Learn How to Grow Native Plants at the Hahamongna Nursery

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ORGANIZATION: Arroyo Seco Foundation


Here's a great way for you to get involved in protecting and restoring the environment.

We need your help at Hahamongna Native Plant Nursery! We propagate native trees and plants, pot up seedlings, and there's always more weeding to tackle. Then we head out into the Arroyo Seco Canyon to use the plants in a stream restoration program in the Arroyo Seco Canyon just above Jet Propulsion Laboratory in the foothills of the San Gabriel Mountains! We also grow plants to beautify local homes, businesses and public places.

Hahamongna is that special place where the Arroyo Seco River comes out to the majestic San Gabriel Mountains. The Arroyo Seco Foundation, which runs Hahamongna Native Plant Nursery, is working to restore and enhance the Arroyo Seco and its watershed.

Native plants -- like oaks, willows, laurel sumac, buckwheat and scores of other species -- are vital to the Arroyo stream and to our local environment. They provide the habitat and conditions for wildlife and a healthy ecosystem. You will be able to learn about these plants and their importance in preserving and enhancing our communities and the environment. You'll learn the importance of stewardship and "giving back," while you watch your plants grow and thrive.

This kind of stewardship is the path to preserve the past and to ensure a future of healthy land, water and air for current and future generations. And it's a lot of fun and very rewarding.

Come share in this great program.

Directions to the nursery:


4 More opportunities with Arroyo Seco Foundation

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About Arroyo Seco Foundation


PO Box 91622, Pasadena, CA 91109, US

Mission Statement

The mission of the Arroyo Seco Foundation is to preserve and enhance the Arroyo Seco from the San Gabriel Mountains to the Los Angeles River, reforest our region and promote environmental and cultural awareness of one of Southern California's greatest natural resources.


The Arroyo Seco Foundation (ASF) is dedicated to protecting and promoting the Arroyo Seco watershed. ASF advocates an integrated, harmonious approach to watershed and flood management, water conservation, habitat enhancement as well as the expansion of recreational opportunities. Through action projects, recreation and environmental awareness activities, ASF strives to involve the residents and organizations in our region in this tremendous enterprise. ASF works to reforest the Arroyo Seco, the San Gabriel Mountains and the neighboring urban landscape with native shrubs and trees.

The activities of the Arroyo Seco Foundation enable local residents and businesses to become directly involved in the restoration of the Arroyo Seco and in the recreational and environmental opportunities available

Major Projects include:

  • Arroyo Seco Watershed Restoration -- This comprehensive approach to mountain and urban watershed management is a partnership of ASF and and the many organizations of the Council of Arroyo Seco Organizations (CASO).
  • Tours and Educational Events -- ASF offers a variety of types of tours of the Arroyo Seco and a series of educational programs about the habitat, culture and history of the Arroyo Seco.
  • Hahamongna Native Plant Nursery - ASF grows and cares for native and California-Friendly trees and plants at our nursery.

For more information or to get involved, please contact us.


Animals, Community, Environment


We'll work with your schedule.


Hahamongna Native Plant NurseryHahamongna Watershed Park4550 Oak Grove DrivePasadena, CA 91103


  • Environmental Education
  • Environmental Science
  • Habitat Restoration
  • Gardening
  • Botany
  • Horticulture


  • People 55+
  • Group


  • Orientation or Training
  • Several hours a month during the week or on weekends.
  • Bring sun protection and drinking water.

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