Latest figures for Fairtrade foods show that sales rose by 46% last year.
Fairtrade is launching a UK-wide campaign
The market for Fairtrade foods - products that guarantee producers in the developing world fair wages and working conditions - is now running at £100m.
More supermarkets are stocking the certified products, and from Monday the first Fairtrade flowers go on sale.
The announcement comes at the start of Fairtrade Fortnight, when events are staged all over the UK.
From just chocolate, coffee and tea 10 years ago, more than 250 products carry the Fairtrade mark today.
Latest figures show shoppers are now spending over £2m per week at the checkout on official Fairtrade foods.
From Monday, roses flown in from Kenya to Tesco become the first product that is not food to get Fairtrade status.
The growers receive a guaranteed minimum wage plus 8% of the export price - which they decide how to spend.
To stop unscrupulous firms from cashing in on a growing trend, only goods that undergo strict monitoring can qualify for the official mark.
Fairly-traded footballs and fabrics are likely to be next.