Panicked sons and dads are probably leaving it to the last minute to buy gifts for their mums and wives, figures from Countdown show.
The supermarket chain looked at last year's sales figures and found a massive spike in chocolates, flowers and cards on the Saturday before Mother's Day.
Countdown sold eight times more flowers than normal on last year's Mother's Day than the average Sunday, and four times as much chocolate.
While more than half of flowers sold on Mother's Day went in the morning, 131 didn't make it until after 8pm.
More than 50,000 Mother's Day cards were sold last year, 13 percent on the day itself. More than 150 people didn't get around to buying a Mother's Day card until the following Monday.
"Don't panic if you've forgotten it's Mother's Day over the weekend," said Countdown spokesman Scott Davidson.
"Countdowns around the country are also conveniently open until 10pm the night before Mother's Day, and in some cases they are open 24 hours."
Mothers are clearly more important to men than their partners - they spend around $3.50 more on flowers for their mums than on their Valentines.
In case you missed it, Mother's Day is this Sunday, May 13.