Improve your Arboricultural Knowledge with ISA

Improve your Arboricultural Knowledge with ISA

ISA offers a variety of educational materials to help arborists improve their arboricultural knowledge. Each week we will feature a product, or group of products that will enhance your arboriculture education. This week, ISA is featuring the 2020 edition of The Glossary of Arboriculture Terms. This is the latest edition of ISA’s essential reference for arboricultural terminology which has been in print since the first edition in 2005.

The 2020 edition has been updated with 218 new terms, including expanded terminology for tree risk assessment and stationary rope climbing systems. Hundreds of definitions have been enhanced, clarified, and updated since the 2015 edition. This softcover book is spiral-bound with 215 pages, including a guide to abbreviations and acronyms. Purchase your copy now!

Now, ISA members can save 50% when they purchase The Glossary of Arboricultural Terms English-Spanish/Spanish-English, 2nd Edition. An excellent resource for the Spanish speaking community, this glossary translates more than 1,200 arboricultural terms from English to Spanish and from Spanish to English. Filled with illustrations to help identify tools, safety equipment, knots, leaves and many other terms, this book is a great addition for the arborist tool belt.  

All of these publication, along with many more resources, are available at


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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.