water for the marsh, making it an unusual wetland in a otherwise very dry region. This area was selected for conservation for that reason.

Its importance as a breeding ground for amphibians makes the site a priority in order to maintain viable populations of these species in this part of Maryland. It has been protected by TNC since 1985.

There are no facilities, trails, or established parking areas at this preserve.

The preserve is small, but the watershed is completely protected and provides an important breeding ground for amphibians, including the upland chorus frog and Jefferson salamander.

Fringe-tipped gentian (Gentiana andrewsii) is a rare plant species in Maryland that grows here. Other wetland plants include arrowhead, monkey-flower, and cardinal flower. The wetland opening is surrounded by a dense stand of silky dogwood, alder, and elderberry. 

WHAT TO SEE: PLANTS

  • State-rare fringe-tipped gentian
  • Arrowhead, monkey-flower, cardinal flower, New England aster, great blue lobelia, water plantain, blue flag, silky dogwood, alder, and elderberry

What to see: animals

  • Upland chorus frog
  • Jefferson salamander
Selinger Marsh
Explore an unusual wetland in an otherwise dry region of Maryland.

SELINGER MARSH An unusual wetland in a otherwise very dry region.

Resources: Maps & Trail Guides