WUCOLS is the acronym for Water Use Classifications of Landscape Species. Created by California state agencies, it classifies every landscape plant typically available in the nursery trade.

WUCOLS Home Page   User Manual explains water use criteria. Plant database search tool by City.

MWELO – Model Water Efficient Landscape Ordinance for California

Water Agencies

California Department of Water Resources – DWR

California Water Science from US Geologic Survey

UCANR – Agriculture and Natural Resources – University of California gardening resources

The California Gardening Web University of California

California Master Gardeners – Find a California Master Gardener by County

Association of California Water Agencies – Contact your local agency. Excellent resources

East Bay Municipal Utility District

– Contra Costa Water District

– San Francisco Water Public Utility District

– Metropolitan Water District (Los Angeles)

Municipal Water District Orange County

– San Diego Water Authority

Plant Societies

Books and Websites

Gardening in Summer-Dry Climates Nora Harlow and Saxon Holt

The Dry Gardening Handbook Olivier Filippi

Calscape – California Native Plant Society plant database

Save Our Water State of California Water Conservation tips and action

Drought Portal California official website

Be Water Wise Southern California gardening advice from Metropolitan Water District

Rescape formerly Bay Friendly Landscapes Coalition

Water Efficient Landscaping Guide from California Department of Water Resources

Water Education Foundation

California Center for Urban Horticulture

Gardening in Mediterranean Climates Worldwide

California Drought from Pacific Institute

California Association of Resource Conservation Districts – CA Agriculture

Defensible Space – Fire safety garden design

Nursery Websites

San Marcos Growers  – Wholesale, Excellent Plant information

Mountain States Nursery – Wholesale

Australian Native Plant Nursery – Ventura

Tree of Life California natives

Devil Mountain wholesale

More Photos

More photos of drought tolerant plants and gardens found at PhotoBotanic http://photobotanic.photoshelter.com

Royalty Free License of all photos at summer-dry.com – Gallery