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Contact Information

Northern Research Station
11 Campus Blvd., Suite 200
Newtown Square, PA 19073
(610) 557-4017
(610) 557-4132 TTY/TDD

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Hardwood Tree Improvement & Regeneration


The Northern Research Station has realigned our staff from 37 Research Work Units and Programs into 14 new Research Work Units.

RWU-4157 is now part of NRS-14, Hardwood Tree Improvement and Regeneration Center.

Our Mission

To develop genetic, molecular, and tissue culture technologies and forest and nursery management guidelines for improving the productivity of central hardwood forests.


Our research focuses on developing :

  • Hardwood (oak and walnut) molecular markers for use in determining genetic quality and population structure of current natural forests and plantations, and quantitative genes in superior hardwood trees.
  • Vegetative and tissue culture propagation technologies for use in genomics research and mass propagation systems for superior trees.
  • Nursery guides for production of quality seedlings and forest management guides for regeneration and reforestation of degraded agricultural land and riparian zones.
  • Breeding and selection programs for black walnut, black cherry and northern red oak.

More Information

This site is under development as the Forest Service brings together the Northeastern and North Central Research Stations to form the Northern Research Station, serving the Northeast and Midwest. Check back often as we expand our site to reflect our combined commitment to supporting the natural resources and people of the Northeastern and Midwestern United States.

For more details about our research visit

Last Modified: 12/21/2007