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TREE Fund Webinars

TREE Fund webinars bring you the latest in tree research, directly from the scientists themselves. These one-hour programs are free and offer 1 CEU credit from ISA, SAF or NALP. Pre-registration is highly recommended; in doing so, you’ll receive a reminder email the day before the program. Many thanks to our hosts – Utah State University Forestry Extension and Alabama Cooperative Extension System. 


“Invasive Insects of Shade Trees: A 30 Year Perspective from Colorado”

  • Dr. Whitney Cranshaw, Colorado State University
  • May 2, 2018 at 12:00 p.m. Mountain. (translate to your time zone HERE)
  • Register HERE.
  • One CEU available from ISA, SAF or NALP; must watch live broadcast to receive CEU credit.
  • Webinar will be archived within one week of broadcast at

Dr. Cranshaw will discuss the ever-changing cast of new and invasive tree insects that have become issues in the Rocky Mountain states over the past 30 years. Through human-assisted spread there has long been a constant flow of new insects colonizing the woody landscape plants of the Rocky Mountain/Intermountain West, involving both species that are native to other areas of North America and those that are of more exotic origin. How well these new colonizers establish is often very different than occurs in other regions due to differences in climate, geography, landscaping practices, and the mix of plants present. In this discussion we will provide a review of how various introduced species on shade trees and shrubs have developed – or in some cases failed to develop – as pests of woody plants over the past three decades in Colorado.

Whitney Cranshaw is presently a professor and Extension Specialist of Entomology at Colorado State University. For the past 34 years he has conducted a broadly based program largely directed at questions involving arthropod pests affecting horticultural commodities in Colorado, including vegetables, shade trees, turfgrass and specialty crops. Much of his attention has involved projects of shade trees and shrubs woody plants, including the discovery and description of thousand cankers disease of walnut, drippy blight of red oak, and the occurrence of neonicotinoid resistance among European elm scale. This has resulted in production of over 85 refereed publications and several hundred related to Extension and outreach. Among the latter include the books Insects and Diseases of Shade Trees in Colorado, Bugs Rule! An Introduction to the World of Insects and, most recently, Garden Insects of North America, 2nd Edition

Read about Dr. Cranshaw’s work funded by TREE Fund HERE.

Thank you to our webinar host Utah State University Forestry Extension.


             J. Eric Smith

  Dr. Christopher M. Halle

“Utility Arborist Research Fund: Work in Progress, Work to Come”

  • J. Eric Smith, President and CEO, TREE Fund and Dr. Christopher M. Halle, Sonoma State University, Nature!Tech Program Lead, Center for Environmental Inquiry
  • May 23, 2018 at 12:00 p.m. Central. (translate to your time zone HERE)
  • Register HERE.
  • One CEU available from ISA; must watch live broadcast to receive CEU credit.
  • Webinar will be archived within one week of broadcast at

Join us for a discussion of current and future Utility Arborist Research Fund (UARF) projects. J. Eric Smith will touch on UARF’s history and announce the new 2018 UARF grant awards. Dr. Halle will detail the work currently being done on the UARF project entitled “Integrated Vegetation Management on Powerline Rights-of-Ways: Effects of Vegetation Treatment on Plant communities and Wildlife Diversity” and highlight the discoveries being made.

J. Eric Smith is a graduate of the United States Naval Academy at Annapolis, the Naval Supply Corps School, and the University at Albany. He served for ten years with the Naval Nuclear Propulsion Program, first as an active duty Naval Supply Corps Officer, then as a civilian employee of the U.S. Department of Energy. Since leaving Federal service, Eric has worked in the nonprofit sector as a fundraising professional, communications and public relations director, operations manager and chief executive officer. He has served as President and CEO of TREE Fund since 2015. Eric has also had an extensive career as a freelance writer in both traditional print and digital media, and since 1995 has maintained a vibrant online presence of both creative and professional writing at

Dr. Halle has worked with earth observing systems for over 30 years, including managing and leading cross-disciplinary research teams to address complex large-scale projects for industry.  His areas of expertise include environmental observation and sampling, data quality control, algorithm development, and data synthesis and presentation.  As Nature!Tech Lead, he creates industry-academic research collaborations on environmental and technology projects. He assists faculty in scoping and developing projects suitable for classroom instruction, and supervises students undertaking long-term monitoring projects on CEI lands. Read about Dr. Halle’s work funded by TREE Fund HERE.

Thank you to our webinar host Utility Arborist Association.


Future Webinars

Registration will open approximately one month before the program date.

Dr. Brian Kane, University of Massachusetts, Amherst

“Arboricultural Biomechanics”

August 23 at 12:00 p.m. Central

Dr. Dan Herms, The Davey Tree Expert Company

“Emerald Ash Borer: Strategies for Conserving Ash in the Urban Forest”

November 14 at 12:00 p.m. Mountain

  Dr. Nina Bassuk, Cornell University

Trees and Construction

December 13 at 12:00 p.m. Mountain



Watch Previous TREE Fund Webinars

Note: CEU credit is only available for live broadcast.


Do Planting Stock Decisions Really Make Much Difference Down The Road?

Dr. Michael Arnold (Texas A&M University) – February 2018

Drought Tolerance in Trees – Improving Tree Selection for Challenging Urban Sites

Dr. Andrew Hirons (Myerscough College, U.K.) – November 2017

Municipal Forestry Baseline, Trends, and Dashboard

Dr. Richard Hauer (U. of Wisconsin – Stevens Point) – September 2017

Soil Profile Rebuilding: Rehabilitating Compacted Soils

Dr. Susan Day (Virginia Tech) – June 2017

Supporting Materials:


Tree Risk Assessment – Perceptions, Reality, and Reliability

Dr. Andew Koeser (U. of Florida) – April 2017

Dr. Bryant Scharenbroch, University of Wisconsin

Soil Compaction and Urban Trees: Strategies for Gaining Ground

Dr. Bryant Scharenbroch (U. of Wisconsin – Stevens Point) – November 2016

Supporting Materials:

Dr. Ed Gilman, University of Florida

An Approach to Pruning You Won’t Forget

Dr. Ed Gilman (U. of Florida) – May 2016

Dr. Nina Bassuk, Cornell University

Strategies for Successful Urban Tree Growth in Wet and Dry Sites

Dr. Nina Bassuk (Cornell University) – Sept 2015

Dr. Rich Hauer, Univerity of Wisconsin - Stevens Point

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

Dr. Rich Hauer (U. of Wisconsin – Stevens Pt.) – April 2015

Register today!

You don't want to miss our TWO webinars in May: Invasive Insects of Shade Trees (May 2) and a Utility Arborist Research Fund Update (May 23). Registration is open for both at

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