Who We Are

Born from the efforts of a teenager over 50 years ago, TreePeople inspires and supports the people of Southern California to come together to plant and care for trees, harvest the rain, and renew depleted landscapes. TreePeople has activated more than 3 million people in planting and caring for more than 3 million trees.

TreePeople unites with communities to grow a greener, shadier, and more water-secure city in homes, neighborhoods, schools, and the local mountains. We work with both educators and students to train the next generation of eco-conscious leaders. We steward thousands of acres of land—maintaining habitats and protecting land from development. We develop original, actionable research that drives science-based policy. We train volunteers on the ground to help build a greener Southern California.

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Our Focus Areas


Providing students, teachers and the school community with the knowledge, tools and support they need to create environmental change.


Restoring ecosystems, planting trees, and incorporating nature-based solutions from Southern California urban streets to our greater watershed.

Policy & Research

Conducting cutting-edge research and facilitating policies that support nature-based solutions.


Working towards environmental and social justice among environmentally stressed communities.

Get Involved


Volunteering with TreePeople is fun and rewarding. Our events empower you with the support, training and tools you need to be an engine of change. Join us each week as we plant and care for trees throughout Los Angeles, remove invasive species and maintain our projects throughout Southern California.

The Canopy

Canopy funds will directly benefit our initiatives in urban and school greening for underserved communities, support our wildfire restoration initiatives, and allow us to provide environmental education to thousands of students each year.

Visit Our Parks

Imagine watching the lights of Los Angeles fade and the stars appear or walking down the trail learning something new about the natural environment, including native plants that you can use in your own garden! Join TreePeople educators for a variety of guided activities that are fun, informative and designed for the whole family. Depending on the time of year, a variety of options are available.

Native Plants E-Book

Our highly anticipated native plant guide, “Southern California Native Plants: A Starter Guide from TreePeople” is now available for free download! This beautifully illustrated e-book is chock-full of TreePeople’s favorite native plants and trees, garden planning tips, maintenance hints, planting requirements, and other helpful resources.


For nearly 50 years, TreePeople has planted over 3 million trees with 3 million volunteers across Southern California. Purchasing these products helps us plant and care for the next 3 million!

TreePeople Works

How TreePeople is Greening Schoolyards

In the preface to Claire Latané’s Schools That Heal, she reminds us that “It is hard to make healthy schools. Even in neighborhoods that have plenty of resources, most school environments fall short of supporting students’ mental and physical health and well-being.” TreePeople’s School Greening initiative aims to collaborate with school communities to reimagine how…

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The Urban Forest Loses a Giant: Mourning the Loss of Jarlath O’Neil-Dunne

The urban forestry community lost a giant with the sudden passing of Jarlath O’Neil-Dunne on January 6. Jarlath led a globally respected lab that used high-resolution imagery of the earth to map land cover in our complex urban landscapes at fine level of detail with astounding accuracy. The work of Jarlath’s Spatial Analysis Lab at…

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How to Prevent Your Trees From Falling During Storms

If you were in Los Angeles over the weekend, you no doubt felt the wrath of the winds! A wind advisory remained in effect across Los Angeles, Ventura, and Santa Barbara counties throughout the weekend with gusts ranging from 25 mph to 50 mph across the region. Unfortunately, the winds brought dangerous conditions to the…

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2023: TreePeople’s Work In Review

We want to thank our entire TreePeople family for making our 2023 one to remember. It’s with your help that we were able to grow our work into new communities, expand our restoration presence in our local mountains, and bring some amazing talent back to our Coldwater Canyon Park headquarters for spectacular events. We launched…

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