Alex Shigo, father of modern arboriculture, burst on the arboricultural scene in the early 1980s with his theory of compartmentalization of decay in trees, CODIT. With this he changed our collective thinking about trees. He created a revolution in [...]

When you walk out from a safety lecture by Dr. John Ball, you definitely feel better informed, but it’s also likely you feel a little unnerved. That’s because the professor shows slides one after another of the grim side [...]

For many, the transition from a job to a career in arboriculture starts with the purchase of the “ISA Arborist Certification Study Guide.” And when making that leap, it feels even more official when that certificate comes in the [...]

In an issue dedicated to the “legends” of the industry, there’s no avoiding the name Mark Chisholm. His official tree-climbing career began more than 40 years ago, at age 12, helping with his dad’s business on weekends. He was [...]

Ever wonder about that large, sturdy, fully grown tree standing as a centerpiece amid the show booths, equipment and convention goers at TCI EXPO? It’s there every year and is used for demonstrating myriad things related to what many [...]