Our programs have been co-sponsored by prominent horticultural and ecological organizations across the United States.

NDAL partners annually with Morris Arboretum of the University of Pennsylvania and Connecticut College Arboretum in offering its two-day landscape design conference.


Left: Long-time collaborator of the PA Annual Landscape Symposium, Jan McFarlan of Morris Arboretum

Right: Larry Weaner and long-time collaborator of the CT Annual Landscape Symposium, Glenn Dreyer of Connecticut College Arboretum 

Slide 4

Other collaborators and sponsors from past workshops and special events have included:

  • American Horticultural Society (Alexandria, VA)
  • Atlanta Botanical Garden  (Atlanta, GA)
  • Aton Forest (Norfolk, CT)
  • Brandywine Conservancy (Chadds Ford, PA)
  • Bowman’s Hill Wildflower Preserve (Washington Crossing, PA)
  • Coastal Maine Botanic Garden (Boothbay, ME)
  • Friends of Hempstead Plains (Staten Island, NY)
  • Greenbelt Conservancy (Staten Island, NY)
  • Holden Arboretum (Mentor, OH)
  • Lady Bird Johnson Wildflower Center (Austin, TX)
  • Morton Arboretum (Lisle, IL)
  • National Wildlife Federation (Vienna, VA)
  • New England Wildflower Society (Framingham, MA)
  • Nichols Arboretum at the Univ. of Michigan (Ann Arbor, MI)
  • Norfolk Botanical Garden (Norfolk, VA)
  • Rutgers University Department of Landscape Architecture (New Brunswick, NJ)
  • St. Louis Audubon Society (St. Louis, MO)
  • The Native Plant Center (Westchester, NY)
  • Tower Hill Botanic Garden (Boylston, MA)
  • Wild Ones – Native Plants, Natural Landscapes (Neenah, WI)