Say it with flowers … from Amazon.

The online retail giant this week quietly launched a Big Apple flower-delivery service, The Post has learned.

The move comes just before Mother’s Day.

Amazon’s Prime Now service is making an assortment of bouquets available for delivery in an hour or less throughout Manhattan and parts of Brooklyn, a spokeswoman confirmed.

New York is Amazon’s first market to roll out flower delivery, spokeswoman Kelly Cheeseman said. The service is available exclusively through the company’s Prime Now mobile app that launched in December.

To date, popular Prime Now orders have included heavy, bulky items like big-screen TVs, she said.