The catastrophic weather in New South Wales is likely to come back to bite at the supermarket checkout, with peak farming bodies warning the floods will put further strain on supply chains.
Jackson said turf growers would be the hardest hit by the extreme weather event, while leafy vegetable growers in the Hawkesbury-Nepean region would also be affected.
Jackson said unless contracts with supermarkets were increased, supply shortfalls were inevitable.
The Hawkesbury-Nepean region contributes $61m to annual vegetable production, the latest Australian Bureau of Statistics data found, while 480 agricultural businesses remain registered in the greater Sydney region.
