Who We Are

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.

Born from the efforts of a teenager over 50 years ago, we have involved more than 3 million people in planting and caring for more than 3 million trees.

We unite with communities to grow a greener, shadier and more water-secure city at homes, neighborhoods, schools and in the local mountains. We work with volunteer leaders using our unique Citizen Forester model, and we influence government agencies for a healthy, thriving Southern California.

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Our Focus Areas


Working towards environmental and social justice among environmentally stressed communities.


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.

Key Initiatives


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.

Tree Dedications

Tree Dedications are back. Save paper and trees by sending a digital card automatically!


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!

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 Park

Visit Our Park

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.

T.R.E.E. Talks Series

TreePeople’s signature public lecture series, bringing together thought leaders from a variety of environmental topics to discuss the future of our movement.

TreePeople Works

TreePeople Impact Report

In 2022 TreePeople continued to adapt to our changing times; we were able to center our purpose around the communities we serve through a return to connecting with people face-to-face, classroom-to-classroom, and volunteer-to-volunteer, in addition to providing online resources and education. TreePeople’s Coldwater Canyon Park is once again welcoming groups of excited schoolchildren to experience Eco…

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Native plant garden illustration

What I Learned Planting My Native Garden

Are you thinking of replacing your lawn with a native garden? Turning your yard into a native landscape can be a powerful tool in protecting local habitat, saving you money on your water bill and lowering your carbon footprint. It can seem like a daunting challenge: where do you start, how hard is it to…

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TreePeople and Water In Southern California – A Decades Long Push for a Resilient Future

“The story of Los Angeles is the story of water,” remarks Peter Massey, TreePeople’s Project Manager of Water Equity Programs, noting how California’s modern history is so deeply intertwined with water issues.  The booming population expansion and growth into an agricultural superpower that defined California in the 20th century would not have been possible without…

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TreePeople’s 2022: A Big Year for a Greener California

As 2022 comes to a close, we here at TreePeople are looking back at what was an exciting year for creating a greener future across Southern California. With the help of people like you – our volunteers, our donors, those who spread the word, and those who fought alongside us to push for resilient cities,…

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