The Guide for Plant Appraisal: Overview of the 10th Guide

The Council of Tree and Landscape Appraisers (CTLA) represents seven supporting organizations within the green industry and is responsible for developing industry consensus methodologies for determining the value of vegetation in the landscape. Representatives to the council collaborate as authors of the Guide for Plant Appraisal and act as conduits to their membership throughout the development and review process. Read an overview from the council regarding the 10th Guide.

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Public Review: ANSI A300 Part 1 Pruning and Part 9 Tree Risk Assessment

The public review period for the revision of the ANSI A300 Part 1 Pruning and Part 9 Tree Risk Assessment standards is in effect from 19 August 2016 through 3 October 2016. Download a draft of the proposed Revisions on TCIA's A300 Current Projects Page. Comments may be sent to your member representative or directly to A300 secretary, Bob Rouse.

Public Review of Rule Proposal for the New Jersey Tree Expert and Tree Care Operator Licensing Act

ISA has reviewed the proposed licensing rules to be included with the act and has identified some questions and concerns regarding the licensing requirements. We encourage our members and ISA Certified Arborists™, especially those in New Jersey and surrounding states, to review the information and to submit comments by the deadline of August 26, 2016. Read the full announcement for more details.

Trees Are Good

Trees are good. Trees need care. Arborists care for Trees. This short public service announcement explains why you should hire a certified arborist to care for the trees at your home or business.

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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.