Your internet browser is not using current security protocols.
This will soon affect your ability to use the ISA website.
To update your security protocols, turn on TLS 1.2 in Advanced settings or contact your system administrator.
ISA Logo
About ISA  •  Find an Arborist  •  Newsroom  •  Job Bank  •  Contact Us  •  LOGIN
Join ISA
    Tree Climbers Guide Spanish
    ISA Members: $54.95
    Non-Members: $64.95
    Price in US Dollars

    Climbers' CornerTree Academy

    Anchoring Trees on Elevated Structures


    Many cities are setting tree cover canopy goals as part of their greening campaigns.  Ground-level tree planting is relatively straight forward, but more tree planting opportunities exist on rooftops and other elevated structures which comprise a significant percentage of urban impervious surface. These largely barren and underutilized spaces in the heart of our cities pose many problems; they degrade air and water quality, contribute to the urban heat island effect, and provide almost no environmental benefit.

    These wasted elevated spaces are being transformed by installing green (vegetated) roof systems; an industry that has aggressively been expanding by more than 100% in the past three years. The functionality of these rooftop oases can be dramatically increased when complimented with large maturing trees. 

    However, growing and anchoring trees on elevated structures presents many challenges for the arboricultural industry. In this presentation, we will define and explore these concepts.  We will show you how increasing your knowledge of various tree anchoring systems can add value to any green roof design and implementation team which can expand your client base in this rapidly growing industry.


    Jason Lubar is the Associate Director of Urban Forestry at Morris Arboretum of the University of Pennsylvania. He is an ISA PennDel Chapter Board Member and CoR Representative, serves on Penn-Del’s Nursery Quality Task Force, and is a Board Certified Master Arborist and a member of the American Society of Consulting Arborists. He also is on the Executive Board and is treasurer of the Pennsylvania’s Urban and Community Forestry Council.

    Climbers' CornerTree Academy

    ©International Society of Arboriculture 2009-2018
    PO Box 3129 • Champaign, IL 61826, USA • +1.217.355.9411

    Email comments and questions to ISA
    Thursday, February 22, 2018 2:46:19 PM (CST/ISA Headquarters Time)
    Please click here to view our privacy policy.