Gypsy Moth Outbreak in Massachusetts

Earlier this year, Massachusetts, Rhode Island, and Connecticut were beset by the most severe outbreak of gypsy moth since 1981. The rapacious insects were especially…

Common Tree Diseases: Anthracnose

Anthracnose is a group of fungal diseases that affect many deciduous and evergreen tree species. It causes dark sunken lesions to appear on leaves, stems,…

ANSI Standards

The American National Standards Institute (ANSI) was founded in 1918 as a private, non-profit membership organization dedicated to promoting voluntary consensus standards. The purpose of…

OSHA Laws and Regulations

The Occupational Safety and Health Administration (OSHA) is a subset of the United States Department of Labor. It was created in 1970 as a result…

Diagnosing Nutrient Deficiencies in Trees

Nutrient deficiency is a common affliction that affects deciduous and evergreen trees. Trees that become nutrient deficient often experience a drastic reduction in their functional…

Dr. Alex Shigo: A Short Biography

Dr. Alex Shigo was a renown biologist and plant pathologist. He is widely considered the father of modern arboriculture. Shigo’s study of trees and their…

What to Do About a Dying Tree

Landscapes are often replete with trees, many of which flourish, expanding outwards as they develop. But there are occasions when a tree can become stressed,…