Trees are an important part of San Francisco. Some have historical presence while others have characteristics that make them extra special including their cultural significance, age, or ecological value.
The City and County of San Francisco acknowledges the signifcancy of these trees and has started a public nomination program for trees to be protected and preserved by the San Francisco Landmark Tree Program.
Trees can be on public or private land, and are detected by a special Google Map. Criteria for the designation of landmark trees include consideration of age, size, shape, species, location, historical association, visual qualities and other contribution to the City's character.
Height is greater than 20 feet, canopy width greater than 15 feet and trunk diameter at breast height greater than 12 inches. All nominations are evaluated by the Urban Forestry Council. Anyone whom removes a landmark tree takes the risk to serve jail time.