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Impact

Together with our 2800 members and 200 volunteers, we...

  • Conserve and care for over 4300 acres of fields, forests, and farms in the 36 communities surrounding the Assabet, Sudbury, and Concord Rivers.
  • Maintain more than 55 miles of hiking trails.
  • Help friends and neighbors connect with nature through our events, programs, and outings.
  • Assist local organizations in their efforts to protect the region’s most important natural areas.

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Land Protection

Upcoming Programs

June 3, 2017 2:00pm to 4:00pm
Gowing's Swamp, Concord

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Take a Hike

Cowassock Woods, by Joyce Dwyer
Cowassock Woods, by Joyce Dwyer

Cowassock Woods and Ashland Town Forest are composed of a mosaic of mixed hardwood forest types, wetlands, vernal pools and stream corridors. Sixty to eighty year old mixed hardwood forests – mixed oak and oak/hickory forest types - are the dominant natural communities.

These communities differ in structure and species composition depending on the dryness of the sites. Rocky outcrops on the property create the driest sites with more black birch and smaller oaks. There are patches of naturally occurring coniferous species including white pine and eastern hemlock. There is also a large area of planted 70-foot white pine and a smaller area of planted red spruce and red pine in the center of Cowassock Woods. There is a large red maple swamp on the northern section of the Ashland Town Forest and several smaller wetlands on the town property. Cowassock Brook begins at the maple swamp and runs southeast though the SVT portion of the property. This creates a rich corridor of red maple, highbush blueberry, skunk cabbage and a large diversity of sedges and wildflowers. In many areas, even the upland forest contains some wetland indicator species; there is most likely a ledge or high water table creating relatively moist upland soil.

PDF icon Cowassock Woods Brochure and Map

Nature Sightings

A pink lady's slipper at Reeve's Hill in Wayland, photographed by Shelley Trucksis.
A pink lady's slipper at Reeve's Hill in Wayland, photographed by Shelley Trucksis.

May 20, 2017

Shelley Trucksis photographed these pink lady's slippers at Reeve's Hill in Wayland.

A marsh wren at Great Meadows National Wildlife Refuge in Concord, photographed by Steve Forman.
A marsh wren at Great Meadows National Wildlife Refuge in Concord, photographed by Steve Forman.

May 17, 2017

Steve Forman photographed a Canada goose, common carp, a great blue heron, a marsh wren, red-winged blackbirds, and a swamp sparrow at Great Meadows National Wildlife Refuge in Concord.

A mourning dove chick in Sudbury, photographed by Dawn Dentzer.
A mourning dove chick in Sudbury, photographed by Dawn Dentzer.

May 15, 2017

Dawn Dentzer photographed mourning dove chicks, a spring azure butterfly, a morel mushroom, a green frog, an American robin nest, house finches, a cotton-tailed rabbit, and a ruby-throated hummingbird in her Sudbury back yard.

A porcupine in Bolton, photographed by Liz Schoepke.
A porcupine in Bolton, photographed by Liz Schoepke.

May 12, 2017

Liz Schoepke photographed this porcupine in Bolton.