Welcome to the Third Annual Great Marsh Mud Mosey which feature a 5Kish run throughout a very unique private property in Northern Chester County. The race proceeds will be donated to the Great Marsh Institute and ChesCo Search Dogs. Saturday, April 11th, 2026 Sign up here!
Come join us at The Great Marsh Institute on Sunday, April 19th at 8:00 AM for our monthly bird walk. Please RSVP to lori@greatmarshinstitute.org. This will help us to organize and keep groups small. This event is free but donations are always welcome via our Paypal, Venmo, or cash donations at the door.
Calling all artists (and non-artists too)! Sunday, April, 26th the Great Marsh will be open dawn to dusk. Take a self-guided tour to paint, take photos, or simply enjoy the wetlands, woods, and meadows. If you are interested in attending, please RSVP to lori@greatmarshinstitute.org with your name and the time you plan to arrive. Check-in […]
Calling all artists (and non-artists too)! Saturday, May, 16th the Great Marsh will be open dawn to dusk. Take a self-guided tour to paint, take photos, or simply enjoy the wetlands, woods, and meadows. If you are interested in attending, please RSVP to lori@greatmarshinstitute.org with your name and the time you plan to arrive. Check-in […]
Join us Saturday, May 16 and Sunday, May 17 as local bird photographer and hobbyist Hilary Vadner leads a 2-day workshop on “The Art of Bird Photography.” On Saturday afternoon, May 16 from 2pm-4pm, we’ll meet in the Nature Center for a presentation on avian photography, techniques and tips. Sunday morning, May 17, students will […]
Come join us at The Great Marsh Institute on Sunday May 17 at 8:00 AM for our monthly bird walk. Please RSVP to lori@greatmarshinstitute.org. This will help us to organize and keep groups small. This event is free but donations are always welcome via our Paypal, Venmo, or cash donations at the door.
Come join us at The Great Marsh Institute on Sunday June 14 at 8:00 AM for our monthly bird walk. Please RSVP to lori@greatmarshinstitute.org. This will help us to organize and keep groups small. This event is free but donations are always welcome via our Paypal, Venmo, or cash donations at the door.
Join us for a firefly safari and see nature’s light show! Did you know that Pennsylvania is host to more than 30 species of fireflies? Do you know why fireflies flash, where they live most of the year, and what we can do to support these beautiful creatures? Join Pennsylvania Master Naturalist, Carl Manthey, for […]
Calling all artists (and non-artists too)! Sunday, June 21st the Great Marsh will be open dawn to dusk. Take a self-guided tour to paint, take photos, or simply enjoy the wetlands, woods, and meadows. If you are interested in attending, please RSVP to lori@greatmarshinstitute.org with your name and the time you plan to arrive. Check-in […]
More than mushrooms, the woods and wetlands bloom with shelf fungi, rusts, and more of these organisms that play a critical role in breaking down plant matter, helping trees grow, and even eating bugs alive from inside. Join the Philadelphia Mycology Club for a walk (and take advantage of the recent wet weather) around the […]
Come join us at The Great Marsh Institute on Sunday, July 12h at 8:00 AM for our monthly bird walk. Please RSVP to lori@greatmarshinstitute.org. This will help us to organize and keep groups small. This event is free but donations are always welcome via our Paypal, Venmo, or cash donations at the door.
Calling all artists (and non-artists too)! Saturday, July 18th the Great Marsh will be open dawn to dusk. Take a self-guided tour to paint, take photos, or simply enjoy the wetlands, woods, and meadows. If you are interested in attending, please RSVP to lori@greatmarshinstitute.org with your name and the time you plan to arrive. Check-in […]
