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Arborist News

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Arborist News

Learn more about palms in this second part of Palms: Woody Giants of the Monocots. This article explores symptoms of nutrient deficiency and other abiotic and biotic factors, including insects and diseases. (A,T,L,M,Bp) 

1 CEU
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Retail Price: $12.95
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AN cover Aug 2017

Are palms considered trees? That depends on whether you’re asking a botanist, ecologist, or forester. But no matter the specific definition used, as an arborist you may have to deal with palms. In Part 1, A.D. Ali and Leonard Burkhart, Jr. examine palm identification and pruning. (A,T,L,M,Bs)

1 CEU
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Retail Price: $12.95
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AN June 2017 cover

In this second podcast on Root Pruning, the authors look into selective versus non-selective pruning, dealing with stem-girdling roots, and how pruning can effect a tree’s long term health and stability. (A,Bs)

1 CEU
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April cover

Roots are a vital component to any tree's health. Recognizing and understanding the types of roots, and how they function is the first step in good root management. (A, Bs)

1 CEU
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February 2017 issue of Arborist News

Plant Health Care (PHC) is a holistic approach to evaluating a tree’s condition, taking into consideration both the plant and its environment instead of focusing on any single component such as insect pests or disease-causing organisms. (A,Bs)

1 CEU
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2016 December issue of Arborist News

The idea that rapidly growing trees are the most pest resistant and stress tolerant is highly ingrained. But is that always true? Trees face both abiotic and biotic attacks daily, and studies are beginning to question just how resistant they are, and whether cultural practices generally thought to help growing trees may in fact increase the stresses they face. (A,Bs)

1 CEU
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Retail Price: $12.95
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October 2016 issue of Arborist News

The fate of a tree can be jeopardized in all phases of a construction project, and the highest levels of success are achieved when the arborist is brought in as early in the process as possible. This month’s CEU article looks at the planning and design phases of managing trees during construction. (A,M,Bm)

1 CEU
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2016 August issue of Arborist News

Every tree has its own system for moving water and nutrients through stem and branch. Christine Balk and A.D. Ali explore this natural plumbing in trees. (A,M,Bs)

1 CEU
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June 2016 issue of Arborist News

Injection is an extreme, but sometimes necessary, step in addressing proper tree care. In this second part of Tree Injection, Shawn Bernick and E. Thomas Smiley examine the pros and cons to be taken in consideration when contemplating injection sites on a tree. (A,M,Bp)

1 CEU
ISA Members: $9.95
Retail Price: $12.95
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April 2016 issue of Arb News

Injection is an extreme, but sometimes necessary, step in addressing proper tree care. In Part One, Shawn Bernick and E. Thomas Smiley examine the pros and cons to be taken in consideration when contemplating tree injection. (A,M,Bp)

1 CEU
ISA Members: $9.95
Retail Price: $12.95
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February 2016 issue of Arborist News

Bark is a complex and important tree tissue. By better understanding bark structure and function, arborists will be prepared to interpret problems and apply protective mechanisms in managing landscape trees. (A,Bs)

1 CEU
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December 2016 issue of Arborist News

Lightning is an extremely powerful and pervasive force of nature, with an estimated 100 million strikes annually in North America. Authors E. Thomas Smiley, William Grahm, Jr., and Scott Cullen take a look at what can be done to protect trees, and the buildings and people around them. (A,T,L,Bp)

1 CEU
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