Mark Webber's Arboricultural & Horticultural Consultancy Forensic Arborists & Horticulturalist
A Sample of Our Past Professional Assignments.
Tree Damage and Liability
· Lightning-damaged trees – Indiana, Ohio, Pennsylvania, and Michigan (1998-present).
· Tree and landscape damage from vehicles – Indiana, Ohio, Pennsylvania, and Michigan (1998-
present).
· Fire-injured trees and landscaping assets – Ohio (1998-present).
· Improper landscape installations – Indiana and Ohio (2000-present).
· Flood-injured trees – Ohio (2010).
· Tree damage from underground blasting – Ohio (2010).
· Tree damage from underground drilling – Ohio (2010).
· Lead injuries to plants and trees – Ohio (2012).
· Tree failure and personal injury – Ohio (2017).
· Tree loss due to root damage and valuation based upon canopy credits – New York (2018).
· Tree failure and two deaths – New Jersey (2017).
· Traffic control device covered by tree branches that results in a vehicle collision – Florida (2017).
· Tree failure and one death – Ohio (2017).
· Tree branch failure causing injuries – Illinois (2017).
· Tree damage caused by fence post-installation – Ohio (2017).
· Tree loss and root destruction due to stump grinding – Ohio (2017).
· Improper pruning damage to trees – New Jersey (2017).
· Tornado damages trees and landscaping – Ohio (2019).
· A man sustained injury that resulted in his death when he pulled on a partially cut tree branch
that fell on him – Florida (2018).
· Tropical tree and habitat losses – Florida (2020).
· Forest destruction – Ohio (1997).
· Vandalism to trees and plants – Ohio (2013).
· Man crushed to death by an uprooted tree that fell on him – New Jersey (2016).
· Fire-damaged trees and vegetation – Texas (2020).
· Fire-damaged trees and vegetation – New Mexico (2020).
· Flower seed viability – Tanzania (2020).
· Tree damaged from pipeline vegetation management – Ohio (2020).
· Tree root encroachment into the underground gas pipeline – Ohio (2020).
· Running bamboo and underground pipe and hardscape damage – Virginia (2020).
· Tree root causing City sewer pipe blockage – Ohio (2020).
· Fruit tree orchard damaged by pressurized coal mine water – Illinois (2021).
· Tree loss of 250-year-old Oak trees – Ohio (2021).
· Tree damage by a fence contractor—Texas (2021).
· Potato crop damage as a result of seed potato exposed to higher-than-normal storage temperature – California (2021).
· Tree fails and disrupts electrical services that results in a traffic fatality – Indiana (2021).
· Verification of tree inspection data of an alleged Asian Longhorn Beetle-infested trees - Ohio
(2021).
· Tree’s critical root plate failure due to construction excavation - Ohio (2021).
· Tree valuation as a result of vegetation clearance for an underground pipeline – Ohio (2021).
· Redwood tree valuation – California (2021).
· Tree risk assessment of an elementary school playground - Ohio (2021).
· Tobacco leaf wrapper species analysis - Honduras (2021).
· Pea/forage crop casualty claim as a result of cattle grazing - Montana (2021).
· Zoning dispute with a horticultural operation - Ohio (2021).
· 600-year-old Oak tree risk assessment - Ohio (2021).
· Oak tree loss claim - Texas (2021).
· Tree root intrusion and value claim regarding pipeline right of way - Ohio (2021).
· Ash tree assessment for a municipality in Ohio (2021).
· Silver Maple tree risk assessment - Ohio (2021).
· Tree preservation plan for a large land development project - Ohio (2021).
· Tree preservation management for the National Park Service as part of a property renovation
project - Ohio (2021).
· Underground pipeline tree inspection and appraisal - Ohio (2021).
· Pipeline installation company damages structural root plate of an Elm tree - Ohio (2021).
· Tree Appraisal of a damaged property as the result of a housing developement - Washington
State (2021).
· Wildlife management contractor damages another property owners’ tree - Ohio (2021).
· Bermuda grass at a golf course allegedly loss due to ice formation crushing the plants - Texas
(2021).
· Redwood Tree valuation after fire event - California (2021).
· Agricultural field rendered allegedly unusable by a pallet storage - Ohio (2021).
· Alleged light exposure causes Cannabis crop to become hermaphroditic – Colorado (2021).
· Dendrochronology analysis of Cottonwood and Green Ash trees involving position of the
Yellowstone River in 1895 – North Dakota (2021).
· Tree removal contractor allegedly removes 1000+ trees and property owner makes the claim of
2-million-dollar claim in tree damages – Ohio (2021).
· Providing consultations to township regarding zoning violations involving trees and vegetation
alongside roadways - Ohio (2022).
· Powder Post Beetle Damage to Kitchen Cabinets - California (2022).
· Alleged tree root damage to porch foundation- South Carolina (2022).
· Appraisal of trees being taken by a municipality by eminent domain - Ohio (2022).
· Alleged Pecan tree irreversibly damaged and its appraisal - Texas (2022).
· Hackberry tree collapses and damages three dwelling and two personal injuries - Kentucky
(2022).
· Tree damage assessment and appraisal of 400+ Oak trees involving electrical transmission
system clearance-Texas (2022)
· Tree damage assessment of scrub Oaks by adjoining property owner - Utah (2022).
· Oak tree failure in a campground that causes a fatality - South Carolina (2022).
· Live Oak trees damaged when an underground utility line is installed - Texas (2022).
· Pine tree’s top fails and strikes a motorist - South Carolina (2022).
· Live Oak’s co-dominate limb fails and strikes a dwelling - Tennessee (2022).
· Powder post beetles damage kitchen cabinets - California (2022).
· Tree crew leaves a storm-stricken tree in a roadway that causes a vehicular fatality - Indiana
(2022).
· $2-million damage claim involving the accidental removal of a Post Oak - Texas (2022).
• Workplace Accidents and Standard of Care
· Tree worker selection and use of equipment caused his injuries – South Carolina (2014).
· Tree failed and injured landscape worker – Wisconsin (2015).
· Arboricultural worker electrocution – Florida (2015).
· Landscape worker electrocution – Mississippi (2016).
· Worker electrocuted when working in a tree – Georgia (2018).
· Landscape contractors improper tree planting – Ohio (2014).
· Power company goes off the right-of-way and removes trees – Ohio (2012).
· Tree branch falls that causes man to be electrocuted – Virginia (2018).
· Tree worker injuries: evaluation of training and equipment – Pennsylvania (2019).
· A sinkhole caused by improper grading – Pennsylvania (2014).
· City cuts and drops a tree on motorists – Illinois (2018).
· Tree failures caused by trenching too close to the incident tree – New Jersey (2018).
· Grocery store employee seriously injured removing a tree limb – Texas (2020).
· Tree worker fatally injured as the result of the use of an excavator to remove a tree – West
Virginia (2020).
· Tree worker fatally injured as the result of another worker felling a tree on top of the first worker
– West Virginia (2021).
· Tree worker seriously injured when felling a tornado-damaged tree – Indiana (2021).
· Arborist injured by electrocution when attempting to remove a tree – Florida (2021).
· Tree worker fatally injured during a limb/tree removal operation—North Carolina (2021).
· A do-it-yourself tree removal project caused a personal injury - Kentucky (2021).
· Landscape worker fatally injured as a result of pruning a alm frond - Florida (2021).
· Neighbor is injured assisting a property owner in the removal of a storm-damaged tree -
Kentucky (2021).
· Tree work injured when attempting to rigg and remove a 500lb tree limb – Florida (2022).
· Tree worker fatally injured when conducting vegetation management in a distribution circuit –
Delaware (2022).
· Worker electrocuted when installing fiber optic cable near a White Pine tree - Ohio (2021).
· Tree fails and causes injuries to campers - Ohio (2021).
Herbicide, Pesticide, and Crop Losses
· Class Action Lawsuit herbicide-injured plants – Nationwide (2010–2014).
· Tordon herbicide applied to adjoin person trees – Ohio (2000).
· Stone Fruit and Blueberry crop loss – California (2014).
· Tree and plant loss due to herbicide physical spray-particle drift, vapor drift, and herbicide-
contaminated soil – Ohio (1997–present).
· Antifreeze toxicity damage to landscape plantings – Ohio (2012).
· Mahogany tree investment loss – Philippines (2015).
· Vegetable farm crop loss due to herbicide exposure and poor farming practices – Indiana (2018).
· Amortization of tree and plant investments – Michigan (2017).
· Agricultural Cooperative sells the wrong product to a grower that results in crop loss – Iowa
(2018).
· Blue Eucalyptus tree poisoned – California (2016).
· Bermudagrass Sod Farm damage from the application of Atrazine and Poast Herbicide –
Louisiana (2020).
· Landscape Damage by the use of Bleach – Tennessee (2020).
· 15,000 trees damaged by the use of Imazapyr herbicide – Virginia (2021).
· Fruit tree orchard damaged by pressurized coal mine water – Illinois (2021).
· Organic vegetable crops and tree damage as the result of Dicamba herbicide spray drift (2021).
· Inspection of an alleged forage crop production field to determine plant species were indeed
for the use of hay production - Ohio (2021).
· Inspection and crop loss calculations of Sorghum – Texas (2021).
· Organic vegetable crops and tree damage in Ohio due to glyphosate and dicamba drift - Ohio
(2021).
· Soybean Crop loss potential due to herbicides Dicamba and Mesotrione improperly applied -
Missouri (2021).
· Berry Farm affected by a commercial applicator’s application of glyphosate and synthetic auxin
herbicide application—Wisconsin (2021).
· Pea crop allegedly damage from a herd of cattle—Montana (2021).
· Alleged Cotton crop damage from Glyphosate and 2.4-D herbicide drift – Arizona (2021).
· Over fertilization of a Cotton Crop - Mississippi (2022).
· Alleged Cannabis crop failure due to a growing range door left open - Colorado (2022).
· Cotton crops sustain injuries due to Dicamba drift - Texas (2022).
· Blueberry and Blackberry farm crops damaged by Dicamba herbicide - Kentucky (2022).
· Cotton and corn crops affected by under fertilization - Tennessee (2022).
Premises Liability
· Pedestrian trips over a sidewalk panel that was lifted by a tree root – New Jersey (2014).
· Woman slips and sustains injuries from a tree nut – Florida (2018).
· Woman falls into a hole caused by a tree root – New Jersey (2020).
· Tree limb failure on two pedestrians – Virginia (2016).
· Woman struck and killed by a tree branch while riding on a bike path – Illinois (2019).
· Tree failure onto a motorist – Washington (2018).
· A tree uprooted during a nor’easter and struck a vehicle – New Jersey (2020).
· Pedestrian trips and slips over sidewalk panel covered in algae – Florida (2020).
· Railroad worker fatally injured by a fallen tree – Ohio (2020).
· Motorist seriously injured by an uprooted tree – Texas (2020).
· Man seriously injured when a Pine tree fails in New Jersey (2021).
· Motorist seriously injured by an uprooted tree in New Jersey during a nor’easter (2021).
· Child struck and injured when playing on a public playground by a tree that had been previously
damaged during construction – Massachusetts (2016).
· Child fatally injured when a tree falls on a cabin – Indiana (2021).
· Tree uproots and strikes a vehicle due to a municipal sidewalk replacement - New Jersey (2021).
· Woman slips and falls into pond and algae is alleged to have caused her to sustain fatal injuries
- New Jersey (2021).
· Tree uproots and strikes a dwelling causing an occupant to sustain fatal injuries – Kansas (2021).
· Tree worker is fatally injured when an insect (Bee) nest is disturbed during a tree stump removal
operation – California (2021).
· Minor sustained injuries when a roadside tree fails and strikes a vehicle – Alabama (2021).
· Tree alongside a roadway fails and causes fatal injuries in Pennsylvania - (2021).
· Tree limb failure that causes injuries to a pedestrian - Washington D.C. (2021).
· Tree sustained fatal injuries as a result of being struck by a vehicle - Ohio (2021).
· Maple tree fails and strikes a camper - Ohio (2021).
· Pine tree fails and strikes a cabin and an occupied vehicle – Maine (2021).
· Bicyclist slips and sustains injuries as the result of algae formation on a pathway - Texas (2021).
· Motorcycle is fatally injured when tree fails - Ohio (2021).
· House fire caused by an alleged Palm tree frond to conductor contact - Florida (2021).
· Tree worker is injured during a tree removal project involving a crane - New Hampshire (2021).
· Utility pole fails due to wood decay and causes structure fire - Missouri (2021).
· Landscape worker is fatality injured when working in a Palm tree near energized conductors -
Florida (2021).
· Bicyclist struck by a tree - Indiana (2021).
· Failure of a Red Maple tree causing property damage – Florida (2021).
· Failure of a Sugar Hackberry causing property damage – Texas (2021).
· Tree limb fails and causes injuries to a pedestrian – Pennsylvania (2021).
· Palm frond from a Queen Ann Palm falls and caused injuries to a restaurant patron – California
(2021).
· Tree limb fails and strikes a vehicle and causes driver to be injured – New York (2021).
· Minor child sustains electrical injuries when he touches a fallen tree laying on an energized
distribution line - North Carolina (2022).
· Medical transport worker slips on Sedum plants that encroach on sidewalk - Ohio (2022).
· Communication worker fatally injured in a tree - Ohio (2022).
· Eastern White Pine collapses and fatally injuries a motorist - Ohio (2022).
· Patron at a restaurant injured from a falling Queen Ann Palm frond - Florida (2022).
· Bicyclist is injured when a motorist struck him due to both party’s line of sight was blocked by
juniper hedge - Colorado (2022).
· Tree fails and causes injuries to a motorist - Kentucky (2022).
· Tree fails and causes injuries to a motorist - Ohio (2022).
· 40 acres of Pine trees sustained fire injuries - Florida (2022).
· Property owner claims a landscape contractor supplied inferior plant material - Ohio (2022).
· Tree uproots and fails and destroys dwelling - New Jersey (2022).
· Property owner claims a landscape contractor supplied inferior plant material - Michigan
(2022.)
· Tree work is fatally injured when he comes in contact with an electrical conductor - Minnesota
(2022).
· Landscape plants injured by pool water discharge - Pennsylvania (2022).
· Tree and landscape damage claim from a vehicle accident - Ohio (2022).
· Tree fails and causes injuries to a motorist - Pennsylvania (2022).
· Tree limb fails and strikes a patron at a bank - Virginia (2022).
· Trees exposed to ammonia gas - Arkansas (2022).
· Communication worker injured when he was working in trees near energized conductors - Ohio
(2022).
· Tree fails and causes fatal injuries to a motorist - Ohio (2022).
Non-litigation
· Tree risk assessments - Ohio and other states (1997-2022).
· Soil test collection and analysis - Ohio (1997-2022).
· Leaf collections and analysis - Ohio (1997-2022).
· Tree and landscape health assessments - Ohio, Indiana, Kentucky (1997-2022).
· Plant damage caused by herbicides - Nationwide (1997-2022).
· Assessment of tree damage after 200-miles-per-hour (mph) Hurricanes Irma and Maria - Sint
Maarten and San Juan Puerto Rico (2018).
· Assessment of tree damage after 21 tornados caused tree and plant damage - Ohio (2019).
· Assessment of tree damage after a 70-mph derecho causes damage - Ohio (2022).
· Inspection and care recommendations for the installation of 60+ 10-inch DBH trees - Ohio
(2022).
· Tree Impact study for vegetation management of the installation of underground
communication lines - Ohio (2022).
· Planning, development, and oversight of a $200,000 landscape project - Ohio (2022).
· Provided tree protection oversight to a multiunit complex - Ohio (2021-2022).
Mark Webber's Arboricultural & Horticultural Consultancy is a full-service business that serves the clients in the that are legal and insurance professionals, and property owners throughout the United States and Internationally. Our firm provides unbias objective analysis when questions and answers are needed about plants and tree conditions. We are often assigned the task to answer questions related to dangerous conditions, causation, notice, the standard of care, and damages.
Mark A. Webber holds 20 different certifications, qualifications, accreditations, and licensures in the fields of arboriculture and horticulture.
Mr. Webber is a admitted member of the American Society of Consulting Arborists(ASCA). To be a member of ASCA requires least five years of experience in arboriculture plus one of the following:
ASCA represents Consulting Arborists—the authoritative experts on trees, and whose objective, comprehensive viewpoint ensures the safety, health, and preservation of trees.
The American Society of Consulting Arborists (ASCA) is an elite class of specialized practitioners, foremost in their fields of endeavor. Simply being a member of ASCA requires individuals to meet a rigorous set of experience, training, and education to be counted among the green industry's best. ASCA members must also abide by a strict code of ethics and practices that are likened to the other high standards of society's most respected professionals.
For those willing to go beyond mere ASCA membership to the most respected credential in the green industry, ASCA maintains even higher levels of education, training, and experience in the Registered Consulting Arborist® (RCA) program. Those attaining RCA member status have demonstrated the highest commitment to arboricultural consulting by meeting the most rigorous requirements of the green industry. The competence and integrity to reach RCA status are so high, that fewer than 500 individuals have attained that pinnacle since 1999. As the best of the best, RCAs are committed to providing clients with the highest quality arboricultural consulting services available. As the top-tier experts on trees, RCAs bring more than technical competence, RCAs bring a level of objective and comprehensive judgment to their client's problems and questions. From safety and health to the preservation of trees, to bringing light to the most complex legal situations, RCAs serve a wide variety of customers. These include property owners, municipalities, contractors, attorneys, insurance professionals, landscape architects, developers, engineers, other arborists, and many more.
Most notably, Mr. Webber is a
Register Consulting Arborist #706,
Board Certified Master Arborist,
Certified Utility Arborist Specialist ,
Certified Municipal Arborist Specialist ,
Qualified in Tree Risk Assessement(TRAQ) ,
New Jersey Licensed Tree Expert (LTE) and a
Certified Professional Horticulturist with over 45 years of relevant professional experience.
Mr. Webber provides investigations, reports, and testimony in matters related to tree condition, maintenance, and removal. His expertise includes the management of nursery, arboricultural, agricultural and landscaping operations, pesticide use, appraisals of crop, tree and plant damage, and an assortment of horticultural issues. Mr. Webber is an admitted member of 32 industry organizations, including the American Society of Consulting Arborist, International Dendrology Society, and American Phytopathological Society, the OSHA (Occupational Safety and Health Administration) Small Business Advocacy Review Panel for Tree Care Industry Rules. Mr. Webber has been a court-qualified expert in his field in Ohio, New Jersey, North Dakota, New York, Michigan, Pennsylvania, Washington, California and Federal Bankruptcy Court.
Mr. Webber has been working at farms and nurseries since 1975. He remains active in his industry by serving on committees and boards and as the Founder/Co-owner of an arboricultural and horticultural firm. In this capacity, he provides a full range of landscape design, installation, and landscape management. His company provides tree evaluations and inventory, lawn care, weed and pest control, tree, and arboricultural services. Additional services include drainage improvements, soil, and leaf testing, management of trees during construction, installation of retaining walls, consulting, and other related areas. Mr. Webber has worked as a Research Assistant for the BASF Corporation involving fungicides, insecticides, and herbicides trials on a diverse assortment of economically import agricultural and horticultural crops. He also served as an Apiary (Honey Bee) Technician for The Ohio State University.
Mr. Webber earned an Associate in Applied Science and a Bachelor of Science degrees in Horticultural Science with a minor in Agricultural Economics both from The Ohio State University. He is designated as a Board-Certified Master Arborist by the International Society of Arboriculture and is a Tree Risk Assessment Qualified Arborist. Mr. Webber is a Master Nursery Technician by the Ohio Nursery & Landscape Association. He is designated as a MArborA by the United Kingdom’s Arboricultural Association. Mr. Webber is also a New Jersey Licensed Tree Expert (LTE #639) and is a Licensed Arborist in multiple states. The board of the American Society of Horticultural Science has designated Mr. Webber as a Certified Professional Horticulturist. The American Society of Consulting Arborist has credentialed Mr. Webber as Registered Consulting Arborist #706.
Mark is the only arborist in the United States that retains these certifications and qualifications.
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