Services Offered

We are independent, private consulting arborists offering objective consulting services. We believe that our role is to speak for the trees, and we aim to strike a balance between the best interests of the trees and the needs of our clients. We pride ourselves on honesty, integrity and timely completion of work. Our office is located in Santa Monica, California.

Click on a link below to learn more about some of the services that we offer.

Virtual site visits
Oak preservation
Tree risk assessment

Disease and pest diagnosis
Restorative pruning recommendations
Tree preservation during construction
Oak compatible landscaping
Tree value assessment
Expert witness

 

 

Some of our projects involve only one tree, while others involve thousands. Our clients include:

  • individual private homeowners
  • homeowner associations
  • non-profit organizations
  • cities and counties throughout Southern California
  • public and private schools and universities
  • builders, developers and architects.

We do not offer the following services:

  • Pruning
  • Cabling or bracing
  • Injections or fertilizer treatments
  • Landscape installation

Virtual site visits
We are constantly looking for ways to reduce the environmental impact caused by the way we work and live. One issue that has always troubled us is driving our work vehicles all over the southland to examine people’s trees. It occurred to us that in a few cases, we might be able to do a reasonable job without actually seeing the trees in person. The idea of a “virtual site visit” was born.

If you have limited needs, and can send good quality digital photos via email, we may be able to help you without driving to your location. Click here for details.

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Oak preservation
When people decide to build near oak trees, many local governments require that an arborist be hired to consult on the project and generate a report. In some areas, an arborist must be hired to monitor the condition of protected trees during and after construction. We have extensive experience with various municipalities throughout Southern California, and a very good understanding of the process.

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Tree risk assessment (hazard evaluation)
We use our experience and knowledge of tree biology and structure, combined with observations about the tree’s environment and the history of the site, to evaluate whether a tree presents an unacceptable risk of failure. Although no tree can be made absolutely “safe,” we may be able to recommend ways to reduce the risk of failure. In some cases, we may suggest testing a tree for decay by using a Resi® (another service we provide).

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Disease and pest diagnosis
With non-invasive methods, we inspect trees for signs and symptoms of pests and disease. Once we determine what is afflicting the tree, we recommend what (if anything) can be done to improve the situation.

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Restorative pruning recommendations
Whether a tree has broken or been improperly pruned in the past, we can work with you to improve the branch structure of the tree. Although we do not prune trees ourselves, we advocate the industry pruning standards set out by the American National Standards Institute [ANSI A300 (Part 1)].

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Tree preservation during construction
With careful foresight and consideration, we can help you preserve the health of your trees throughout the construction process by providing design input in the planning stages and/or monitoring tree condition during construction. We can recommend how and whether to cut roots, or how to prevent soil compaction.

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Oak compatible landscaping
Oak trees generally require site conditions that may not be compatible with common landscaping practices in Southern California. We can guide you through the process of maintaining a pleasing landscape in the vicinity of oak trees, through proper selection of drought-tolerant plants and appropriate irrigation practices.

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Tree value assessment
Using the Council of Tree & Landscape Appraisers (CTLA) Guide for Plant Appraisal 9th ed. we determine the monetary value of a tree. Tree appraisals can be a useful tool in legal affairs, personal disputes and insurance claims.

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Expert Witness
Jan does selected court work as a “consulting forensic expert” or as a “testifying forensic expert”.

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