Author Archives: John Lichter/Tree Associates

About John Lichter/Tree Associates

Owner, Tree Associates Professional Consulting Arborists ASCA Registered Consulting Arborist #375 ISA Board Certified Master Arborist #863B Call us if you need a tree expert!

How Long Should I Run My Sprinklers?

Many tree owners and managers are saving water and letting lawns and groundcovers die during this drought and I am seeing many trees suffering from drought stress. When asked how to care for trees during the drought, I typically suggest watering drought tolerant trees … Continue reading

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Your Trees Need Irrigation During This Drought

As this summer progresses, I am seeing more and more trees suffering from drought stress. This is largely due to our irrigating less to save water, comply with governmental regulations and save money. While these are very important reasons to … Continue reading

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Successful Tree Preservation in Davis, California: The Result of Professional Cooperation and Effective Communication Considering Tree Biology and Architecture

John Lichter, M.S. Owner, Tree Associates ASCA Registered Consulting Arborist, ISA Board Certified Master Arborist Steve Pro, Owner of Morningstar Builders, asked me to prepare an Arborist Report, including a tree evaluation, impact assessment and preservation plan, to meet City … Continue reading

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Tree Risk Assessment and Formative Pruning Can Improve Safety and Reduce Liability

Posted by Kelly McGlothlin, M.S., Associate Arborist The structural development of trees in unpopulated areas is not a problem since there are usually not any targets of concern when a tree falls or loses a limb.  But in urban settings, trees … Continue reading

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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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