The government has spent more than $600,000 over the last three years on flowers to brighten up offices and on bouquets for staff and visitors, Labour says.
"When we have sectors of society struggling and the government warning of continued financial belt-tightening, there is no excuse for splashing out on unnecessary extravagances," said MP Kris Faafoi.
His figures show a total $603,349 spent on florists' services since 2012/13.
The Ministry of Social Development was the biggest spender, $136,040, followed by the Ministry of Foreign Affairs and Trade's $91,039 bill.
"The government surely needs to rethink its priorities," Mr Faafoi said.