He worked on the George H. Howard estate in the San Mateo foothills in California, then on the
Leland Stanford estate in
Palo Alto, and planted trees on
Coyote Point on the shore of
San Francisco Bay. McLaren also designed
Graceada Park in
Modesto, California. He was friends with
John Muir and dedicated his life to vigorous advocacy and development of
Golden Gate Park, one of the largest public parks in the world, using considerable political skill in addition to his remarkable gardening skill. Appointed park superintendent in 1890, replacing the park's designer
William Hammond Hall, McLaren requested thirty thousand dollars a year for park building. One of his stipulations before taking the job was, "There will be no 'Keep off the Grass' signs." His horticultural philosophy was to achieve a natural look, typified in his dislike for statues, calling them "stookies" and
planting trees and shrubs to hide them. He built two windmills to pump water to the park and had the sweepings from San Francisco streets delivered as fertilizer. When ocean waves and wind piled sand on the west end of the park, he began a forty-year effort to pile branches, clippings and laths on the shore to capture sand and build the great berm that now holds the
Great Highway. == Hanchett Residence Park and Hester Park, San Jose, California ==