Tree Health Guide

There are many reasons for a tree to look unhealthy—including drought, disease, invasive species, pests and improper planting. Diagnosing the problem can be difficult. This online Tree Health Guide provides basic information as well as immediate access to a network of professional arborists, foresters and Cooperative Extension Service agents who can help.

Our goal is to enhance your ability to care for your trees and shrubs by connecting you to the right people.

August is Tree Check Month

This is a good reminder to look for signs of the Asian Long-Horned Beetle.

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Don't move firewood

Invasive pests such as the Asian longhorned beetle and the emerald ash borer spread by hitching a ride in firewood. You can help prevent their devastation by using firewood that has been cut locally.

Special note

Arborday.org is designed to provide non-biased information to the general public with no intended endorsement of specific products, companies, or services. It is important members follow the published recommendations of their own respective State Cooperative Extension Service when considering pesticide, insecticide, fungicide, and herbicide recommendations for the care of trees and shrubs. You may decide to seek an organic, Plant Health Care (PHC) or Integrated Pest Management (IPM) solution to your problem. Questions related to cultural practices and issues not specifically covered by Arborday.org should always be referred to your local Cooperative Extension office, Certified Arborist, or local Nursery Professional. Questions concerning commercial orchards or tree crops should be referred to your local Extension Service.