Green Rx

Trees are integral to our health. People who live near trees report better general health and fewer health complaints.

Green Prescription: The Study

The Green Prescription research study used health data collected by the University of California Los Angeles for their California Health Interview Survey (CHIS) to evaluate the connection between the amount of tree canopy and human health (population health/public health).

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Green Prescription: The Map

This map of our six-county region is a product of our new study linking tree canopy to human health: Green Prescription. 

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Green Prescription: The Partners

This study would not have been possible without the commitment and support of our partners and supporters.

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How-To See all

Choose the Best Tree for your Space!

Find ideal trees for your space by searching our Shady Eighty database for tree characteristics you’re most interested in! We created a list of the very best trees for our region and now you can easily search our online database for trees that meet your needs. Happy planting!

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Care for your Roots

Roots work hard to keep your tree healthy, strong, and anchored into the ground. Learn how to care for your roots so they can thrive underground.

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Events See all

Planting at Southwoods Park


Saturday, February 23 8:45A - 12:00P

Make a difference in your neighborhood by joining us to plant some trees at Southwoods Park that will beautify this area for generations to come.


Planting at Fisherman's Lake


Saturday, March 2 8:45A - 12:00P

Come help reforest Fisherman's Lake! Spend a morning with us getting dirty and helping the environment.


California Arbor Week Planting at Valley Hi Park

Valley Hi Park

Saturday, March 9 8:45A - 12:00P

Join us to plant 20 trees at Valley Hi Park in celebration of California Arbor Week!