Pest Management – general
Crop profile for Northwest Christmas Trees, 1999, USDA Office of Pesticide Policy, Crop Profile for Oregon Christmas Trees.
Insect Management
Balsam Wooley Adelgid and Balsam Twig Aphid on True Fir Christmas Trees. From Living with Bugs. Article written by Jack DeAngelis, formerly with OSU Extension.
All About Aphids: biology, monitoring, control. From Living with Bugs. Article written by Jack DeAngelis, formerly with OSU Extension. Excellent color plates of all the different types of aphids.
Christmas Tree Plantation Pests. Feb. 2005. From Living with Bugs. Article written by Jack DeAngelis, formerly with OSU Extension.
Aphid and Adelgid Pests of Conifers in Oregon, 1994. Jack DeAngelis, Oregon Statee University.
PNW Insect Management Handbook, 2004, Oregon State University. Select Christmas trees from the list of options. Excellent color plates!
Biology and Control of Douglas-fir Needle Midge in Christmas Trees. Revised July 1994. Oregon State University Extension publications. EC 1373.
Insect pests of Christmas trees. Virginia Cooperative Extension. Very good jpeg images; some of these insects don’t pertain to the Pacific Northwest.
Disease Management
Sudden oak death. A new conifer disease that has been found in California, and most recently in southwest Oregon, but not on Dougla fir.
Fungal disease of true firs attacking Christmas trees. June 28, 2002. John Schmitz, the Capital Press.
On-Line Guide to Plant Disease Control, Oregon State University, Department of Plant Pathology. Type in the word Fir to bring up pictures of Christmas tree diseases.
Susceptibility of intermountain Douglas-Fir to Rhabdocline needle cast when grown in the Pacific Northwest. 2001. Gary Chastagner. Washington State University. Plant Health Progress.
Animal Management
Controlling Vole Damage to Conifer Seedlings. August 1992. R.E. Duddles and D.S. DeCalesta. Oregon State University. EC 1256.
Controlling Pocket Gopher Damage to Conifer Seedlings. Revised May 2003. D.S. deCalesta, K. Asman, and N. Allen, Oregon State University, EC 1255.
Weed Control
Pacific Northwest Weed Management Handbook, Oregon State University. The entire Handbook is on-line.
Managing Weeds and Vegetation in Christmas Trees. Revised August 1995. PNW Publications, PNW 219.
View herbicide labels on line, from Greenbook, Vance Communication Corporation. Lookup: AAtrex, Roundup, etc.
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