Shade tree resources

The following resources can help while investigating a shade tree problem. the list of resources is compiled and reviewed every spring in preparation for the Plant and Insect Diagnostic Clinic hands-on workshop "Diagnosing Health Problems of Woody Plants" during the annual Shade tree short course in Ames IA.

ISU Plant & Insect Diagnostic Clinic


Tips to collect conifer, trees and shrubs samples

Digital photography tips

Phone: 515-294-0581



Twitter: @LauraJesseISU and @Linaplantdoc

Iowa DNR Forestry







To find forestry staff and a map of district foresters in Iowa, see

IDALS Iowa tree pest information:

ISU Forestry Tree Identification:

Recommend shade tree publications

Community Tree Planting and Care Guide

Identifying Tree Problems

Understanding Decline in Trees

Common Disease of the Great Plains

Tree and Shrub Problems in Kansas

Fungal Cankers of Trees

Scale Insects on Ornamental Plants

Protecting Bees from Pesticides

Common Problems of Ash Trees

Emerald Ash Borer Management Options, Spanish version Opciones de control del barrenador verde esmeralda

How to Recognize Common Diseases of Oaks in the Midwest or  U of  MN site

Oak Wilt

Oak wilt sample collection forest service, PIDC video

Bur Oak Blight

Verticillium Wilt of Woody Plants

Dutch Elm Disease

Rhizosphaera Needle Cast

Stigmina Needle Cast

Choosing an Arborist 

Consulting Arborists Provide Service in Iowa 

Looking for an Arborist? Trees Are Good is a site with ISA certified Arborist.

Looking for more resources? see our Encyclopedia articles for Insects and Diseases

Last Reviewed: 
November, 2018

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