Tree Diseases
http://counties.cce.cornell.edu/allegany_cattaraugus/index.php/tree-diesases
Bark Splitting
http://www.plantclinic.cornell.edu/FactSheets/barksplitting/barksplit.htm
Tree Cankers
http://www.plantclinic.cornell.edu/FactSheets/cankertree/cankertree.htm
Asian Long Horned Beetle ID
http://www.entomology.cornell.edu/Extension/Woodys/ALB_Mahaffey/ALBHomepage.html
Emerald Ash Borer
http://www.emeraldashborer.info/
Beetle Busters
http://www.beetlebusters.info/
TCIA: Tree Care Industry Association
http://www.natlarb.com/Public/About_consumers.htm
University of Illinois Woody Plant ID
http://woodyplants.nres.uiuc.edu/
Arbor Day
http://www.arborday.org/index.cfm
International Society of Arboriculture
http://www.isa-arbor.com
Dendrology at Virginia Tech
http://www.cnr.vt.edu/DENDRO/DENDROLOGY/main.htm
National Forest Service
http://www.na.fs.fed.us/
The New York Botanical Garden
http://www.nybg.org
Brooklyn Botanic Garden
http://www.bbg.org
Queens Botanical Garden
http://www.queensbotanical.org
Wave Hill
http://www.wavehill.org
Snug Harbor
http://www.snug-harbor.org
Leslie Day
http://fieldguidenyc.com/
Foraging With the "Wildman"
http://www.wildmanstevebrill.com
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