You wouldn’t think residents of Phoenix would need to be told to plant desert plants to save water, but then if you thought that you clearly haven’t been to Phoenix. From ABC’s KNXV-TV
A desert landscape can save hundreds of dollars a year
“After a few once-a-month waterings, a cactus will take care of itself,” says Rilé Leblanc, otherwise known as the Cactus Doctor.
I find such advice to be quite astute.