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.

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

  • Atlanta Botanical Garden  (Atlanta, GA)
  • Aton Forest (Norfolk, CT)
  • Bowman’s Hill Wildflower Preserve (Washington Crossing, PA)
  • Coastal Maine Botanic Garden (Boothbay, ME)
  • Holden Arboretum (Mentor, OH)
  • Lady Bird Johnson Wildflower Center (Austin, TX)
  • Morton Arboretum (Lisle, IL)
  • National Wildlife Federation (Vienna, VA)
  • The Native Plant Center (Westchester, NY)
  • New England Wildflower Society (Framingham, MA)
  • Nichols Arboretum at the Univ. of Michigan (Ann Arbor, MI)