Ring the entry bell to Patrick Anderson and Les Olsen’s Fallbrook, California, garden, and the tall, redheaded Anderson is likely to greet you wearing teal-colored trousers and a melon orange shirt. His colorful persona, both inside and out, is only a hint of what’s to come. Anderson’s tour starts at the streetside garden he designed a few years ago. The gated driveway is flanked with angular planter beds stuccoed dusky sage green. The structure and geometry play off mass plantings with a limited plant palette. Still, each bed is filled with a dramatic combination of succulents and cacti.