Greider’s Run


The land for this preserve was donated by the Witmer Family in 1987.

Printable Map

Land Management

This preserve, sandwiched between busy US 222 and a row of homes, is important primarily because of the symbolic message it conveys to passing motorists. It was reclaimed from a trash-filled hillside and was planted with a few fir trees, dogwoods, and white oaks, but otherwise, with the exception of occasional selective mowing each spring, was allowed to return to a natural state. Fragrant but invasive Japanese honeysuckle creates a challenge for the recovery of native plants.

Watershed Facts

Greider’s Run flows north into the Conestoga River to the Susquehanna, to the Chesapeake Bay.


Large numbers of volunteer black walnut trees, offspring of a large tree along the stream bank. Many young box elders and tulip trees are following this pattern.


The seeds of abundant grasses, weeds, and wildflowers provide a winter food source for birds and other wildlife.

Seasonal Info

Summer: Knee-high weeds and wildflowers.


PA 222, Willow Street Pike, West Lampeter Township.

From Lancaster, follow PA 272 south to preserve 0.1 miles south of MIll Creek and 0.5 miles north of the Willow Valley complex.

Printable Map

  • Fishing
  • Wildflowers
40.00078, -76.29181
Preserve Map
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