The general identification terms of sapwood and heartwood are used in many aspects of the plant sciences, especially in arboriculture. These terms are used loosely by many practitioners to identify the outer portion of a branch or stem and the [...]

Having worked for the same tree company for 42 years – starting when he was 19 – Tony Wilber has a steady handle on tree work, safety and crew training. But, he says, “Every day is a learning experience.” [...]

When out in the field as a trainer, or attending sessions as a trainee, sometimes we run across other trainers who have never used the technologies at their fingertips to their fullest potential. So, in an effort to train [...]

In August 2022, Tree133 experienced a climber fall resulting in a severe injury. For a well-respected company owned by a recognized trainer, this was an unthinkable event that challenged everything we believed about ourselves and our company culture. The [...]

Trees in our urban forest may present an unacceptable level of risk for the tree owner or manager. This is where an arborist trained in tree-risk assessment can identify the issues and provide mitigation options to reduce the risk [...]