Food prices in the UK grew at the fastest pace in nearly six years, according to the British Retail Consortium (BRC).
The industry body said last year's extreme weather affected crops across the country, pushing up prices for products such as potatoes, onions and cabbages.
Farmers were forced to delay planting last year after the 'Beast from the East', which was followed by flooding in some areas throughout April. Then the summer saw a long heatwave.
The BRC said food price inflation was 2.5% in March, which is the fastest growth since November 2013.
Chief executive Helen Dickinson warned that the rate of growth could accelerate further if the UK leaves the European Union without a deal.
She said: "The bigger threat to food inflation remains the risks of a chaotic no-deal Brexit, which would lead to higher prices and less choice on the shelves.
"In order to avoid this scenario, parliamentarians from all parties must find a compromise that can command a majority in the House of Commons."
On Tuesday, Prime Minister Theresa May announced plans to meet with Labour leader Jeremy Corbyn to work together on a compromised approach to Brexit.