Christopher Larson, BCMA, TRAQ Board Certified Master Arborist & Tree Expert

Professional Experience

Provide technical investigations, analysis, reports, and testimony toward the resolution of commercial and personal injury litigation involving arboricultural, botanical, and horticultural issues.

Arboricultural: Assess structural tree failures of the roots, trunk, and/or branches; pruning practices, tree removal, stump grinding, and plant health care practices; equipment use and operation; tree conflicts with infrastructure (sidewalks, bike paths, water lines, buried cables, electrical lines), trees and electrical hazards, tree appraisals, tree risk assessment, tree inventory, tree decay, tree wound response, wood identification.

Botanical: Identification and diagnostics of: algae, fungi, lichens, mosses, ferns, conifers, broad-leaved evergreens, and deciduous plant material; as they pertain to root rots, plant health, site conditions, and invasive species.

Horticultural: Investigate soil conditions leading to plant failure; plant identification, plant selection, plant appraisals; plant installation and establishment, landscape design, permaculture design; maintenance, drainage, irrigation practices, fertilizer and pesticide use; weed control, herbicide damage, organic and conventional pest mitigation practices; work processes

Plant Health Care Coordinator/Consulting Arborist  2020 to present

Provided private sector urban forestry and arboriculture management and services including safety assessment and risk management. Provided private sector arboricultural contract services. Maintained plant health care product inventory, scheduled plant health care services, hired, trained, and supervised plant health care division staff. Provided consulting services to assess general tree and landscape maintenance, safety and conditions, plant health care, tree selection and planting, tree risk assessment, tree and shrub appraisal/valuation (based on the current edition of the Council of Tree and Landscape Appraisers Guide), and comprehensive vegetation management plans. Estimated and consulted on tree removals requiring climbing, aerial lifts, and/or cranes. Project work direction/supervision/oversite. Maintained Right to Know binders and pesticide applicator personal protective equipment (PPE) inventory. Instructed Plant Health Care Technicians on equipment safety and procedures. Also participated in and coordinated commercial snow removal, structural pruning, shrub pruning, and general tree pruning. Operated aerial lifts, chippers, chip trucks, chainsaws, swingloaders, skidloaders, dump trailers, and climbing equipment.

Consulting Arborist/Project Manager  2017-2020

Provided private sector arboricultural contract services. Provided consulting services to assess general tree and landscape maintenance, safety and conditions, plant health care, tree selection and planting, tree risk assessment, plant appraisal (based on the current edition of the Council of Tree and Landscape Appraisers Guide), and comprehensive vegetation management plans. Estimated and consulted on tree removals requiring climbing, aerial lifts, and/or cranes. Project work direction/supervision/oversite. Participated in and coordinated commercial snow removal, structural pruning, shrub pruning, and general tree pruning. Operated aerial lifts, chippers, chip trucks, chainsaws, swing loaders, skid loaders, dump trailers, and climbing equipment.

Superintendent of Environment & Forestry  2009-2017

Provided public sector/governmental urban forestry and arboriculture management and services including safety assessment and risk management. Responsible for urban forestry management, surface water management, and landscape management. Provided work direction and supervision of Environmental Services staff. Served as Tree Board liaison. Coordinated Urban Forestry Community Events. Developed and administered a Tree Licensing Program and a Shade Tree Insect and Disease Program. Provided resident extension services for tree-related issues. Coordinated stormwater pond maintenance programs. Managed public sector contracts and grants. Developed presentations, training materials, safety procedures, and job hazard analysis sheets. Served on the Public Works Safety Committee. Maintained the division's personal protective equipment (PPE)(safety vests, helmets, chainsaw chaps, and fall arrest harnesses). Designed, installed, and maintained tree, shrub, ornamental, and ecological plantings. Performed tree, shrub, and landscape appraisals/valuations, based on the current edition of the Council of Tree and Landscape Appraisers Guide, for city owned properties. Performed controlled burns of natural areas. Operated aerial lifts, chippers, chip trucks, dump trucks, hook trucks, water trucks, tractors, front end loaders, backhoes, skid loaders, tool cats, trailers, chainsaws, and climbing equipment.

City Forester  2006-2009

Performed maintenance and removals of trees, shrubs, ornamentals, and vegetation within municipal parks, right of ways, and easements. Provided resident extension for tree-related issues. Inspected public and private property for shade tree diseases and notified residents of diseased trees and ordinance compliance. Provided work direction for seasonal staff. Served as Tree Board liaison. Coordinated Urban Forestry Community Events. Participated in municipal snow removal operations. Designed, installed, and maintained tree, shrub, ornamental, and ecological plantings. Performed tree, shrub, and landscape appraisal/valuation for city owned properties. Operated aerial lifts, chippers, chip trucks, dump trucks, hook trucks, water trucks, tractors, front end loaders, backhoes, skid loaders, tool cats, trailers, chainsaws, and climbing equipment.

Park Maintenance/Tree Inspector  2004-2006

Performed maintenance and removals of trees, shrubs, ornamentals, and vegetation within municipal parks, right of ways, and easements. Performed general park maintenance. Inspected public and private property for Shade Tree Diseases and notified residents of diseased trees and ordinance compliance. Participated in municipal snow removal operations. Operated aerial lifts, chippers, chip trucks, dump trucks, water trucks, tractors, front end loaders, backhoes, skid loaders, tool cats, trailers, chainsaws, and climbing equipment.

Performed maintenance and removals of trees, shrubs, ornamentals, and vegetation within Park District properties. Member of the Fargo Park District Safety Committee. Installed tree, shrub, and ornamental plantings. Operated log loader truck, bucket trucks, dump trucks, chippers, log skidders, skid loaders, tree spades, trailers, chainsaws, and tree climbing gear.

Forestry Laborer  2001 to 2003

Performed broadscale reforestation, landscape restoration, tree harvesting, planting, tree disease control, plant maintenance, controlled burns, and herbicide application. Operated straight trucks, one-ton trucks, skid loaders, chippers, and chainsaws.

Park Maintenance Laborer  2001

Performed general park maintenance, building maintenance, and playground inspections. Operated trucks, tractors, utility vehicles, mowers, snowmobiles, chippers, and chainsaws.

Planting trees, shrubs, and perennials. Installed hardscapes and planting beds. Commercial lawn mowing. Operated trucks, trailers, skid loaders, bed edgers, mowers, concrete saws, and chainsaws.

Performed tree pruning and tree removals. Operated log trucks, chip trucks, chippers, swing loaders, chainsaws, and tree climbing gear.

Planted trees, shrubs, and perennials. Installed planting beds. Performed tree and shrub pruning. Herbicide applications. Designed landscape plans. Operated chip trucks, backhoes, bed edgers, chippers, and chainsaws.

Equipment Operation Experience

• Aerial lifts (bucket trucks, boom lifts, scissors lift)
• Arborist climbing gear (ropes, saddles, ascenders, descenders, lanyards, carabiners, climbing spikes, pulleys, cambium savers, throw bags, SRS and MRS Systems)
• Log loader truck
• Log skidder
• Dump trucks, hook trucks, water trucks, tanker trucks, chip trucks, log trucks
• Tractors (snow blowers, buckets, brooms)
• Front end loaders
• Back hoes
• Skid loaders (grapples, forks, brush hogs, stump grinders, nursery tongs, augers, snow blade, cage plows, brooms)
• Swing loaders
• Chainsaws
• Brush cutters
• Stump grinders (walk behind)
• Grass cutters, lawn mowers, sweepers, snowblowers
• One ton snowplow truck with salter/sander
• Various truck mounted snowplows (v-plows, straight plows)
• Controlled burn equipment and gear

Professional Credentials

• ISA Board Certified Master Arborist (BCMA)
• ISA Tree Risk Assessment Qualification (TRAQ)
• ISA Municipal Specialist
• Minnesota Department of Natural Resources Tree Inspector Certificate
• Permaculture Design Certificate (PDC), Finger Lakes Permaculture Institute
• Minnesota Department of Agriculture Commercial Pesticide Applicator License A and E 

Education

B.S., Urban Forestry, University of Wisconsin, Stevens Point, Wisconsin

Continuing Education

2022

• Reach for the Sky: Tree Climbing Inspires Scientific and Personal Discovery, Minnesota Shade Tree Short Course, March 2022
• A Sharp Tool is a Safe Tool, Minnesota Shade Tree Short Course, March 2022
• Oak Diseases, Minnesota Shade Tree Short Course, March 2022
• A Forest in Every Neighborhood, Minnesota Shade Tree Short Course, March 2022
• Key Elements of an Anti-racist Urban Ecology, Minnesota Shade Tree Short Course, March 2022
• Overcoming Adversity and Climbing for Longevity, Minnesota Shade Tree Short Course, March 2022
• Minnesota Forests in the Wake of Oak Wilt, Minnesota Shade Tree Short Course, March 2022
• Climb Smarter: Five Tips to Extend Your Career, International Society of Arboriculture, March 2022
• Reducing the Tension Between Promoting Tree Diversity Versus Planting Natives, International Society of Arboriculture, March 2022
• The Surprising Benefits of Biodiversity, International Society of Arboriculture, March 2022
• Insect Vectors and Their Role in Disease Transmission Part II, International Society of Arboriculture, January 2022
• Stationary Rope System Climbing Parts 1-2: Anchors and Equipment, and Ascent and Working with SRS, International Society of Arboriculture, January 2022

2021

• Undercover: Understanding Native Wood Borers, International Society of Arboriculture, October 2021
• Tree Defect Identification, International Society of Arboriculture, October 2021
• Managing Dormant Buds as Arboricultural Assets: Lignotubers, International Society of Arboriculture, October 2021
• Tree Protection to Planting, Implementing BMPs from Design through Construction, Minnesota Shade Tree Short Course, March 2021
• Investments in Urban Nature and Inequality: Historical and Contemporary Impacts of Urban Greening on the Distribution of Environmental Benefits and Burdens in Cities, Minnesota Shade Tree Short Course, March 2021
• Wacky Weather and Tree Health, Minnesota Shade Tree Short Course, March 2021
• The Beauties and Benefits of Pollinator Habitat, Minnesota Shade Tree Short Course, March 2021
• Structural Pruning and Training: Early Care for Long Lasting Results, Minnesota Shade Tree Short Course, March 2021
• How Landscape Trees are Propagated, Minnesota Shade Tree Short Course, March 2021
• Adapting Urban Forests to a Changing Climate, Minnesota Shade Tree Short Course, March 2021
• The Crew are the First at the Scene for a Nonfatal Incident: What Should They Do, Minnesota Shade Tree Short Course, March 2021
• Applied Tree Biology, Minnesota Shade Tree Short Course, March 2021
• Plant Appraisal Data Collection, International Society of Arboriculture, January 2021
• Core Concepts of Plant Appraisal, International Society of Arboriculture, January 2021

2020

• Applying Morphophysiology to Tree Stability Assessment, International Society of Arboriculture, December 2020
• Quantifying Climbing Efficiency, International Society of Arboriculture, December 2020
• Innovations for Efficient and Safe Tree Care Crews, International Society of Arboriculture, December 2020
• The Worst Case Law Ever for Trees, International Society of Arboriculture, December 2020
• Wielding the A300 Standards: The Shield and the Sword, International Society of Arboriculture, December 2020
• Two Hands are Better Than One: A Cut Above the Rest, International Society of Arboriculture, December 2020
• What is Tree Vitality and How to Rate It? International Society of Arboriculture, December 2020
• The Disease Triangle, The Health Triangle, International Society of Arboriculture, December 2020
• Making it Stick Challenges in the Enforcement of Tree Regulations, International Society of Arboriculture, December 2020
• Creating A Culture of Safety in a Small Business, International Society of Arboriculture, December 2020
• Remove or Retain? Research and Anecdote Surrounding Wire Baskets, International Society of Arboriculture, December 2020
• Measuring a Tree’s Pulse and Its Relationship to Tree Health, International Society of Arboriculture, December 2020
• The Multiple Dimensions of Tree Defense to Insects, International Society of Arboriculture, December 2020
• Natural Disasters and Trees: Fire, Ice, Wind, and Drought, International Society of Arboriculture, December 2020
• Tree Canopy Change and Urban and Community Forestry Programs, International Society of Arboriculture, December 2020
• OSHA Proposes an Arborist Standard Why That’s a Good Thing, International Society of Arboriculture, December 2020
• The Return of Arboriculture Myths – The Science Behind What Works, What Doesn’t, and Why, International Society of Arboriculture, December 2020
• Tree Vitality: Why Should You Care? International Society of Arboriculture, December 2020
• Nursery Production Systems and Their Impact on Urban Tree Growth and Development (Part II), International Society of Arboriculture, December 2020
• Nursery Production Systems, International Society of Arboriculture, December 2020
• Applications of Biochar for Arboriculture, International Society of Arboriculture, December 2020
• Wood Decay Fungi Identification and Management, International Society of Arboriculture, December 2020
• Biology and Identification of Fungi, International Society of Arboriculture, December 2020
• Arborists and Wildlife: Retaining Trees for Wildlife Habitat, International Society of Arboriculture, October 2020
• Plant Appraisal Data Collection, International Society of Arboriculture, February 2020
• Pruning Cuts: Best Management Practices-Tree Pruning 3rd Edition, International Society of Arboriculture, January 2020

2019

• What Do We Mean by Host Plant Resistance and How Can We Use it in a Plant Health Care (PHC) Program, Minnesota Shade Tree Short Course, March 2019
• Spots, Casts, Blights, and Other Frights: Common Plagues of Pine, Minnesota Shade Tree Short Course, March 2019
• Diagnostic Process for Oak Conditions, Minnesota Shade Tree Short Course, March 2019
• Managing Tree Risk and Wildlife Habitat, Minnesota Shade Tree Short Course, March 2019
• Understanding and Preventing Lyme and Other Tick-Borne Diseases, Minnesota Shade Tree Short Course, March 2019
• Managing Root-Crown Balance with Tree Growth Regulators (TGRs) to Maintain Tree Health, Minnesota Shade Tree Short Course, March 2019
• Plant Appraisal-Lessons Learned, Minnesota Shade Tree Short Course, March 2019
• When Plants Go Bad: The Toxicology of Trees, Minnesota Shade Tree Short Course, March 2019
• Prune Trees Less, Train Trees More, Northern Green, January 2019

2018

• Whose Tree is it Anyway? Boundary Trees and Property Line Disputes, Minnesota Shade Tree Short Course, March 2018
• Identifying and Testing Trees for Decay, Minnesota Shade Tree Short Course, March 2018
• Callus, Woundwood, Decay, and Plant Health Care, Minnesota Shade Tree Short Course, March 2018
• Enhancing Tree Immune Systems by the use of Soil Amendments. A New Potential Management Strategy for Pests and Diseases, Minnesota Shade Tree Short Course, March 2018
• The Use of Biologicals. Their Potential for Improving Tree Health and Managing Pest and Diseases, Minnesota Shade Tree Short Course, March 2018
• Electric and Arboricultural Safety, Minnesota Shade Tree Short Course, March 2018
• Drift Away – Diagnosing Drift and Carry-Over Injury in Trees, Minnesota Shade Tree Short Course, March 2018
• Soil Health: It’s All About the Carbon, Minnesota Shade Tree Short Course, March 2018
• A Climbing Arborist Toolbox: Efficient Use of Modern Gear and Techniques, Minnesota Shade Tree Short Course, March 2018
• Soil Microorganisms and Tree Health, Minnesota Shade Tree Short Course, March 2018
• The Art and Science of Practical Rigging: Parts 1-8, International Society of Arboriculture, May 2018
• Assessing Biological Properties of Soil, Midwestern Chapter of the International Society of Arboriculture, January 2018
• Physical and Chemical Problems of Urban Soils: Parts 1-2, Midwestern Chapter of the International Society of Arboriculture, January 2018
• Oak Disease, Midwestern Chapter of the International Society of Arboriculture, January 2018
• Emerald Ash Borer (EAB) Cold Hardiness, Midwestern Chapter of the International Society of Arboriculture, January 2018
• Spotted Wing Drosophila, Midwestern Chapter of the International Society of Arboriculture, January 2018
• Tree Risk Assessment and the Use of Drones in Arboriculture, Northern Green, January 2018
• All About That Base. A Healthy Tree Story Begins Underground, Northern Green, January 2018
• Tree Injection: Best Management Practices, Northern Green, January 2018

2017

• Tree Diversity: It’s Genera, Not Species, Minnesota Shade Tree Short Course, March 2017
• The Conservation Value of Rights-of-Ways, Minnesota Shade Tree Short Course, March 2017
• That’s a Real Problem (Oak Wilt); This Could Become One (Thousand Cankers Disease), Minnesota Shade Tree Short Course, March 2017
• Responding, Recovering, and Restoring an Urban Forest After a Devastating Storm, Minnesota Shade Tree Short Course, March 2017
• Reforestation in the Wake of Emerald Ash Borer (EAB): How Forestry, Technology, and Ecology Can Assist in Forming Policy, Minnesota Shade Tree Short Course, March 2017
• Property Line Disputes in Urban Forestry, Minnesota Shade Tree Short Course, March 2017
• Omaha Permaculture, Minnesota Shade Tree Short Course, March 2017
• Basic Principles of Tree Appraisal, Minnesota Shade Tree Short Course, March 2017
• Arboriculture and Tree Energy Dynamics, Minnesota Shade Tree Short Course, March 2017
• Working in Compromised Trees, Rochester Arborist Workshop, February 2017
• Master Class: Current and Emerging Tree Pests, Northern Green, January 2017
• They all Fall Down: The Hazards of Removing Emerald Ash Borer Infested Trees, Northern Green, January 2017

2016

• Mechanisms of Ash Tree Resistance to Emerald Ash Borer, Minnesota Shade Tree Short Course, March 2016
• The Cost of Not Maintaining Trees, Minnesota Shade Tree Short Course, March 2016
• Experiences as an Independent Tree Care Consultant – Golf Courses and Other Large, Urban Greenspaces, Minnesota Shade Tree Short Course, March 2016
• The Future of White Oak (Group) in the Upper Midwest, Minnesota Shade Tree Short Course, March 2016
• Balancing Nutrients, Defense Mechanisms and Insect Pests, Minnesota Shade Tree Short Course, March 2016
• The Importance of Utility Line Clearance, Minnesota Shade Tree Short Course, March 2016
• Do We Really Know How Loads Move from Branches, Down the Stem, and into the Roots? Minnesota Shade Tree Short Course, March 2016
• Managing Tree Health by Managing Soil Microbial Health, Minnesota Shade Tree Short Course, March 2016
• Nutrient Management in the Urban Forest, Minnesota Shade Tree Short Course, March 2016
• Municipal Forestry Institute, Society of Municipal Arborists, February 2016
• Young Tree Care, Northern Green, January 2016
• Oak Wilt, Northern Green, January 2016
• Emerald Ash Borer Update, Northern Green, January 2016
• A Reasonable Approach to Landscape Diversity, Northern Green, January 2016

2015

• Cable Trees/Force of Impact/Changing Climates, Minnesota Shade Tree Short Course, March 2015
• Roots on Steroids: How Mycorrhizae Work, Minnesota Shade Tree Short Course, March 2015
• Drought and Its Impact on Tree Health, Minnesota Shade Tree Short Course, March 2015
• Trees and the Law: Whose Tree is it Anyway? Northern Green, January 2015
• Selecting Fruit Trees for the Landscape, Northern Green, January 2015
• Plant Roots and Soil Organisms: The Carbon Cycle, Northern Green, January 2015

2014

• Tree Risk Assessment Qualification (TRAQ) Course, International Society of Arboriculture, April 2014

2013

• Mountain Pine Beetle in MN, Minnesota Shade Tree Short Course, March 2013
• Non-Traditional Methods of Tree Valuation, Minnesota Shade Tree Short Course, March 2013
• Healthy Watersheds, Healthy Communities, Minnesota Shade Tree Short Course, March 2013
• Is it Oak Wilt or Bur Oak Wilt? Minnesota Shade Tree Short Course, March 2013
• Exotic Pests: What Species are Next to be Attacked, Northern Green, January 2013
• Tree Risk Assessment, Northern Green, January 2013

2012

• Tree Science-Classified: Conifers and Yews, International Society of Arboriculture, August 2012
• Tree Science-Palms: Not Just for the Tropics, International Society of Arboriculture, August 2012
• Tree Science-The Arboricultural Misfits: The Biological Classification, International Society of Arboriculture, August 2012
• Tree Science-Damage and Disorders: Steps to Proper Diagnosis, International Society of Arboriculture, August 2012
• Tree Science-Plant Traits that Resemble Abiotic Disorders, International Society of Arboriculture, August 2012
• Tree Science-Problems Related to pH, International Society of Arboriculture, August 2012
• Tree Science-Adventitious Roots: Occurrence and Management in Urban Trees, International Society of Arboriculture, August 2012
• Tree Science-Cool Trees: Surviving Cold Temperatures, International Society of Arboriculture, August 2012
• Through the Trees: How Tree Rings Can Help Us…, Minnesota Shade Tree Short Course, March 2012
• Invasive Exotics: The Michigan Experience, Minnesota Shade Tree Short Course, March 2012
• Insecticide Options, Northern Green, January 2012

2011

• Electrical Hazard Awareness and Prevention (EHAP), Minnesota Society of Arboriculture, November 2011
• Hazard Tree Workshop-St. Paul, Safe Trees LLC., September 2011
• Sawflies, Caterpillars, and Beetles, Minnesota Shade Tree Short Course, March 2011
• Sustaining Trees, Minnesota Shade Tree Short Course, March 2011
• Fungi and Diseases-Natural Components, Minnesota Shade Tree Short Course, March 2011
• Cues, Signals, and Tree Response to Pruning, Northern Green, January 2011
• Recognizing and Working with Natural Enemies, Northern Green, January 2011
• The Effects of Pesticide on Skin, Northern Green, January 2011
• Personal Protective Equipment, Northern Green, January 2011

2010

• Effects of Pruning on Tree Dynamics, Rochester Arborist Workshop, July 2010
• Motion of the Root Plate, Rochester Arborist Workshop, July 2010
• Branch Attachment, Rochester Arborist Workshop, July 2010
• Tree Diseases, Minnesota Shade Tree Short Course, March 2010
• Physics for Arborists, Minnesota Shade Tree Short Course, March 2010
• Redirects, Double Crotching, and Repositioning, Minnesota Shade Tree Short Course, March 2010
• Tree Root Ball Washing, Minnesota Shade Tree Short Course, March 2010
• Trees in a Changing Climate, Northern Green, January 2010
• What Happens in the Dark Beneath the Bark, Northern Green, January 2010

2009

• Loss of Tree Canopy to Emerald Ash Borer (EAB), Minnesota Shade Tree Short Course, March 2009
• Tree Care Practices and Arborist Liability, Minnesota Shade Tree Short Course, March 2009
• Unraveling the Web of Soil Microbiology, Minnesota Shade Tree Short Course, March 2009
• The Management of Parks and Urban Forests, Minnesota Shade Tree Short Course, March 2009
• Trees and Underground Pipes from a Problem…, Minnesota Shade Tree Short Course, March 2009
• Storm Water Management, Minnesota Shade Tree Short Course, March 2009
• Challenges Facing Pollinators, Minnesota Shade Tree Short Course, March 2009
• Advances in Diagnosing Root and Soil Disorders, Minnesota Shade Tree Short Course, March 2009
• Selectivity of Insecticides, Northern Green, January 2009
• Woody Plant Insect Management Update, Northern Green, January 2009
• Innovative Climbing for the Everyday Arborist, Northern Green, January 2009
• The Elms of MN: Myths and Mysteries, Northern Green, January 2009

2008

• Dirt on Roots-Problems, Diagnosis, Treatment, Minnesota Society of Arboriculture, October 2008
• Roots Exposed, Minnesota Society of Arboriculture, October 2008
• Technical Tools to Protect Trees on Construction, Minnesota Shade Tree Short Course, March 2008
• Climb Smarter, Not Harder, Minnesota Shade Tree Short Course, March 2008
• What Can’t an Air Knife Do? Minnesota Shade Tree Short Course, March 2008
• Pruning Wounds and Occlusion, Minnesota Shade Tree Short Course, March 2008
• Water Utility Management Institute, University of Minnesota, March 2008
• Trees and Storms: Knowing When to Run, Rochester Arborist Workshop, February 2008
• Growing Trees with Concrete, Northern Green, January 2008
• Soil Health Diagnostics, Northern Green, January 2008
• Fertilizers and Biostimulants, Northern Green, January 2008
• Sure Fire Rules of Tree Problem Diagnostics, Northern Green, January 2008
• 10 Keys to Tree Disease Management, Northern Green, January 2008

2007

• A Master Plan for Street Tree Design, Minnesota Shade Tree Short Course, April 2007
• Chemical Control of Oak Wilt, Minnesota Shade Tree Short Course, April 2007
• Surviving Winters in Minnesota: Trees, Minnesota Shade Tree Short Course, April 2007
• Pruning Urban Trees for Health, Safety, Rochester Arborist Workshop, February 2007
• Diseases of Trees, Shrubs, and Perennials, Northern Green, January 2007

2006

• Communicating with Homeowners, Minnesota Society of Arboriculture, October 2006
• Vista Pruning, Minnesota Society of Arboriculture, October 2006
• Top 10 Deciduous Trees, Minnesota Society of Arboriculture, October 2006
• Top 10 Evergreen Trees, Minnesota Society of Arboriculture, October 2006
• Commercially Important Tree Insects in Minnesota, Minnesota Society of Arboriculture, October 2006
• Invasives Discussion Panel: Response, International Society of Arboriculture, August 2006
• Finding Value in Urban Trees, International Society of Arboriculture, August 2006
• Tree Climbing Methods and Best Practices, International Society of Arboriculture, August 2006
• Being Creative with Your Rigging, International Society of Arboriculture, August 2006
• Building Bio-Friendly Parking Lots, Minnesota Shade Tree Short Course, March 2006
• Fire Management and Vegetation Restoration, Minnesota Shade Tree Short Course, March 2006
• Advanced Entomology: Insects That Chew, Pierce, Minnesota Shade Tree Short Course, March 2006
• The Life of a Tree, Northern Green, January 2006
• Aesthetic Morphology of Trees, Northern Green, January 2006
• Safety in the Green Industry, Northern Green, January 2006

2004

• Strength for the Trees, Minnesota Society of Arboriculture, September 2004
• Electrical Hazard Awareness Workshop, City of Fargo, February 2004
• 20 Minutes in the Life or Death of a Tree, Midwestern Chapter of the International Society of Arboriculture, February 2004
• North Dakota Urban and Community Forestry (ND U&CF) Tree Care Workshop – ANSI, Midwestern Chapter of the International Society of Arboriculture, February 2004
• North Dakota Urban and Community Forestry (ND U&CF) Tree Care Workshop – Pruning, Midwestern Chapter of the International Society of Arboriculture, February 2004
• North Dakota Urban and Community Forestry (ND U&CF) Tree Care Workshop – Insect Pests of Ash, Midwestern Chapter of the International Society of Arboriculture, February 2004

2003

• Aerial Rescue, City of Fargo, November 2003
• Ticks, Mosquitoes, and Minnesota- What’s Bugging You? Minnesota Shade Tree Short Course, March 2003
• Tree Climbing Championship in Minnesota, Minnesota Shade Tree Short Course, March 2003
• Advanced Entomology and Plant Health Care, Minnesota Shade Tree Short Course, March 2003
• Tall Tales from the Redwoods, Minnesota Shade Tree Short Course, March 2003
• Climbing Techniques, Minnesota Shade Tree Short Course, March 2003
• Tree House of Horrors, Minnesota Shade Tree Short Course, March 2003
• Rainwater Gardens, Minnesota Shade Tree Short Course, March 2003

Professional Memberships

International Society of Arboriculture
Minnesota Society of Arboriculture
Society of Municipal Arborists

Speaking Engagements

Pruning Trees and Shrubs in Your Landscape, Nisswa Garden Club, February 2022

v. 01/13/23