Webinar Archive

Watch Previous TREE Fund Webinars Here!

Note: CEU credit is only available for live broadcast.

Soil Assessment for Urban Trees January 2020

Bryant C. Scharenbroch, PhD, Assistant Professor of Soil Science, University of Wisconsin – Stevens Point, Research Fellow of The Morton Arboretum

The International Society of Arboriculture CEU code will be displayed at the end of the webinar. Make note of that code and enter it on the downloadable form provided by ISA.  There are directions on the form for completing the process. You should retain a copy for your records. You can find the downloadable form here.

We are grateful to Utah State University Forestry Extension for hosting this webinar.

Health Benefits of City Trees: Research Evidence & Economic Values November 2019

Kathleen Wolf, PhD, University of Washington

Supporting materials: Webinar Slides

More of Dr. Wolf’s research can be found at www.naturewithin.info, and the Green Cities: Good Health project at: www.greenhealth.washington.edu.

We are grateful to Utah State University Forestry Extension for hosting this webinar.

The Landscape Architect in the Nursery: Tagging Trees and Enforcing Specifications September 2019

James Urban, Urban Trees + Soils, and Paul Josey, Wolf Josey Landscape Architects

Supporting materials: Webinar Slides, Webinar Q&A

We are grateful to Utah State University Forestry Extension for hosting this webinar and to Virginia Chapter ASLA for their support and assistance.

Can We Vaccinate Trees to Protect Against Diseases? August 2019

Dr. Glynn Percival, Manager, UK and Ireland Bartlett Tree Research and Diagnostic Laboratory based at the University of Reading, UK

Supporting materials: Webinar Slides

We are grateful to the Alabama Cooperative Extension Program for hosting this webinar.

Remediating Compacted Soils Compromised by Urban Construction June 2019

Nina Bassuk, PhD, Cornell University

Supporting materials: Webinar Slides

Links from Dr. Bassuk’s webinar:

Cornell Soil Health Testing website
Cornell Nutrient Analysis Lab (compost testing)
“Long-term remediation of compacted urban soils by physical fracturing and incorporation of compost,” by Miles Schwartz Sax, Nina Bassuk, Harold van Es and Don Rakow
Dr. Bassuk’s website

We are grateful to Utah State University Forestry Extension for hosting this webinar

Cultivating Innovation — Documenting 15 Years of TREE Fund Research Impact May 2019

Andrew Koeser, PhD, University of Florida, and Richard Hauer, PhD, University of Wisconsin – Stevens Point

The Salt Dilemma: Growing Better Urban Trees in Northern Climates February 2019

James Urban, FASLA, Urban Trees + Soils; Andrew Millward, PhD, Ryerson University; Adam Nicklin,


Reducing Tree (and Soil!) Damage During Construction December 2018

Nina Bassuk, PhD, Cornell University

Supporting material: Webinar presentation slides

Emerald Ash Borer: Strategies for Conserving Ash in the Urban Forest November 2018

Dan Herms, PhD, The Davey Tree Expert Company

Supporting materialWebinar presentation slides

Arboricultural Biomechanics August 2018

Brian Kane, PhD, University of Massachusetts, Amherst

Supporting material: Dr. Kane’s answers to questions posed during webinar

Utility Arborist Research Fund: Work in Progress, Work to Come May 2018

J. Eric Smith, TREE Fund and Dr. Christopher Halle, Sonoma State University

Supporting materials: Presentation was very large so has been uploaded in four parts:

Invasive insects in Shade Trees: A 30-year Perspective from Colorado May 2018

Whitney Cranshaw, PhD, Colorado State University

Do Planting Stock Decisions Really Make Much Difference Down the Road? February 2018

Michael Arnold, PhD, Texas A&M University

Drought Tolerance in Trees — Improving Tree Selection for Challenging Urban Sites November 2017

Andrew Hirons, PhD, Myerscough College, U.K.

Tree Species Selection Guide (based on this research)

Municipal Forestry Baseline, Trends, and Dashboard September 2017

Dr. Richard Hauer, PhD, University of Wisconsin – Stevens Point

Soil Profile Rebuilding: Rehabilitating Compacted Soils June 2017

Susan Day, PhD, Virginia Tech

Supporting materials: webinar presentation slides and Dr. Day’s website (referenced in webinar)

Tree Risk Assessment – Perceptions, Reality, and Reliability April 2017

Andew Koeser, PhD, University of Florida

Soil Compaction and Urban Trees: Strategies for Gaining Ground November 2016

Bryant Scharenbroch, PhD, University of Wisconsin – Stevens Point

Supporting materials:

An Approach to Pruning You Won’t Forget May 2016

Ed Gilman, PhD, University of Florida

Strategies for Successful Urban Tree Growth in Wet and Dry Sites September 2015

Nina Bassuk, PhD, Cornell University

Emerald Cash Borer: It Will Cost You Money-Ways to Manage the Ash Cash Flow April 2015

Rich Hauer, PhD, University of Wisconsin – Stevens Point