University Horticulture Websites
  Cornell University
  Texas Aggie Horticulture
  The Ohio State Hort. in virtual perspective
  Penn State Variety Trials
  Univ of Illinois Horticulture Solutions

Botanic Gardens and Arboreta
  Kew Gardens
  Longwood Gardesns
  Denver Botanic Garden
  Internet Directory of Botanic Gardens

Seed and Bulb Companies
  Hollar Seed Company
  Moolenaar & Zonen
  Vegetable Seed Companies

Books, Journals, Other Publications
  The Amateur's Digest
 

Hort Organizations and Foundations
  American Society for Horticultural Science
  Herb Research Foundation
 

Fruit Crops

Vegetable Crops
  Carrot museum

Trees and Shrubs

Ornamental Plants

Herbs and Medicinal Plants

Turfgrasses