For twenty years Mary Irish, along with her husband Gary, tended a garden in Scottsdale, Arizona. Over the years they transformed it into a lively and lovely spot that reflected both its place in the world--hot, dry, and often hostile to gardeners who don't understand its ways--and the particular passions of its two creators. Of course, not everything went as planned, and the garden talked back as much as it obeyed. But for these two gardeners, the...