Davis Dalbok is dressed in a pale lime-green suit, a lemongrass martini in one hand and gesturing with the other over a corner of this San Rafael, California, garden. “This area is all about stories in green with riots of color,” says Dalbok. He’s guiding his guests for their first look at the garden he recently completed for a dear friend. Dalbok’s description could apply to himself: He’s a passionate plantsman whose worldview embraces the colors of every continent. But here, the story he’s set out to tell is one that is pure California.