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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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Stewardship Projects

Land Protection

Upcoming Programs

September 13, 2016 7:00pm to 9:00pm
Wolbach Farm, Sudbury

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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 greater angle-wing at SVT's Wolbach Farm in Sudbury, photographed by Norman Levey.
A greater angle-wing at SVT's Wolbach Farm in Sudbury, photographed by Norman Levey.

August 21, 2016

Norman Levey photographed this greater angle-wing at SVT's Wolbach Farm in Sudbury. Norman also recorded the call of the insect.

A ruby-throated hummingbird in Harvard, photographed by Robin Right.
A ruby-throated hummingbird in Harvard, photographed by Robin Right.

August 19, 2016

Robin Right photographed this ruby-throated hummingbird at her Harvard feeder.

A ruby-throated hummingbird in Stow.
A ruby-throated hummingbird in Stow.

August 18, 2016

Steve from Stow photographed a rose-breasted grosbeak, a ruby-throated hummingbird, and a black gray squirrel.

An American goldfinch at Mass Audubon's Drumlin Farm Wildlife Sanctuary in Lincoln, photographed by Steve Forman.
An American goldfinch at Mass Audubon's Drumlin Farm Wildlife Sanctuary in Lincoln, photographed by Steve Forman.

August 18, 2016

Steve Forman photographed an American goldfinch, an eastern tiger swallowtail butterfly, and honey bees at Mass Audubon's Drumlin Farm Wildlife Sanctuary in Lincoln. 

A gray squirrel in Framingham, photographed by Joan Chasan.
A gray squirrel in Framingham, photographed by Joan Chasan.

August 15, 2016

Joan Chasan photographed a gray squirrel, a mourning dove, a red-bellied woodpecker, and a tufted titmouse in her Framingham back yard.