Business of PHC, Part 5: The Science – Host Species and the Things That Affect Them

Plant health care (PHC) is the science and practice of understanding and overcoming the succession of biotic and abiotic factors limiting plants from achieving their full genetic potential in our landscapes and urban forests. Plant health care has been practiced as long as modern arboriculture itself and, as a science-based concept, is an important component […]

An Introduction to Tree Appraisal (audio)

Lindsey Purcell is an ISA Board Certified Master Arborist (BCMA), an American Society of Consulting Arborists (ASCA) registered consulting arborist (RCA) and an urban-forestry specialist in the Department of Forestry and Natural Resources at Purdue University in West Lafayette, Indiana. Click below to listen to an audio recording of his November 2020 TCI Magazine article.

An Introduction to Tree Appraisal

There are three stated methods used to appraise trees and landscapes published in The Guide for Plant Appraisal, 10th Edition, authored by the Council of Tree and Landscape Appraisers (CTLA), published by the International Society of Arboriculture. These are Cost Approach, Income Approach and Sales Comparison Approach. The Guide is endorsed by all the major […]

Tree-Pruning Essentials: Part One

This is the first of a two-part series intended to provide essential information on making well-informed pruning cuts, based on the current standards. Part one will focus on the act of making the pruning cut and the types of cuts utilized in managing tree canopy. Part two will concentrate on what to prune, along with […]

Tree-Pruning Essentials: Part Two

This is the second part of a two-part series on the essentials of tree pruning. The first part (“Tree-Pruning Essentials: Part One,” TCI Magazine, April 2020) involved types of pruning cuts, making the cut and expected responses from the tree. In part two, we will cover what to consider pruning in order to create a […]

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