Table of Contents:
  • National organizations
  • Plant societies
  • Native plant societies and botanical clubs
  • Scholarly and scientific organizations
  • National garden club associations
  • state and provincial horticultural societies
  • Garden centers
  • Conservation
  • State, provincial, and local horticultural organizations
  • Nomenclature and international registration authorities
  • United States and Canadian governmental programs
  • Education
  • Horticultural therapy
  • Horticultural and botanical libraries
  • Herbaria
  • Botanical gardens, arboreta, conservatories, and other public gardens
  • Historical horticulture and museum gardens
  • Other horticultural displays
  • Community gardens
  • Test and demonstration gardens
  • Horticultural periodicals.