Watershed Butterfly Festival

10am-4pm  |  Saturday, August 4, 2018

Save the date for our 18th Annual Butterfly Festival. It will be held at the Stony Brook-Millstone Watershed Association, August 4, 2018 from 10:00 a.m. to 4:00 p.m., on our 950-acre Watershed Reserve in Hopewell Township, NJ.

The Butterfly Festival is our largest annual educational event. It is an enlightening day focusing on the importance of maintaining the delicate balance between humans and the natural world. This family-oriented day has grown to be a major regional event, attracting more than 3,000 visitors.

Join us to learn how the Watershed is fulfilling its mission to protect the environment and clean water. We invite you to join us in modeling ways to participate in the process of keeping our earth green and provide examples of planet-friendly choices to help support greener-living.

Bring Your Business to the Butterfly Festival

  • Antimo’s Italian Kitchen
  • Sangita Datta – New York Life Insurance Co.
  • Whole Foods Market, Princeton
  • Geoscape Solar
  • McCaffrey’s Market
  • Renewal by Andersen
  • Stellitano Heating & Air Conditioning

Frequently Asked Questions

  • What does my admission fee cover?

Your admission fee covers lots of fun activities for the whole family including tours, butterfly house access, live music, and more!

  • Do I have to pay for my infant?

Children under the age of 2 are free.

  • Is food for sale?

Yes! There are lots of delicious choices from our food vendors.

  • Do you have an ATM on site?

The ATM is located inside the Watershed Center.

  • What if it rains?

This is a Rain or Shine event.

  • Can I drive on the property?

Parking will be located across the street from the Watershed Center at Bristol-Myers Squibb for no additional cost. Free bus transportation will run throughout the day to the festival and parking areas.

  • Can I walk to/from the parking area?

We ask that our visitors use the provided bus transportation to and from the parking area at Bristol-Myers Squibb and refrain from walking along the road and in traffic lanes.

  • Can I bring a stroller or wheelchair?

Folding strollers can be brought on the shuttle. Handicap parking will be available.

  • Can we ride our bikes there?

Yes! There are bike racks on the Watershed Reserve.

  • Can I bring my dog?

We’re sorry, only service animals are permitted.

  • Can I bring alcoholic beverages?

No outside alcoholic beverages are permitted on property. There will be beer, wine, and cider available for sale.
Smoking is also prohibited on our campus.

  • What is the address?

31 Titus Mill Rd. Pennington, NJ 08534 (Follow signs for parking)

  • What are the Festival hours?

10 am – 4 pm