October at Mashomack

Trails are open 7 days a week, from dawn to dusk

The Visitor Center exhibits are open Thursday though Saturday, from 10 a.m. – 3 p.m. Visitor Center Bathrooms open daily 8 a.m. – 6 p.m.
Please note this schedule is subject to change as we closely follow Covid community levels for Suffolk County.

Mashomack will be closed to visitors
November 5th and 6th as we welcome the Hunters of Color group to the preserve. 
© Jim Colligan/TNC

Welcoming Fall at Mashomack 

As the colder winds begin to blow and leaves begin to change color, Mashomack comes alive with the sounds and sights of fall. Take a walk along our Coastal Loop as the marsh grasses start to turn their yellows and golds, or stroll through the meadows as the sumac shows off its vibrant reds. The oaks, hickories and sassafras will follow in their transition of color later in the season. For the most up to date fall color reports, visit the New York Fall Foliage Report.

Fall Programming 

The temperatures may be dropping, but our programs are staying strong! Join us at the preserve for one of our fall programs and events below. Be sure to check nature.org/events to learn about new programs as they are added. 

Saturday Seedlings 

Join us at Mashomack one Saturday a month for fun, hands-on learning with our team. During this hour-long program, we’ll explore the natural world around us and learn about different animals and habitats at the preserve. Activities will include crafts, snacks and/or exploring our trails. Ages 4-8. All programs from 9 a.m. – 10 a.m.

Reservations required. 

  • Seedlings: Nocturnal Nature – Saturday, October 22nd  
  • Saturday Seedlings: Hibernation Huddle – Saturday, November 12th
  • Saturday Seedlings: Seasonal Snowflakes – Saturday, December 10th

For questions or reservations, email MashomackPreserve@tnc.org


Volunteer Coastal Cleanup 

Come out for a day of volunteering as we work to clean up our coastline! Together, we can help keep our environment free of litter. All are welcome, advanced registration required.  

  • Sunday, October 9th, 10 a.m. – 12 p.m.

For questions or reservations, email MashomackPreserve@tnc.org.


Volunteer Shellfish Workday 

After many years, Mashomack’s shellfish nursery and volunteer shellfish programs are ending. We would like to invite past, present and new volunteers to help us cleanup, organize and wrap-up the current program and staging area. Afterwards, please join us at the Manor House for oysters and bubbly as we celebrate years of fun and show our appreciation for Adam Stark, Coastal Scientist for The Nature Conservancy and champion for Mashomack shellfish. Advanced registration required.

  • Sunday, October 20th, 3:30 – 5:30 p.m. 

For questions or reservations, email MashomackPreserve@tnc.org


Halloween Nature Trail 

Our Halloween Nature Trail is returning this year! Join us for a fun, family-friendly hike filled with a few Halloween tricks—but mostly treats! The program will begin at the Visitor Center and guests can take a ½ mile hike along our storybook trail, meeting some creatures in the forest as you go. Seasonal refreshments will be provided. 

  • Saturday , October 29th, 5 p.m. – 7 p.m.

For questions or reservations, email MashomackPreserve@tnc.org


October Book in the Woods

Squirrel’s Family Tree by Beth Ferry  

Come take a self-guided, half-mile walk and read as you go. Squirrels eat acorns, but did you know they help plant oak trees, too? This fun rhyming book follows Squirrel and her family through the seasons and tells the story of how acorns, oaks and squirrels help one another. A perfect family nature adventure and a great way to get your kids into the outdoors. 


Barbados Commits to Ambitious Ocean Conservation

A new Blue Bonds project will unlock $50 million to help Barbados protect up to 30% of its marine ecosystems. 



Click on trail map to download. 



The Nature Conservancy works across New York, the United States and in 79 countries and territories to conserve the lands and waters on which all life depends. Learn more about our work at nature.org/NewYork

Join us today


The Nature Conservancy
79 South Ferry Rd
PO Box 850
Shelter Island, New York 11964


Copyright (C) 2021 The Nature Conservancy. All rights reserved. 



AAQ / Resource

Stelle Lomont Rouhani Architects