Traditional Californian style perennial gardens can be contemporary, exotic, arid, mediterranean, cottage, eclectic, and even French. The important thing is that they are maintainable, that they are drought tolerant and that they provide you with something interesting all year round, since our gardens don't get the winter off.  

Fragrant plants and flowers that draw hummingbirds, monarch and swallowtail butterflies, because, why not?