Stone fruit growers in the warm inland regions of South Australia and Victoria say early season fruit will be blemished because of strong winds.
The Swan Hill, Sunraysia and Riverland regions have experienced wind gusts of up to 80 kilometres recently, as well as frosts and days with hot, dry northerly winds.
Renmark North stonefruit grower Dino Ceracchi says he can't remember spring weather so variable.
"We're going from cold, to warm, with lots of hot windy weather. It's all over the place and I don't think it's doing the fruit much good."
Michael Tripodi, president of the Swan Hill Summer Fruit Development Association, says similar conditions in that region are a concern for growers.
"The wind causes rubbing on the fruits and I think there'll be a lot of marred fruit around this season."
Mr Tripodi says stone fruit growers in Victoria will face the added difficultly this year of not having access to the pesticide fenthion, which is used to control fruit fly.
"It's another tool we can't use to control fruit fly," he said.
"It's not good, especially because we're trying to keep our Pest Free Area in order."
Mr Tripodi and Mr Ceracchi both say, however, that the damage is mostly to the appearance of the fruit, and the eating quality is still high.