Botany Reference Califora: Plant Name Meanings & Derivations
Botany Reference MOBOT: Family Characteristics & Glossary
Education Cacti Guide
Education Cornell University: Woody Plants Database (dryland ratings - TREES)
Education North Carolina State University: Index of all Plant Fact Sheets
Education Ohio State University: Plant Fact Sheets (name AUDIO)
Education Oregon State University: Landscape Plants
Education University of British Columbia: E-Flora (native plant distribution & KEYS)
Education University of Connecticut: Plant Database (key ID features)
Education University of Florida: Environmental Horticulture (factsheets)
Education Urban Forest Ecosystems Institute, CA: TREE Selection Guide
Education Virginia Tech: Woody Plants (factsheets, ID keys, & name AUDIO)
Education Washington State University: PNW Plants
Education World Plants
Gardens Back Yard Gardener
Gardens California Gardens
Gardens Dave's Garden: PlantFiles (name PRONOUNCIATION & user comments)
Gardens GardensOnLine - Plantfinder
Gardens Heritage Perennials (where to buy plants locally)
Gardens HortiPlex Database
Government New South Wales Flora Online (keys & glossary)
Government Northern Ontario Plant Database (winter ID & factsheets & current NAMES)
Government USDA Natural Resource Conservation Service: Plants Database
Nurseries Bloom River Gardens
Nurseries Burnaby Lake Greenhouses
Nurseries Hawaiian Botanicals: Exotic Plants
Nurseries Monrovia Nursery Company (design ideas)
Nurseries Perennial Resource (companion plants)
Nurseries Rainy Side Gardeners
Nurseries Top Tropicals
Organizations American Conifer Society (cultivars)
Organizations Boreal Forest (northern Ontario native plants)
Organizations CanPlant (ecology)
Organizations Great Plant Picks (factsheets & companion plants)
Organizations Leafsnap (compare species)
Organizations Missouri Botanical Garden: Plant Finder
Organizations National Gardening Association: Plant Finder
Organizations Plants for a Future (medicinal uses & edibility)
Organizations Royal Horticultural Society: RHS Plant Selector (or search)
Organizations The Gymnosperm Database
Organizations The National Arbour Day Foundation (picture keys to TREES)
Organizations The Plant List (current NAMES accepted for all plant species & families)
Organizations Wikipedia: Plant (or search any plant name)
Turf Grass Identifying Grasses in Wisconsin Turf
Turf Grass OSU - Vegetative Identification of Common Turfgrasses in the PNW
Turf Grass Smithsonian Institution Libraries (detailed key to turfgrasses)