The parts of San Francisco that I've lived in, the houses don't have front yards, or barely.

Some people put container plants along the sidewalk in front of their house if it's wide.

A house with a row of container plants next to itself, plants which seem happy and wild like they think they are in the exact place they were evolved to be is painted white in a straightforward manner except for the big green circle painted mostly above the plants but the bottom of the circle painted behind them.