The Althouse Arboretum was made possible through a donation of 1.6 acre lot with a historic house and open structure by the Hilsee Family and a unique agreement between GreenAllies and Upper Pottsgrove Township. While a majority of the land is owned by the township, GreenAllies manages the 17 acres of open space.

A rare and unique opportunity exists with this 17 acre open space property to promote environmental preservation and education for an entire community and beyond. It has recently been connected to Sussel Park and Prout Farm, two other large open space lands to increase our program options while preserving additional acreage.


  • Children’s Forest Trail
  • Native Plant Garden
  • Raised Garden Beds
  • Two Forest Classrooms
  • 1 mile + of hiking trails
  • Connects to Sprogel’s Run trail
  • Low Ropes Course


For years the Upper Pottsgrove Township has acted on a very progressive open space plan that values the preservation of the land while providing passive recreation. This commitment has resulted in the strategic acquisition of many open spaces that, when completed, will provide a long contiguous trail system throughout the township, including connections to surrounding communities. The  “Althouse tract” is a vital link for the completion of the township’s trail system by connecting two other open space parcels. This 17 acre site also allows the township to meet many of its Open Space Plan goals such as:

  • Potential linkage to existing parks, open space or trails
  • Environmental or view conservation value
  • Presence of historic resources
  • Continue to create non-sports activities for teens and adults