Training

Photo 2: Recent research has shown that heart rot is very common in both young and older street and landscape trees. In most cases, heart rot does not threaten tree stability or longevity. Photo courtesy of Chris Luley.

Heartwood and Heart Rot, Part II: Heart Rot – Is It Serious?

Part 1 of this two-part series, “Heartwood and Heart Rot, Part 1: Are They Important to Arborists?” ran in the May 2023 issue of TCI Magazine. Heart rot sounds serious or possibly fatal, like heart-related health issues in humans. In practice, heart rot in trees is simply the decay of wood in the center of […]

Figure 2: When the load moves down the line, the vector (green arrow) will increase the load on the anchors (orange arrows).

Vectors: One System for Putting Less Stress on the Tree and Climber

As with any technical undertaking, there are various ways to mitigate or dissipate force in our rigging systems. From simple to complex, we have several variables we can manipulate to achieve a common goal of putting less stress on the tree, system and climber. This article will discuss one such method. The goal is to […]

We need to make sure we are thinking about what we are working with and consider the limitations.

Where Is the Weak Link?

Do you think about weights when rigging, or just tie stuff on and proceed to cutting? Are you someone who spends time factoring in angles, vectors and the system that needs to be built for the task ahead, or are you just throwing a rope up there and hoping for the best? When’s the last […]

Bio Char startup

The Business of Biochar

In February 2024, The Davey Tree Expert Company fired up its new biochar facility in East Dundee, Illinois. The facility recycles wood waste from its many client properties in the Chicago area and turns it into an environmentally friendly soil additive, biochar. “Biochar is a carbon-rich, charcoal-like substance that offers many benefits to the soil,” […]

Photo 3: Field trial of transplanted spruce trees.

Mad For Mulches: Single-Species Mulches Can Provide Many Benefits

The benefits of a woodchip mulch layer over the root system of a tree are now widely recognized. These include conservation of soil moisture to reduce the detrimental effects of drought and weed suppression, and, as the mulch layer is degraded, the nutrients released provide a valuable organic fertilizer. In this article, we’ll look at […]

Click to listen highlighted text!