Urban trees must cope with a constant parade of assaults. They live amid polluted air, grow in confined areas and suffer scars from delinquents and ne’er-do-wells. However, these damaging deeds pale in comparison to the primary threat facing...
Tree bark is roughly akin to the skin of animals; it helps to define the boundary between the internal and external world, and it provides protection against a variety of threats. While bark fails to attract the same level of attention that...
DRAFT
Today, we wanted to talk about an avoidable, but all too common, threat to your trees: girdling. Girdling occurs when something wraps around a tree branch or trunk, and causes damage to the tree’s vascular tissue. Severe girdling damage...
Different tree species have different characteristic features. The leaves of a maple tree (
Acer
spp.), for example, differ from those of a sycamores (
Platanus
spp.); just as the bark of pine trees (
Pinus
spp.) differs from that of...
Trees help to reduce the local temperatures in a variety of ways.
Among the most important ways that they do so include the process of transpiration, in which trees draw water from the ground and pump it into the air and through the...
We are pleased to announce that on June 16, 2015, Arborist Now received accreditation from the Tree Care Industry Association (TCIA). But what, exactly, does that mean?

The Basics
The Tree Care Industry Association is a trade...
Common Traits of Invasive Species
Quick quiz: What do the following species have in common?
Bed bugs (Cimex lectularius), fountain grass (Pennisetum setaceum), giant reed (Arundo donax), gold spotted oak borers (Agrilus coxalis), quagga...
The more ecologists learn about the world, the more it becomes apparent that all living things are connected. Trees provide numerous examples of this, as even youngsters understand that trees provide animals with fruit, shelter and other...
Improper pruning practices can weaken even the healthiest trees. In especially tragic cases, improper pruning can lead to the tree's premature demise. Such is often the case whenever trees suffer a particularly horrible pruning practice called “topping."
The benefits trees provide are simply too numerous to catalog. In addition to providing humans with a number of basic needs – including relatively important things like oxygen and food – trees improve property values, reduce crime rates and ...