These ash at the Holocaust Memorial Boston were treated with a fertilizer containing nutrients, humic acid, surfactants and humectants designed to increase root development and reduce water stress. Photo courtesy of Arborjet. As most arborists know, one of the fundamental [...]

As a company delves into PHC, exploring the potential to be tree physicians rather than just tree morticians (general tree care), the array of possibilities can be overwhelming. The initial tendency is to focus on ways to control key insects [...]

The most important criteria of any rigging knot is to make sure it is tied, dressed and set before use. This means tying the knot in the right way, then aligning all the parts to function properly. TCIA staff photo. [...]

An elm zigzag sawfly (Aproceros leucopoda) larva feeding on an elm leaf. Photo by Gyorgy Csoka, Hungary Forest Research Institute, Bugwood.org. Given the hundreds of thousands of elms already lost in the last 100 years to Dutch elm disease, it [...]

Diagnosing the cause of plant problems is one of the foundational components of all plant-health-care programs. Without knowing the fundamental cause of a plant’s problem, it is highly unlikely that a successful remediation strategy can be designed and implemented. Environmental [...]