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Learn More About the Underground System of Trees

ISA offers a variety of educational materials and products to help arborists expand their professional knowledge and experience. Every month, the ISA will feature a product or group of products. In March, the ISA is featuring Roots: A Field Guide for Identification by Kristin Moldestad and Olve Lundetræ.

Available in English for the first time, Roots: A Field Guide for Identification gives a unique insight into what the roots of different trees look like while explaining a previously little-described underground world.

This publication compiles roots from 45 different species of everyday European street and park trees and features photographs and descriptions of each example's anatomical characteristics, habits, and, in some cases, scent.

The book is practically oriented and aids readers in identifying roots in the field. It is a resource for professionals and for those who are simply curious about one of the essential parts of the tree—the underground system, where nutrients, water, and oxygen exchange happen, creating the basis for everything seen above ground.

Read about Roots: A Filed Guide for Identification online.

 

Image Database

ISA has a vast inventory of arboriculture- and urban forestry-related images that were compiled with the help of our members and volunteers.

Through a partnership with Forestry Images, ISA has thousands of photos and graphics available for use. ISA either owns the photos or has permission to permit their use.

Access the Image Database to browse the collection of images.

International Tree Climbing Championships

Press Releases

For inquiries about ISA news and media opportunities, contact our Communications Specialist.