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We are the Arbor Day Foundation

We’re a global nonprofit inspiring people to plant, nurture, and celebrate trees. In the face of a changing world, we’re scaling our efforts to plant 500 million trees by 2027 in areas where they’re needed most. With a strong network of global partners, a science-based approach, and more than 50 years of planting trees all over the world, we know what it takes to make it happen.

Help us plant more trees, educate more people, get more hands in the dirt, and support more lives across the globe.

Plant Trees Now

Stories from the Ground

How to Measure Biodiversity Using Trees

As a backbone of our ecosystems, the story of trees is inseparable from the story of biodiversity on this planet. With unprecedented biodiversity loss, it’s not enough just to plant trees — learn how we use science to plant them where they’ll have the biggest impact.

Learn how science helps us safeguard biodiversity through trees.

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Arbor Day 2024

Celebrate the tree planter's holiday.

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Join today and receive 10 free trees.

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Corporate Partnerships

Make a global impact with trees.

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Find nursery trees, gifts, and more.