HEATKEYS

VT Forest Biology and Dendrology offers tree identification, growth, and physiology information.

Gardeners prefer Monrovia and buy our plants with confidence, knowing all our plants, flowers, trees, shrubs & perennials are bred to thrive and flourish in your garden or landscape.

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North Carolina Cooperative Extension

This official site of the Arbor Day Foundation provides information about planting and caring for trees, our Rain Forest Rescue and Tree City USA programs, and much more. Buy trees and give a gift of trees through our Trees in Memory and Trees for Am...

conifers.org: The Gymnosperm Database: natural history, botany and taxonomic information on conifers, cycads, ginkgo and related plants.

Floridata is a free online plant encyclopedia featuring a photo reference of plants and special features on gardening, the environment and natural science.

ARKive - The ultimate multimedia guide to the world

7000 rare and unusual plants with edible, medicinal or other uses. We place emphasis on creating an ecologically sustainable environment with perennial plants.

The home page for the United States Department of Agriculture PLANTS Database

GardenWeb is the largest gardening site on the Web, with garden forums, articles on gardening, directories of nurseries, gardens and gardening organizations, a botanical glossary, an events calendar, a plant database, contests, and much more!

Online Dictionary - Multiple dictionaries including: English dictionary, medical dictionary, legal dictionary, financial dictionary, computer dictionary, thesaurus, dictionary of acronyms and abbreviations, dictionary of idioms, thesaurus, Columbia e...