**East Tennessee Plant Swap** http://www.easttnplantswap.com/
Botanical Gardens Conservation International - Rare Plant Conservation http://www.bgci.org/
- Plant Search http://www.bgci.org/plant_search.php
Dave's Garden http://davesgarden.com/
- Garden Watchdog http://davesgarden.com/products/gwd/
- Plant Scout http://davesgarden.com/products/ps/
eFloras (plant keys) http://www.efloras.org/
Gardenweb http://www.gardenweb.com/
- Tennessee Forum http://forums.gardenweb.com/forums/tngard/
- Discussion of Liquid Copper Fungicide http://forums2.gardenweb.com/forums/load/trees/msg0619384225489.html
Horticultural Myths http://www.puyallup.wsu.edu/~Linda%20Chalker-Scott/Horticultural%20Myths_files/index.html
International Code of Botanical Nomenclature, Melbourne Code (ICBN) http://www.iapt-taxon.org/nomen/main.php
International Code of Nomenclature for Cultivated Plants (ICNCP), ninth edition https://www.ishs.org/sites/default/files/static/ScriptaHorticulturae_18.pdf
International Society for Horticultural Science (ISHS) http://www.ishs.org/
- International Cultivar Registration Authorities (ICRAs) http://www.ishs.org/sci/taxlist/taxlist.htm
International Society of Arboriculture (TreesAreGood.org) http://www.treesaregood.org/
Plant Patent Search by the University of Maryland https://www.lib.umd.edu/plantpatents
USPTO Patent and Patent Application Search http://patft.uspto.gov/
Plant Patent Classification (USPTO) https://www.uspto.gov/web/patents/classification/uspcplt/schedplt.htm
Another Plant Patent Search Tool http://historicip.com/patents/plants/search.php
Plants covered by Plant Variety Protection http://www.ars-grin.gov/cgi-bin/npgs/html/pvplist.pl?
Tennessee Exotic Pest Plant Council (TN-EPPC) http://www.tneppc.org/
- Tennessee Invasive Exotic Plant List http://www.tneppc.org/invasive_plants
The Plant List (list of accepted plant species) http://www.theplantlist.org/
Tree of Life Web Project (cladograms) http://tolweb.org/tree/
University of Florida Landscape Plants http://hort.ifas.ufl.edu/woody
USDA's National Plant Germplasm System http://www.ars-grin.gov/npgs/
- Repository Home Pages http://www.ars-grin.gov/npgs/rephomepgs.html
USDA's Plant Hardiness Zone Map Site http://planthardiness.ars.usda.gov/PHZMWeb/
UDSA's Web Soil Survey http://websoilsurvey.sc.egov.usda.gov/App/WebSoilSurvey.aspx
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Champion / Record Trees
- Monumental Trees http://www.monumentaltrees.com/en/
- National Register of Big Trees http://www.americanforests.org/our-programs/bigtree/
--- Search the Register http://www.americanforests.org/bigtrees/bigtrees-search/
- Eastern Native Tree Society http://www.nativetreesociety.org/
--- Great Eastern Trees, Past and Present http://www.nativetreesociety.org/bigtree/great_eastern_trees.htm
- Tennessee Champion Trees http://tn.gov/agriculture/forestry/championtrees.html
- Rocky Mountain Tree-Ring Research OLDLIST http://www.rmtrr.org/oldlist.htm
- Eastern OLDLIST http://www.ldeo.columbia.edu/~adk/oldlisteast/
- VA Tech Average and Max Tree Lifespans http://bigtree.cnre.vt.edu/lifespan.html
Plant Databases
- Missouri Botanical Garden http://www.missouribotanicalgarden.org/plantfinder/plantfindersearch.aspx
- UConn Plant Database http://www.hort.uconn.edu/plants/list.php
- NC State University Plant Fact Sheets http://plants.ces.ncsu.edu/
- Floridata http://www.floridata.com/index.cfm
- USDA PLANTS Database http://plants.usda.gov/index.html
- USDA FEIS Database http://www.feis-crs.org/beta/
- Dendrology at Virginia Tech http://www.dendro.cnre.vt.edu/dendrology/factsheets.cfm
- Dave's Garden PlantFiles http://davesgarden.com/guides/pf/
- Bioimages http://bioimages.vanderbilt.edu/metadata.htm?//metadata/list/all
Seed Information Websites
- The Seed Site http://theseedsite.co.uk/index.html
--- Types of Fruit http://theseedsite.co.uk/fruits.html
- Backyard Gardener Seed Germination Database http://www.backyardgardener.com/tm.html
- Ontario Rock Garden & Hardy Plant Society Seed Germination Guide http://www.onrockgarden.com/germination-guide/plants
- Tom Clothier's Germination Database http://tomclothier.hort.net/
- B&T World Seeds Database http://b-and-t-world-seeds.com/
- Gardener's Supply Seed Germination Database http://ourgardengang.tripod.com/Seed Germination DB.htm
- KLStuart's Seed Germination Database https://docs.google.com/spreadsheet/ccc?key=0AjX12qw9Y_bgcHRLazdGTkR4Xy1MTmJaTTQzMVV6RFE&hl=en#gid=7
- Trade Winds Fruit Seed Germination Tips http://www.tradewindsfruit.com/content/seed-germination-tips.htm
- Thyme Will Tell Seed Germination Database http://www.thymewilltell.com/seeds.html