Christmas Tree Related Web Resources - Chal Landgren Pests http://ppathw3.cals.cornell.edu/ Trees/TreePests.html http://www.ext.vt.edu/departments/ entomology/christmas/slideshow2. html http://www.ces.ncsu.edu/nreos/ forest/xmas/catalog3.html Associations http://www.christmastree.net/ http://www.realchristmastrees.org/ http://nwtrees.com/ OSU Publications http://wwwagcomm.ads.orst.edu/ agcomwebfile/EdMat/edmatindex for.html Pesticides http://www.greenbook.net/free.asp http://ace.orst.edu/info/extoxnet/ http://pep.wsu.edu/ Universities http://coopext.cahe.wsu.edu/ http://www.ces.ncsu.edu/nreos/forest/xmas/growing/index.htm http://www.orst.edu/ State Agriculture Departments http://www.oda.state.or.us/ http://www.wa.gov/agr/ Editor's Note: Chal Landgren is the Oregon State University Extension Agent for Christmas trees and forestry in Columbia and Washington counties.