Spar Scotland has already completed three free trials in partnership with the Healthy Living Programme and the latest effort involves independent stores in Blantyre, Inchture, Scone and Kinmylies.
Each store has a day when free apples, pears and bananas are given to schoolchildren between 2pm and 4pm.
The campaign is intended to encourage children to eat more fruit.
Paula Middleton, Spar Scotland marketing manager, said: “We are delighted to roll this campaign out to our independent network for the first time.
“The trial has proved very popular, and we are grateful to get such great support from our Spar retailers taking part.
“We know how important it is to encourage healthier snacking choices and consumers want to eat more produce.
“We have great-quality fresh fruit and vegetables available in our stores and promoting this campaign remains a great way to persuade consumers to change their habits.
“It’s another step in connecting with our local communities.”
The Healthy Living Programme has been working with convenience retailers since 2004, highlighting the availability of fresh fruit, vegetables and healthier products from convenience stores across Scotland.
The programme is fully funded by the Scottish government and aims to connect local schools with convenience retailers. So far, they have reached more than 18,000 school children across the country.