“John is a consummate professional and is an innovative and uncompromising arborist. I have enjoyed several collaborations with John over the years and look forward to many more.”
—David Kelley, President/Owner, K&AES, Inc.

Articles

Practical Guidance for Effective Tree Irrigation

Posted on June 21st 2011

In our experience, irrigation is the most important management concern for trees in most of California. Unfortunately, myths and misinformation abound in this area, leading to much confusion regarding how to effectively irrigate trees. The following series of questions and answers aims to provide practical, horticulture-based knowledge to ensure healthy trees. What are the symptoms…
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Correcting Leaf Yellowing in Alkaline Soils

Posted on March 29th 2011

Many plants growing in our region of California suffer from the chronic occurrence of leaf yellowing, or chlorosis. Chlorosis is the result of the loss of the green pigment, chlorophyll, which is essential to the process of photosynthesis. In effect, chlorotic plants suffer from a food shortage, which has consequences that range from unsightliness and…
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Landscape Trees for the Central Valley: A List of Species, Attributes and Environmental Tolerances

Posted on November 30th 2010

Selecting a tree species considering its environmental tolerances and growth attributes is a pre-requisite for successful landscape performance.  The following table presents critical arboricultural information for over 100 trees to assist the land manager in selecting an appropriate tree species for a particular landscape. This table is a compilation of information from several references (see…
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