The Britton Fund’s Technical Information Sheets translate the latest arboricultural research into practical, easy-to-use guidance for tree-care professionals, urban foresters, landscape managers, and anyone committed to healthier trees.

Made possible through the generosity of our donors, each Technical Information Sheet is first published exclusively in Western Arborist magazine for members of the Western Chapter International Society of Arboriculture (WCISA). Following publication, the sheets are made available as a free download through The Britton Fund, extending the reach of this valuable, science-based information to the broader tree-care community.

Written by leading researchers and subject-matter experts, these concise resources simplify complex topics into clear recommendations, best practices, and practical solutions that can be applied in the field. Covering subjects such as tree health, pruning, soil management, irrigation, mulching, pest management, and urban forestry, the Technical Information Sheets help professionals stay current with emerging research while supporting healthy trees and resilient landscapes throughout California, Hawaii, Arizona, Nevada, and beyond.

Trees Damaged by Fire
What Not to Do and What to Do
Guide sheet produced by The Britton Fund Board of Directors

Southern California’s recent devastating fires have destroyed countless homes and businesses. As recovery begins, it’s essential to understand the critical role surviving trees play in the environment.

Download a PDF copy of this two-page guide on caring for fire-damaged trees.

We are proud to support Dr. Linda Chalker-Scott as she produces ten new web-based Technical Information Sheets for your personal and professional use. Dr. Chalker Scott is Extension Specialist and Professor Emerita, Washington State University and is editor of the Western Arborist magazine. She has extensive experience in researching and writing peer-reviewed, science-based Extension fact sheets. 

Click on a title below to download your PDF copy. Check back for additional guides. 

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Woodchip mulch is one of the most effective tools for protecting landscape trees from heat and drought stress. This five-page Technical Information Sheet explains how arborist woodchips improve soil health, conserve moisture, and support healthy roots while dispelling common misconceptions about their use.

4. Woodchip Mulches for Landscape Trees
Spanish version: Mantillos de Astillas de Madera para Arboles de Paisaje

3. Selecting Woody Landscape Species to Enhance Biodiversity
Spanish version: Selección de Especies Leñosas para Paisajes y para Mejorar la Biodiversidad

2. Improving Soil Conditions in Urban Sites

1. Diagnosing and Treating Sources of Water Stress in Urban Landscapes

The following ten Technical Information Sheets, developed by Helen Stone and Dr. James Downer, address key topics relevant to arborists both within the WCISA region and beyond. Each sheet offers valuable insights and guidance on issues that matter to tree care professionals, providing expert knowledge and practical tips for a wide audience.

Click on the titles below to download each PDF or download the complete set here.

1. Managing Trees During Drought and Water Restrictions

2. Maximizing Benefits of Trees in Hot Climates

3. Caring for Old Native Oaks

4. Planting and Early Care of Trees

5. Improving Soil Conditions Around Existing Trees

6. Managing Infrastructure Conflicts with Trees

7. Maintaining Palm Trees

8. Diagnosing and Rectifying Salt Toxicity

9. Responsible Wood Waste Management

10. Trees, Water and Irrigation

Invest in the Future of Tree Care.
The Britton Fund advances arboriculture through research, education, professional training, and community outreach across the West. Your support helps deliver practical, science-based resources to the people caring for our urban forests every day.

Join us in supporting those who care for trees.
Donate today.