Sustainable landscapes are responsive to the environment and can positively contribute to the development of healthy communities. [They] help sequester carbon, clean the air, promote water conservation, prevent resource depletion, and create value through significant economic, social, and environmental benefits.
http://cityminded.org/designing-for-future-sustainable-landscapes-8529

By 2020, most regions of California "will implement practices for the built landscape, reducing critical resource use, protecting water quality, and improving ecological health for our communities."
(ReScape California)

Organizations

• California Native Plant Society (CNPS)
• California Invasive Plant Council (Cal-IPC)
• Gardening With Natives (GWN)
• MEarth Carmel
• Theodore Payne Foundation

CA Native Public and Botanic Gardens

• Friends of the Regional Parks Botanic Garden
• Pacific Grove Natural History Museum
• Rancho Santa Ana Botanic Garden
• Santa Barbara Botanic Garden
• UC Berkeley Botanic Garden
• UC Santa Cruz Arboretum

Associations

• Association of Professional Landscape Designers (APLD)
• California Landscape Contractors Association (CLCA)
• Monterey Bay Friendly Landscaping
• ReScape California (Bay Friendly Landscaping and Gardening Coalition)
• Surfrider Foundation
• Ocean Friendly Gardens