Books by HortScience, Inc. principals Nelda Matheny and Jim Clark.


A Photographic Guide to the Evaluation of Hazard Trees in Urban Areas

Authors: James R. Clark and Nelda P. Matheny
This second edition is designed to assist managers in evaluating the structural stability of trees by visually assessing their condition and surroundings. By providing a systematic rating approach, evaluations allow managers to identify hazard situations, rank their relative severity, and create a priority for work. Along with numerous illustrations, the book includes a 16-page section containing 43 full-color figures. The guide focuses on several important aspects: review of past and present site conditions; identification and assessment of structural defects in root, root crown, trunk, and crown; evaluation of likely and significant failure; assessment of the significance of the target; development of the hazard rating.

Trees and Development: A Technical Guide to Preserving Trees During Land Development

Authors: Nelda P. Matheny
Essential information for preserving trees during all stages of the land development process is included in this 200-page guide to proactive tree sustainment in the developing urban environment. Written to assist arborists, as well as development, design, and engineering professionals, this book provides a comprehensive look at tree assessment, techniques for reducing impact from development, and post-construction maintenance. Detailed instruction for preparing plans and reports, case studies and appendices provide additional resources for study and review.

Arboriculture: Integrated Management of Landscape Trees, Shrubs and Vines (4th Edition)

Authors: Richard W. Harris, James R. Clark, and Nelda P. Matheny
A reference tool for students in all aspects of Arboriculture, Landscape Management, and Urban Forestry. The text describes the integration of the landscape environment (climate, soil, and related organisms), its effect on landscape plants, and how to manage both in order to obtain the desired results with reasonable effort. New features for the fourth edition include updated chapters, expanded tables and graphics, preview and review sections, case studies, a useful glossary, and an extensive bibliography.

Abiotic Disorders of Landscape Plants: A Diagnostic Guide

Authors: L.C. Costello, E. Perry, N. Matheny, J.M. Henry and P. Geisel
This new book contains a wealth of information to help you diagnose abiotic disorders in landscape plants – disorders caused by environmental, physiological or other nonbiological factors. You’ll learn how to diagnose injury symptoms from over 20 different abiotic agents including water deficit, nutrient deficiencies, salinity, pH, sunburn, air pollution, herbicide and other chemical phytotoxicities, mechanical injuries, lightning, wind, and hail. You’ll also learn how to develop a step-by-step diagnostic strategy. Included are strategies, techniques, and tools you can use in diagnosing plant problems, common injury symptoms and their abiotic causes, and plant traits that can resemble abiotic disorders. Illustrated with 319 color photographs and 38 tables, this book is a "must-have" for the library of every landscape professional.

Municipal Specialist Certification Study Guide

Authors: Nelda P. Matheny and James R. Clark
Written as a study guide for arborists preparing for the Municipal Specialist Certification, this book is a valuable source of information for municipal arborists and urban foresters. Chapters include planning the urban forest, assessing and quantifying the urban forest, planting, maintaining, managing risk, and protecting the urban forest. The text is supplemented with dozens of research highlights and case studies. More than 100 photos and illustrations, along with tables and charts, provide additional information on a variety of topics.

A Handbook of Hazard Tree Evaluation for Utility Arborists

Authors: Nelda Matheny and Jim Clark
This handbook helps utility arborists evaluate trees for their potential to fall onto a utility facility. While tree failures cannot always be predicted, this handbook will be helpful in avoiding many tree-related interruptions by identifying trees that are likely to fail and then providing steps for taking the necessary action. Printed in two colors on sturdy paper, it is a great “carry along” tool for field work and helps the utility arborist be systematic and thorough during inspections.

Tree Risk Assessment Best Management Practices

Authors: E. Thomas Smiley, Nelda Matheny, and Sharon Lilly
This Best Management Practices publication is intended to serve as a guide for arborists to assess tree risk as accurately and consistently as possible, to evaluate that risk, and to recommend measures that achieve an acceptable level of risk. In doing so, tree risk assessors should recognize the value of preserving trees and the importance of avoiding unnecessary treatments.

Structural Pruning: A Guide for the Green Industry

Authors: Edward F. Gilman, Brian Kempf, Nelda Matheny, and Jim Clark
This publication introduces and describes a standard approach to pruning including structural pruning and raising, reducing, and cleaning of the crown. It focuses on enhancing tree structure as the most important task when pruning rather than on thinning tree crowns.

Bartlett Tree Experts

HortScience is now a division of Bartlett Tree Experts. We are supported by the Bartlett Tree Research Laboratories and its team of scientists and technicians, which is a significant resource that enables us to enhance our consulting services. Bartlett is also a world-class tree care company that has been in business for over one hundred years. HortScience | Bartlett Consulting will operate independently, but if you have need of tree care, local Bartlett offices are available to provide a full range of tree care services, including pruning and pest management.

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