During a tour at the Arizona-Sonora Desert Museum, a New York City woman mentioned that she was raising a type of cactus in a pot on her apartment balcony.

Another tourist asked her how she kept from watering it too much, because the cactus would die if over watered.

"I subscribe to the Tucson newspaper," replied the New Yorker. "Every time I read that it rained in the desert, I give my plant some water."