May issue of Arboriculture & Urban Forestry Now Online!

The May issue of Arboriculture & Urban Forestry Now Online!

In this issue:

- Impacts of Wire Basket Retention and Removal on Fraxinus americana ‘Autumn Purple’ Growth Nine Years After Transplanting

- Growth and Physiology Vary Little Among North American, an Asian, and a North American x Asian Hybrid Ash in a Common Garden in Ohio, U.S.A

- The Microclimatic Effect of Green Infrastructure (GI) in a Mediterranean City: the Case of the Urban Park of Ciutadella (Barcelona, Spain)

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March Issue of Arboriculture & Urban Forestry Now Online

The March Issue of Arboriculture & Urban Forestry Now Online

In this issue:

- Toward Urban Forest Diversity: Resident Tolerance for Mixtures of Tree Species Within Streets
- Estimation of Individual Tree Health Condition for Japanese Mountain Cherry (Cerasus jamasakura)
  Using Airborne LiDA
- Frequency and Severity of Tree and Other Fixed Object Crashes in Florida

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ISA Holiday Break and Atlanta Relocation Information

The ISA headquarters will be closed for the holidays from 5 p.m. CST, 21 December 2018 through 8 a.m. EST, 7 January 2019. During this break, operations will transition from the office in Champaign, Illinois, to Atlanta, Georgia.

Beginning 26 December 2018, ISA will have customer support available for members and credential holders from 8:30 a.m. to 5 p.m. EST, Monday through Friday. Call +1-217-355-9411 or 888-472-8733 (US and Canada only) or email for assistance. ISA’s dedicated team of customer service professionals are ready to assist!

Read more to find answers to other frequently asked questions.

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2019 ISA Product Catalog Now Available

Find the resources you need on pruning and planting and to earn valuable CEUs. Also featured are products to help educate your customers on proper tree care. Flip through our mini-catalog to browse featured products and click through to shop in our web store.

Don't forget, ISA members enjoy significant savings with member discounts.

View the catalog now!

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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.