
The agency won the project after a pitch against Bartle Bogle Hegarty, the incumbent on the business, and will now be responsible for rolling out a campaign in Western Europe and North America next year.
BBH has handled the Flora and Becel accounts since 2004, and has produced a series of high-profile ads for the brands, including a "love your heart" campaign that promoted Flora's health benefits.
In February, Unilever also appointed Krow to work on an advertising project to support Flora's "cooking with schools" initiative.
DDB was already a Unilever roster agency before the appointment, as it handles the UK advertising for the company's Marmite brand.