Southwest: Steve Martino 

Phoenix-based landscape architect Steve Martino has unlocked the secret to successful gardening in dry desert environs: “The backbone of my career has been celebrating the desert rather than making apologies for it,” he says. His drought-tolerant designs relate to the southwestern climate and feature native plants—like the whale’s tongue agave, compass barrel cactus, and ocotillo in front of a Scottsdale midcentury house.  Photo 1 of 12 in Landscape Design for All Climates