Prince William Conservation Alliance
PWCA Calendar
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View our local nature calendar.

Read more about us here. Support local opportunities here.

Questions? Contact PWCA at 703.490.5200,


Keep the Green - Lower Taxes, Less Traffic, More Trees
Monday, July 16, 6:30pm

2018 Manassas Butterfly Count
Saturday, July 28, 9am

Butterfly Identification Workshop
Saturday, July 21, 1pm

Volunteer - Merrimac Farm Wildlife Garden
Friday, July 20, 9am to noon
Saturday, July 21, 9am to noon
Saturday, August 4, 9am to noon

Bird Walk at Merrimac Farm WMA
Last Sunday of every month beginning at 8:00am... except for December, when we host the Nokesville Christmas Bird Count.

Keep the Green: Lower Taxes, Less Traffic, More Trees

Print flyer.

Mon, July 16. Doors open at 6:30 pm, 7 pm program.

RSVP PLEASE to alliance@, 703.499.4954

Where: Giuseppe’s Restaurant,15120 Washington St, Haymarket.

Food and beverages available onsite for purchase.

Supervisors are quietly planning changes that could triple the number of houses in the Rural Crescent and sprawl development into our beautiful countryside. Learn how you can help.

A Community Conversation Led by Speakers:

Azure on AstersWelcome Elena Schlossberg
Coalition to Protect PWC & PWCA

Delegate Tim Hugo
VA 40th House District

Gil Trenum
PWC School Board

Elizabeth Ward
PW Soil & Water Conservation District

Martin Jeter
Mid-County Civic Association

Moderator Kim Hosen
Executive Director, PWCA

2018 Manassas Butterfly Count

Sat, July 28, 9am to 1pm

RSVP to alliance@, 703.490.5200, to join a survey team and receive info on meeting location.

This count is part of a nationwide program led by the North American Butterfly Association (NABA), which compiles information about butterfly populations used to study the effects of climate and habitat change on North American butterflies. $3 participation fee.

Butterfly Identification Workshop

Saturday, July 21, 1- 3pm

RSVP required. Space is Limited!, 703.490.5200

Where: Meet at Merrimac Farm, Stone House, 15014 Deepwood Lane, Nokesville

Brush up on your butterfly identification skills in this hands-on workshop led by Larry Meade. From egg to adult, butterflies light up our neighborhoods and natural areas.

Learn more about the butterflies you are most likely to see in the Prince William area. Join us the following Saturday to count butterflies in the Merrimac Farm WMA Circle of the Annual Butterfly Count.

Volunteer! Wildlife Garden at Merrimac Farm WMA

Fri, July 20 9 am to noon
Sat, Aug 4, 9 am to noon

RSVP appreciated to alliance@, 703.490.5200

Where: Meet at Merrimac Farm, Stone House, 15014 Deepwood Lane, Nokesville

Thanks to volunteer support, we created an area at Merrimac Farm WMA where people and the environment can come together as one. It's a great area to watch wildlife, learn about native plants and pollinators, and get ideas for your own backyard.

We need help to keep nonnative invasive plants in check to maintain high quality habitat. Even if you can come just once, your help makes a big difference. Wear long pants, sturdy shoes, and long socks.

Read more about Merrimac Farm Wildlife Management Area HERE.

Bird Walks at Merrimac Farm WMA

When: On the last Sunday of every month at 8am (except December when we sponsor the Nokesville Christmas Bird Count)

Where: Meet at Merrimac Farm, Stone House, 15014 Deepwood Lane, Nokesville

Phoebe by Julia FlanaganWe'll look for birds as we travel through the uplands to the edge of the floodplain, covering a variety of habitats, including open fields and woodland edges. Everyone is welcome.

Dress for the weather, bring binoculars and cameras. More info and RSVP (appreciated) to PWCA , 703.499.4954 or

View the bird list for Merrimac Farm HERE.


The best time to plant a tree was 20 years ago. The second best time is today.
Prince William Conservation Alliance is a nonprofit watershed organization serving Prince William and surrounding communities. We're working to explore, enjoy and protect our natural areas, and increase community involvement in stewardship opportunities.