Ha and his wife replaced their grass with wood chips in 2008. They said they'd just had a baby and began to think about her future.
At a time when Southern California cities fine people for overwatering thirsty lawns, the Has say they've saved hundreds of thousands of gallons of water and slashes their bill.
The city cited them for violating a law requiring live landscaping to cover 40 percent of the yard.
The couple planted drought-tolerant plants last year. The city says it isn't enough.