Friends of the Urban Forest: Friends of the Urban Forest (FUF) is a non-profit organization founded in 1981 that helps individuals and neighborhood groups plant and care for street trees and sidewalk gardens in San Francisco. This “green infrastructure” improves the city by beautifying neighborhoods, cleaning the air, raising property values and reducing polluted stormwater runoff.

CalFire: The mission of the California Department of Forestry and Fire Protection's Urban Forestry Program is to develop a regional and statewide cooperative effort to advance the development of sustainable urban and community forests. The Urban Forestry Program offers grants of over $1 million dollars a year to plant trees and over $2.5 million for related projects in urban communities throughout California. Seven Urban Forestry Field Specialists provide expert support to communities, non-profit groups and other municipal governments to create and maintain sustainable urban forests.

San Francisco Public Works: Public Works enhances the quality of life in San Francisco by providing outstanding public service. They design, build, operate, maintain, green, and improve the city's infrastructure, public rights-of-way, and facilities with skill, pride, and responsiveness, in partnership with the San Francisco community.

Department of the Environment: SF Environment is a collection of visionary environmental professionals who are dedicated to helping all San Francisco residents and businesses take an active role in protecting and enhancing their urban environment. They do so by developing innovative, practical and wide-ranging environmental programs, fostering ground-breaking legislation, and educating the public by providing comprehensive and easily accessible information on a wide range of sustainable practices. SF Environment makes it easy for everyone in San Francisco to take care of their environment, and ultimately, the planet.

Urban Ecos: Urban Ecos is an urban ecology consulting firm, working with cities, educational institutions, and businesses to make our world greener, more sustainable, and more environmentally sound.