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​​History in Bloom: Celebrating 50+ Years of TreePeople

History In Bloom, a new exhibition, invites Angelenos to step into the origins of TreePeople. Beginning March 23 through April 8, 2026, History in Bloom opens to the public, offering a chance to explore more than five decades of environmental leadership, community action, and urban forestry innovation.  A Walk Through TreePeople’s History The archival exhibition…

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How Companion Planting Helps Grow Stronger, Healthier Plant Communities 

Just like people, plants work better together. They thrive in ecosystems, and benefit from having a diverse array of other plants nearby that they’ve evolved to grow in harmony with. That’s why when you’re restoring an ecosystem or planting a native garden, it’s a good idea to consider companion planting—the practice of growing plants near…

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After the Fire: How TreePeople Is Helping Nature Heal Near Castaic Lake

In January 2025, the Hughes Fire scorched through over 10,000 acres near Castaic Lake in Los Angeles County. It moved fast, pushed by high winds. Thanks to a rapid response from local fire crews, it was contained just as quickly—but not before it tore through 25 acres of land where TreePeople had been working for…

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Happy New Year from TreePeople’s CEO Dr. Cassie Rauser!

Dear TreePeople Community,  As we welcome a new year, I am deeply grateful to be writing to you for the first time as TreePeople’s CEO. It is an honor to join this remarkable organization and the extraordinary community that has sustained its mission for more than half a century.  Stepping into this role, I am…

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Give Beyond the Expected This Giving Tuesday

Discover Meaningful Ways to Support TreePeople’s Mission At TreePeople, every gift grows far beyond the moment it’s given. This Giving Tuesday, what if your generosity could plant more native trees, expand tree canopy to underserved communities, and strengthen environmental equity across Southern California? Whether you choose to give once or explore new ways to deepen…

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2025 TreePeople Gift Guide

The holidays are just around the corner, and if you’re STUMPED about what to get the environmentalist in your life, don’t fret—we have you covered!  From the granola girlie who likes to look cute while hitting the trails to the person whose whole personality is hating invasive species, we have a great gift option for…

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The Five Spookiest Native Plants in SoCal

Spooky season is here…step into our haunted native garden IF YOU DARE! From a stem parasite that can “see” and “smell” its hosts to a charming but deadly flower, here are five of the creepiest native plants you can find growing around SoCal: California dodder (Cuscuta californica) Have you ever noticed a strange, orange, spaghetti-like…

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Help us plant THOUSANDS of native milkweed plants to save the western monarchs!

The western monarch population has reached a near record low. According to the Xerces Society, fewer than 10,000 butterflies were found overwintering in California during their annual monarch count last winter—the second lowest number recorded since tracking began in the 90s.  Unfortunately, these beloved and essential pollinators face a myriad of threats across their migratory…

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TreePeople Appoints Dr. Cassie Rauser as its New CEO

Dear TreePeople Community, Late last year, I was truly honored to be elected the new Board Chair at TreePeople. Having grown up in Los Angeles, I have known about TreePeople most of my life. In fact, I went to high school just down the hill from Coldwater Canyon Park. Over the years, I have spent…

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School Greening Summer Update

As school greening work heats up, surface temps cool down Did you know that as part of our CAL FIRE grants, we are required to take surface temperatures before, during, and after construction for all project sites? Our team visits sites prior to construction with the design in hand, focusing on any surface that will…

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How to Create a More Tree-Friendly City 

Life in the big city is REALLY tough for trees. While trees in the wild often live 100 years or more, the average lifespan of an urban tree is just 19 to 28 years, according to the USDA.  What accounts for this discrepancy? Well, many of our urban environments aren’t built for trees—they’re built for…

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