Arroyo Seco Foundation

Your Contribution Is the Best Local Way to Respond to the Environmental Challenges of Our Times

Help Heal Hahamongna

A Restored Berkshire Creek

Rainbow Trout

Save the Raymond Basin

SoCal's Best Plants

We need your help to protect and enhance our region's greatest environmental treasure!

A Critical Time for Preserving The Arroyo Seco

This is a very exciting and dynamic time for the Arroyo Seco—that great canyon that flows through our communities to link the San Gabriel Mountains all the way to downtown Los Angeles. We have accomplished a lot recently, and now plans are being developed to establish an environmental education at Hahamongna, to restore more natural conditions along the Arroyo, and to promote ecosystem health and biodiversity.

Your contribution will help support vital preservation and restoration efforts, volunteer activity and educational campaigns, while protecting our region's greatest natural treasure for future generations. Please give generously so that we can continue and expand our work to protect and enhance the Arroyo!

The Arroyo is a River

Your generosity is greatly appreciated.

The Arroyo Seco Foundation is a registered 501(c)(3) non-profit organization, #95-4328068. All donations are tax deductible to the fullest extent allowed by the law. Please consult your lawyer, financial advisor or tax consultant for complete advice about the tax advantages or consequences of your contribution.

Arroyo Seco Foundation, Mailing Address: PO Box 91622, Pasadena, CA 91109-1622 (323) 405-7326 |

Hahamongna Native Plant Nursery, 4550 Oak Grove Drive, Pasadena, CA 91103 | (626) 657-0392 |