Tree Diseases

Common Tree Diseases and Infestations in Denver

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  • APPLE – Diseases: Fire blight bacteria (main disease) 

Fire Blight Denver - Fielding Tree and Shrub Care
By Ninjatacoshell – Own work, CC BY-SA 3.0

Leaf Curl Aphids - Fielding Tree & Shrub Care Plant Health Care
Leaf Curl Aphids, Photo By Jeffrey Hahn

Lilac Ash Borer - Fielding Tree & Shrub Care Plant Health Care Denver
Lilac Ash Borer, Steve Katovich, Bugwood.org

Cytospera Canker - Fielding Tree & Shrub Care Plant Health Care Denver

Bacterial Wetwood - Fielding Tree & Shrub Care Plant Health Care Denver, Courtesy of J. Walla

Cytospera Canker, Picture attribution: Photo courtesy of Missouri Botanical Garden
Bacterial Wetwood (1), Photo by J. Walla

Bacterial Wetwood - Fielding Tree & Shrub Care Plant Health Care Denver, Courtesy of W.R. Jacobi
Bacterial Wetwood (2), Photo by W.R. Jacobi

European Elm Scale - Fielding Tree & Shrub Care Plant Health Care Denver, Courtesy of Whitney Cranshaw, Colorado State, bugwood.org

Elm Leaf Beetle - Fielding Tree & Shrub Care Plant Health Care Denver
European Elm Scale, Photo by Whitney Cranshaw, Colorado State University, bugwood.org
Elm Leaf Beetle, Photo by Didier Descouens – Own work, CC BY-SA 4.0

Ips Beetle - Fielding Tree & Shrub Care Plant Health Care Denver
Ips Beetles, By USDA Forest Service – Ashville Archive, USDA Forest Service, Bugwood.org – Crop of File:Ips calligraphus.jpg, CC BY 3.0Cooley Spruce Gall - Fielding Tree & Shrub Care Plant Health Care Denver
Cooley Spruce Gall, CC BY-SA 3.0

Pine Needle Scale - Fielding Tree & Shrub Care Plant Health Care Denver, Courtesy of bberwyn photo

Pine Wilt Nematode - Fielding Tree & Shrub Care Plant Health Care Denver

Pine needle Scale, Photo by twitter.com/bberwyn
Pine Wilt Nematode By Simon Hinkley & Ken Walker, Museum Victoria

Thyronectria canker - Fielding Tree & Shrub Care Plant Health Care Denver

Locust Plant Bug - Fielding Tree & Shrub Care Plant Health Care Denver
Thyronectria Canker, Picture attribution: Photo courtesy of Colorado State University Extension
Plant Bug, Photo courtesy of Colorado State University Extension

Contact Us Now For a Free Tree Disease Consultation.