Blog Archives

Pruning for the Structural Improvement of Trees

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While the majority of my work is as a Consulting Arborist, I have been pruning trees professionally since I started working for a tree service in 1992. I enjoy many things about pruning, including being outdoors, the climbing, the workout, … Continue reading

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Should we water our trees?

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Kelly asked me recently if we should write an article about watering our trees.  Now that a storm is just about here, I wonder if I should post this; but I don’t know for sure how much rain we will … Continue reading

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Bare Root Planting Season is Here!

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The following is a list of some of the benefits of planting bare root trees as opposed to container-grown or balled-and-burlapped stock. The root system is visible and girdling roots (circling roots near the trunk) are not common (Figure 1). … Continue reading

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Horticultural Considerations for Utilizing Coast Redwood in Northern California Landscapes

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By John Lichter, M.S., and Richard Evans, PhD. I want to share my observations concerning a malady that recently has caused widespread dieback and decline of coast redwood in Northern California. Since the pathogens associated with this malady seem to … Continue reading

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Correcting Leaf Yellowing in Alkaline Soils

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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, … Continue reading

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Practical Guidance for Effective Tree Irrigation

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John Lichter and Kelly McGlothlin, Tree Associates and Richard Evans, Evans Associates 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 … Continue reading

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Landscape Trees for the Central Valley: A List of Species, Attributes, and Environmental Tolerances

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 … Continue reading

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