Courgette prices jumped 74 per cent to an all-time high of $21.42 per kilo in June as a vegetable virus-related shortage looms, according to Stats NZ figures.
Imports of the vegetable from Queensland are still being barred.
"New Zealand has a limited supply of courgettes around this time of year as the local growing season comes to an end, so we would typically see courgette imports from Australia fill the gap," consumer prices manager Sarah Johnson said.
Overall vegetable prices also rose in June, up 7.6 per cent, influenced by seasonally higher prices for tomatoes, cucumbers, lettuce, and courgettes.
Both tomatoes and courgettes are more expensive than usual at this time of the year.
Typical falls for winter crops such as potatoes, onions, and carrots offset these price rises.