Reference

• Aboutflowers.com
  From the Society of American Florists
  
  
• American Garden Museum
  Garden History and Heritage Gardens Across America. Includes personal stories.
  
  
• Botanical Research Institute of Texas
  Houses Southern Methodist University (SMU) Herbarium and botanical library
  
  
• Cultural Landscape Foundation
  
  
• E-Answers
  Search Cooperative Extension 250,000 documents at 50 land grant institutions.
  
  
• eNature.com
  National Wildlife Federation's searchable field guides.
  
  
• Garden Smart TV
  Garden Smart is broadcast on PBS stations. Smart Tips video clips online.
  
  
• GreenTreks Network
  "Telling stories that change the world."
  
  
• Harvard University Botany Libraries Collections
  
  
• HerbNet
  Everything Herbal
  
  
• Historic New England: Defining the Past. Shaping the Future.
  The oldest, largest, and most comprehensive regional preservation organization in the country
  
  
• Landscaping for a Healthy Planet
  Site sponsored by the Pennsylvania Audubon Society and the Alliance for the Chesapeake Bay to promote the environmental landscaping principles of their APATH and BayScapes Programs.
  
  
• New Jersey Weed Gallery
  "A collection of photos and descriptions of weeds found in New Jersey."
  
  
• NPR : Ketzel Levine's Talking Plants
  
  
• Ohio State University Web Garden
  Offers a wide range of multimedia resources
  
  
• Plant Patent
  A source of information about plant variety protection.
  
  
• Plantfacts
  Ohio State University's plant knowledge bank and multimedia learning center (includes the former Plant Dictionary).
  
  
• Rock Gardeners' Last Resort
  An Index of Plant and Gardening Databases
  
  
• University Gardens and Arboreta
  Lists Botanical Gardens and Arboreta at Universities in the United States and abroad.
  
  
• University of Minnesota Plant Information Online
  Comprehensive plant database. Subscription required.
  
  
• USDA Plants Database
  
  
• Weeds Gone Wild
  Provides information about invasive plants infesting natural areas throughout the U.S.