WELCOME to the Christmas Tree IPM Pest web page sponsored by the Department of Plant Pathology at Cornell University. At this site you will find discussions of individual conifer pests tailored to New York State Christmas tree growers. Although the pests listed here are those which are most commonly observed in New York State, and any timing recommendations given may be applicable to NYS only, many of the pests listed may also be common to other states in the Northeast or throughout the United States.

  As chemical control recommendations are constantly changing, no specific chemical controls will be listed here. Please refer to the current Pest Management Guide for Commercial Production and Maintenance of Trees and Shrubs, or contact your local Cooperative Extension Office for pesticide recommendations. Choose from among the following list of topics in our 'Pest Menu':


Allegany mound ant

Armillaria root rot

Balsam twig aphid

   Coleosporium needle rust of pine    

Common pine shoot beetle

Cyclaneusma needlecast

Cooley spruce gall adelgid

Diplodia (Sphaeropsis) tip blight

Eastern spruce gall adelgid

Fir fern rust

Eriophyid mite *

Lophodermium needlecast

European pine sawfly

Phytophthora root rot *

Gypsy moth *

Pine pine gall rust

Pine needle scale

Ploioderma needlecast

Pine root collar weevil

Rhabdocline needlecast

Pine tortoise scale

Scleroderris canker

Saratoga spittlebug *

Swiss needlecast

Spruce spider mite

Weir's cushion rust

White pine weevil

White pine blister rust

*Please note: These pages do not currently contain images.

PHOTOS: Many of the photos were taken by our department photographer Kent Loeffler.See the Plant Pathology Photo Lab web site for more details.

  Additional information concerning Pine Shoot Beetles, European Gypsy Moths, Asian Gypsy Moths, or other exotic pests, can be obtained by contacting the National Agricultural Pest Information System (NAPIS) / Cooperative Agricultural Pest Survey (CAPS) site for Pest / Biocontrol Information. You may also obtain information for some individual States through the NAPIS-CAPS site.

 Information concerning the Branching Out Newsletter, a resource for NYS arborists and other tree care professionals, can be found at: http://branchingout.cornell.edu

Growing Degree Day information

Site established: January, 1998

last update: March 20, 2007