Below are tools and resources to help you take root in your community — whether by planting a tree, volunteering for an organization (or running your own!), or simply digging deeper into the data behind how trees make our communities better.

Much of this comes from our Network members, as well as other sites we love. We try to narrow to the best of the best, to save you the time of searching. Are you a community group and see something missing or have an idea of something relevant to add? Please contact us!

Tip for browsing: Many of the links below will direct you to another website. If you want to save your spot on our page while opening a link, try right-clicking the link and selecting “open link in new window.” Use these buttons to jump to the content you’re looking for:

Our Latest Resources:

Oak Woodland Restoration Webinar

Oak woodlands are an important piece of the geography, history, and identity of California. These woodlands are rich in biodiversity and are essential to the vitality of our...

Trees for the 21st Century

California ReLeaf is excited to release Trees for the 21st Century, a guide of eight steps to cultivating a thriving, resilient urban tree canopy that benefits our...

Virtual ReLeaf Network Retreat

Thank you, everyone, who attended our Virtual Network Retreat. We hope you had a great time and learned a lot. We loved getting to see your faces and connect with everyone...

All Things Trees

Selection & Planning

  • Trees for the 21st Century is a guide produced by California ReLeaf that discusses eight steps to a thriving tree canopy, including the importance of tree selection.
  • SelecTree – This program designed by the Urban Forestry Ecosystems Institute at Cal Poly is a tree selection database for California. You can find the best tree to plant by attribute or by zip code.
  • Tree Quality Cue Card – When you’re at the nursery, this cue card helps you choose the best quality tree stock to plant. Available in English or Spanish.
  • The Sunset Western Garden Book can tell you more about your area’s hardiness zone and appropriate plants for your climate.
  • WUCOLS provides an assessment of irrigation water needs for over 3,500 species.
  • Getting ready to host a tree planting event takes some planning – Check out our Tree Planting Event Toolkit to get you started.


Care & Health

Great Sites to Know


Calculator & Measuring Tools

  • i-Tree – A software suite from the USDA Forest Service that provides urban forestry analysis and benefits assessment tools.
  • National Tree Benefit Calculator – Make a simple estimation of the benefits that an individual street tree provides.
  • Tree Carbon Calculator – The only tool approved by the Climate Action Reserve’s Urban Forest Project Protocol for quantifying carbon dioxide sequestration from tree planting projects.
  • ecoSmart Landscapes: Can help residential property owners estimate these tangible benefits.
  • Read more about the above tools here.
  • Database & Tree Tracking (presentation recording) – Three Network members share about how their organizations map and track trees at the 2019 Network Retreat.
  • Urban Ecos is a consulting company who can assist grant applicants to plan GHG reduction projects and quantify the benefits of trees.

Nonprofit Resources

Fundraising Tips & Tricks

Boards of Directors


Great Sites to Know


Diversity, Equity, & Inclusion

Leading with diversity, equity and inclusion (DEI) as our guide is critical in nonprofit programming. The resources below can deepen your understanding of DEI, racial and environmental justice, and how to incorporate it into your urban forestry work.

Websites to Know

Green Gentrification

Research shows that the threat of green gentrification is real in many cities, and it can lead to the displacement of longtime residents that many greening equity efforts are designed to serve.

Presentations & Webinars