There is a great read on the history of Japanese-Americans and their influence(s) on the gardening culture in and around Los Angeles.
[photo from the story]
Included is the history of how it started, the interruption of WWII, and the demise of Japanese-Americans in the landscaping field today. This link will take you to the print page.
For all its subtlety, the classic Japanese garden can be downright
cocky. It aims to do no less than “capture the whole universe of nature
in a small scale,” says Uesugi. So you don’t need a spare park or
waterfall in your backyard to capture the magic.
Info is also included on the exhibition titled: “Landscaping America: Beyond the Japanese Garden” at the Japanese American National Museum, 369 E. First St., Los Angeles