The Plainsboro Preserve is a collaboration with the Township of Plainsboro, the County of Middlesex, and New Jersey Audubon. Close to 1,000 acres of lands preserved by the County of Middlesex and the Township of Plainsboro support a diversity of habitats and wildlife, with one of the largest lakes in the area. The Preserve is a natural jewel for residents and visitors to the area and an ecological legacy for future generations.

New Jersey Audubon operates the Preserve’s Rush Holt Environmental Center from April through October, with the Township operating the Center from November through March. There are environmental education programs, nature experiences, and recreational offerings throughout the seasons. The Center houses program space, a variety of exhibits, live animals and a reference library.

Enjoy over five miles of trails meandering through mature beech woods, wet meadows, and the shoreline of scenic 50-acre McCormack Lake. Walk the floodplain of Devil’s Brook in search of the more than 150 species of birds that call the Preserve home during the year. Plants on site consist of a diverse showing of spring wildflowers and also include over ten species of rare or endangered plant species found sparingly elsewhere in the state.

NOTE:  Deer Management Program in Progress

The Township of Plainsboro is conducting a managed deer harvest program from mid-September through mid-February.  The hunt is consistent with the New Jersey Department of Environmental Protection’s policies and rules.  Click HERE for more information.


Rush Holt Environmental Center Hours:
November 1 through March 31 (operated by the Township of Plainsboro)
Thursday through Sunday – 11:00 am to 4:00 pm
Closed Holidays and Monday – Wednesday

Trails Open Daily
Winter Hours – 7:30 am to 5:00 pm

Center upcoming events

Jan 11

Kid’s Nature Photography Club

January 11, 2020 @ 11:00 am - 12:00 pm EST
Jan 11

Creative Gardening

January 11, 2020 @ 4:00 pm - 5:00 pm EST
Jan 19

Family Nature Walk Series

January 19, 2020 @ 1:00 pm - 2:00 pm EST

Things To Do

  • Over 5 Miles of trails
  • Environmental Education Center
  • Indoor tree house
  • Under the pond room
  • Lake view deck
  • Reference library

Special Programs

School and Youth Environmental Education Programs

Please call 609-427-3052 x102 or email for information

Scout Programs

We offer a variety of badges that relate to the Plainsboro Preserve and Central New Jersey wildlife and natural environments. Programs are scheduled at least one month out from the initial request. Please call 609-427-3052 x102 or email

Staff & Personnel

New Jersey Audubon operates the Plainsboro Preserve from April through October.

For inquiries from November 1 through March 31, please contact us via phone/email.

Contact Us

80 Scotts Corner Road
Cranbury, NJ 08512



  • No smoking, except in the parking area.
  • No picnicking, fires, camping or woodcutting.
  • No alcoholic beverages on the property.
  • No vehicles, bicycles, skateboards or horses on the trails.
  • No hunting or fishing.
  • No collecting of plants or animals.
  • No pets.
  • Leave only footprints — Take only pictures and memories.