Arroyo Seco Foundation

The Arroyo Seco Foundation (ASF) is a community-based 501(c)(3) nonprofit organization dedicated to championing Southern California's most celebrated canyon, the Arroyo Seco, and promoting the use of California native plants in our landscape. The activities of the Arroyo Seco Foundation enable local residents and businesses to become directly involved in the protection and restoration of the Arroyo Seco. ASF also operates Hahamongna Native Plant Nursery in Pasadena, California, a retail outlet for native plants. The nursery is tucked away in the Hahamongna Watershed Park, not far from the NASA JPL. We propagate high-quality native plants for habitat restoration, conservation, and for home gardens. The nursery is open to the public on weekends throughout the year, with extended hours offered during peak growing seasons.