Applying the New ANSI/ASABE S623 Standard for Estimating Landscape Plant Water Demands

By: Dennis Pittenger, University Of California Cooperative Extension

Thursday, September 29th ~ 8:30 - 10:00 AM

Dennis Pittenger, University Of California Cooperative Extension

Course Description:

In 2015, a new standard method for estimating landscape water requirements was formally released for adoption by landscape architects, landscape water managers, water conservation code developers, and others needing an easy yet scientifically defensible procedure. A technical committee composed of landscape water management experts from industry as well as academia across the US developed it. This new standard provides a simpler and more accurate means for estimating landscape water requirements than using WUCOLS or calculating a Landscape Coefficient. Participants will learn:
• Principle components of the new standard.
• Comparative advantages of the new standard over other methods.
• How to use the new standard to estimate landscape water requirements.


Dennis is a sought-after speaker and a nationally recognized expert in landscape water management, palm management, and care of woody landscape plants. He has conducted noted field research studies on landscape plant water needs, transplanting specimen palms, tree root management, and groundcover management. In both 2010 and 2011, he received the Arboriculture Research Award from the Western Chapter of the International Society of Arboriculture. Dennis holds a M.S. degree in Horticulture from Ohio State University and is a member of the American Society for Horticultural Science, International Society of Arboriculture, Metropolitan Tree Alliance, and California Landscape Contractors Association. He joined the University of California Cooperative Extension and the Botany and Plant Sciences Department at U.C. Riverside in 1981.

Dennis works closely with industry groups and University colleagues to carry out field research studies and deliver educational programs for landscape-related professionals. He has authored or co-authored over 225 research articles and educational publications reporting and applying research findings to educate the landscape industry on many subjects. Dennis is the technical editor and co-author of the award-winning California Master Gardener Handbook, the University of California’s comprehensive basic horticulture reference. He also leads U.C. Cooperative Extension’s Web-based Center for Landscape and Urban Horticulture.

Click Here to register for the EXPO and select seminars.

Send Your Staff to the Expo

Make Attending the Expo a Corporate Event!
To Help Your Business & Career
See the Newest Equipment and Products

• Negotiate Year End and 2017 Equipment Deals
• Get More from Your 2016 and 2017 Budgets
• Negotiate Supply Contracts
• Find New Suppliers / Lower Expenses
• See State-of-the-Art Technologies and Techniques
• Connect with Old Friends & Build Your Network

Special Events

Lawn Mower Races

Water Conservation Area

Green Industry Hall of Fame

Networking Events

New Product Area


Commercial Landscape Professionals from across
the region will be at The Landscape Expo. This includes Owners, Principals, Partners, Superintendents and Managers with a direct influence on Purchasing decisions. Whether it's Landscape Installation, Maintenance, or Design, this is your event!


Nor Cal Attractions

Great opportunity for your family vacation! -

Local Attractions near CAL Expo