The stone-fruit industry is sour about immature fruit getting into the local market.
That's one of the issues that the industry body, Summerfruit New Zealand is tackling in a programme to improve fruit quality.
Chief executive Marie Dawkins says weeding out immature fruit is a priority that the growers have identified.
Summerfruit New Zealand is funding the fruit quality project from the levy it collects from the growers of cherries, apricots, plums and other stone fruit.
It also uses levy money for research and export market development.
Growers are voting this month on renewing the commodity levy for a further six years.