This included apples and kūmara following Cyclone Gabrielle.
Across the supply chain, Olsen said prices were going up. Suppliers were facing more costs and it was making its way down the chain to consumers.
Fuel prices and wage bills were part of the increase but materials had also increased, he said.
Packaging was nearly 10 per cent more expensive than it had been last year.
“It’s not only the goods that you are trying to buy at the supermarket, it’s what they are wrapped in or packaged in or boxed around.”
Olsen said the supplier cost increases were wide-ranging, but product costs for FoodStuffs were up more than 20 per cent from last year.
“Frozen foods and grocery goods also saw an acceleration in supplier costs, with dairy products, frozen vegetables, breads, petfood, and eggs all seeing larger increases.”
The Infometrics-Foodstuffs New Zealand Grocery Supplier Cost Index (GSCI) measures the change in the cost of grocery goods charged by suppliers to the Foodstuffs North Island and South Island co-operatives.
It uses Foodstuffs NZ data across over 60,000 products the company buys. Foodstuffs NZ has the New World, Pak’n Save and Four Square brands.