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White Oak Society and Allston Jenkins Legacy Society Member Field Trip – SOLD OUT

Willisbrook Preserve | Sun, May 20, 2018, 2:00pm - 4:30pm

Event is sold out. Check out our other events to plan your next adventure outside!

Tucked between groomed soccer fields and an expansive residential complex, Natural Lands’ 126-acre Willisbrook Preserve serves as a tranquil community oasis. The preserve features secluded woodland trails, an abundance of birdlife, and 20+ acres of rare rock outcropping known as the Sugartown Serpentine Barrens.

Regional Director of Land Stewardship Gary Gimbert and Preserve Manager Cooper Williams will guide our walk, and describe Natural Lands’ controlled burning practices that encourage growth of unique, endangered wildflowers on the hostile barrens habitat. Additionally, we’ll learn about the warm-season grassland restoration and seed harvesting. Bring your binoculars!

Following the walk, we’ll enjoy camaraderie and light refreshments, including home-made cookies from our official Natural Lands cookie tins!


Willisbrook Preserve
Line Road
Malvern , PA


May 20, 2018
2:00pm - 4:30pm

Willisbrook Preserve is a mix of woods and grassland meadows, including just over 20 acres of a rare ecosystem known as the Sugartown Serpentine Barrens. These barrens support a variety of plant species, many of which are threatened or endangered. In 2010, the barrens were designated as a Wild Plant Sanctuary by the PA Department of Conservation and Natural Resources.

The walk covers approximately 2-3 miles of fairly-level, mowed trails.

Dress for the season, with long pants, long-sleeved shirts, and a hat. (Check for ticks post-walk).

Bring a filled water bottle.

Please leave four-legged friends at home.

Parking is available at Willistown Township’s Serpentine Preserve, 143 Line Road, Malvern. Look for the entrance located between soccer fields and residential complex next to Bryn Mawr Rehabilitation.

Outcroppings of serpentine rock occur only in a few places on the North American continent. Natural Lands’ Willisbrook Preserve encompasses 20+ acres of the Sugartown Serpentine Barrens, one of the most biologically diverse serpentine sites in Pennsylvania. The site hosts at least 14 known plant species of special concern (classified as endangered, threatened, or rare) in the state, including one that is globally threatened. Eleven rare butterfly species and 37 rare moth species are known to live in Pennsylvania serpentine barrens, which amounts to 17% of the butterfly species and 32% of the moth species currently listed by the Pennsylvania Natural Heritage Program as candidates for endangered or threatened status.


Event is sold out. Check out our other events to plan your next adventure outside!

Event is free and exclusively for White Oak and Allston Jenkins Legacy Society members. For more information about the societies, contact Suzanne Barton at sbarton@natlands.org or 610-353-5587 ext. 313.

Registration required. Please complete and submit the secure, on-line registration form below to let us know you are coming, or call 610-353-5587 ext. 221.

Events may be cancelled due to inclement weather or low registration. In that case, we will make every effort to update our website and contact registrants. Note that we cannot offer refunds of paid registrations or ticket purchases, but rest assured that your donation will help us in our work to save open space, care for nature, and connect people to the outdoors.

Photography policy:
Attendance at Natural Lands programs and events constitutes consent to be photographed for use in print and electronic media. Images will not be identified using full names without written approval from the individual. Please notify Natural Lands staff if you would prefer that your photo not be used.