Primary support for WUCOLS IV was provided by the California Department of Water Resources (DWR) Water Use Efficiency Program. The authors gratefully acknowledge DWR for its sponsorship and sincerely thank Kent Frame and Julie Saare-Edmonds for their collaboration and assistance in bringing this project to a successful completion.

The California Center for Urban Horticulture (CCUH), University of California Davis, played a key role in supporting the 4th edition.  We thank Dave Fujino, CCUH Executive Director, for his work to ensure that the WUCOLS update was included as part of a larger DWR-funded landscape water conservation project. In addition, CCUH secured support from a wide range of green industry organizations (listed below) and established a critically important partnership that was essential for the completion of this work. The authors gratefully acknowledge the following organizations for their sponsorship of this 4th edition of WUCOLS. Without their support, this project would not have been completed.

  • Association of Professional Landscape Designers (APLD)
  • American Society of Irrigation Consultants (ASIC; north and south)
  • American Society of Landscape Architects (CCASLA)
  • Cagwin & Dorward Landscape Contractors
  • California Association of Nurseries and Garden Centers (CANGC)
  • California Landscape Contractors Association (CLCA State)
  • California Landscape Contractors Association (San Diego Chapter)
  • Glenn Schmidt Landscaping, Inc.
  • Regional Water Authority (Northern California)
  • San Diego County Water Authority
  • Water Forum

Most importantly, the authors sincerely thank all thirty-six members of the regional committees for their outstanding contributions to this project. Needless to say, WUCOLS IV would not have been possible without their efforts, which were highly impressive both in terms of quality and quantity.  California is truly fortunate to have such talented individuals who are willing to share their, time, knowledge and experience. 

Finally, thanks to Ralph Evans (Bamboo Headquarters, Vista, CA) and Bob Hornback (Muchas Grasses, Occidental, CA) for their reviews of regional committee evaluations of bamboos and ornamental grasses, respectively.