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 Home: Gardens: Plants: Trees
Science: Agriculture: Pest Management
Science: Biology: Botany: Plant Pathology
Science: Biology: Zoology: Arthropoda: Entomology
Asian Longhorned Beetle
A new and deadly insect pest that kills trees by boring holes in the trunk. It affects maples, horsechestnuts, poplars, willows, elms, mulberries and black locusts.
Brown Spruce Longhorn Beetle
The brown spruce longhorn beetle is a deadly tree insect that kills red spruce trees. It has recently been introduced in North America in Canada's Nova Scotia.
Bugwood Network, The University of Georgia
Extensive resource on forest insects and related topics.
California Oak Mortality Task Force
Addresses the issue of elevated levels of oak mortality through research, management, education and public policy. Contains monthly updates, distribution maps, symptoms, and educational materials.
Canker Diseases
Overviews of fungal canker diseases of woody angiosperms and gymnosperms (i.e., trees), from West Virginia University.
City of Austin Oak Wilt Suppression Program
Information on the deadly oak wilt disease.
Colorado State Forest Service Forest Pest Management
Forest pest management information provided by Montrose District of the Colorado State Forest Service (CSFS) in cooperation with Colorado State University Cooperative Extension.
Dutch Elm Disease Information
This site provides information about Dutch elm disease and ELMguard - a new experimental preventative treatment being developed at the University of Toronto, Faculty of Forestry.
Fire Blight
Fire blight is a bacterial disease that affects apple trees, pear trees and rosebushes. It is caused by a bacteria "erwinia amylovora" which attacks the blossoms or flowers moving up to the twigs and then the branches.
Focus on Woody Plant Diseases
About several tree diseases that can stunt or injure a tree over time. From University of Illinois Extension.
Forest and Shade Tree Pathology
Online textbook of forest pathology, covering fungi (mycology), principles of tree disease and major diseases, wood anatomy and chemistry, dwarf mistletoes, hazard trees, disease ecology and management, cankers, rusts, needlecasts, root diseases, and more.
Forestry Images
Quality photographs of forest insects and disease organisms. Contains image search or browse by categories.
Gypsy Moth
The gypsy moth is a serious threat to trees including maples, oaks and elms. Caterpillars feed on leaves, weakening the tree.
Oak Wilt
Oak wilt is a devastating fungal disease that attacks red oaks, white oaks and live oaks of North America. Learn how you can identify and control this oak tree disease.
Ohio State University Extension - Asian Longhorned Beetle
Information about a tree pest recently discovered in the U.S.
Ohio State University Extension - Gypsy Moth Homepage
Information on gypsy moths and their control, from Ohio State University Extension.
Powdery Mildew
Powdery mildew is a fungus that attacks the leaves of various plants including poplar and willow trees and roses.
Sudden Oak Death
Created by the University of California's Sudden Oak Death Research Team, this site addresses the increasing number of oak trees in California that are dying from the fungal disease Phytophthora, and the effects the infestation is having on forest ecology.
Tent Caterpillars
The Eastern tent caterpillar affects black cherry trees and other fruit and shade trees. The forest tent caterpillar infests hardwood trees such as sugar maple and oak.
Tree Doctor
Care of trees and plants, treatment of diseases, insects, malnutrition and other pathologies with fertilizer, mycorrhixae, biostimulants and microinjection. Online ordering of products and books, also lists of professional arborists and pertinent links.
TreeLife For Oak Wilt Management
A new product for the management of Oak wilt that has proved to be very effective (over a decade of research and three years of testing on trees in central Texas). Also includes a tutorial on oak wilt and Dutch elm disease.
University of California Cooperative Extension Sudden Oak Death
Provides practical information on this disease. Includes history, hosts and symptoms, ecology, control and management, recent publications, and events.
US Forestry Service Pest Alerts
Collection of forest and tree health publications and fact sheets, primarily for midcontinent North America.
Whitetail Ridge Ranch and Tree Service
Specializing in the analysis,prevention and treatment of oak wilt using Alamo fungicide and root trenching.
Puzzling Disease Devastating California Oaks
NY Times article about the fungal disease nicknamed "sudden oak death syndrome." (August 13, 2000)
Beetlemania Attacks Trees
Beetles, both locals and out-of-towners, are expected to cause extensive damage to forests all across North America. (May 19, 1999)
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