"Every farmer in the region that's been affected has been impacted," Jo Sheppard from Queensland Farmers Federation said.
With supply routes cut, some dairy farmers have been forced to dump milk, while growers impacted by transport delays have also struggled to get their produce to market she said.
Some dairy farmers have had to dump their milk after roads were cut. (Dean Lewins/AAP PHOTOS)
Prawn farmers have been able to get most of their harvest done before the cyclone hit, Ms Sheppard told AAP.
Agriculture and Emergency Management Minister Murray Watt says the clean up is well underway but the damage is significant.
"This is going to be a long recovery effort, this has been a major national event" Senator Watt said while visiting Cairns on Thursday.
Mango farmers who were already struggling to produce a good crop in Queensland's north are now facing extensive damage.
Damage to agriculture has been severe, with every farmer facing significant losses. (Danny Casey/AAP PHOTOS)
Joe Moro says his mango farm near Mareeba copped a deluge of 1.2 metres of rain over five days, ruining about half his crop and costing him half a million dollars.
His 14 workers resumed harvesting on Thursday after a two-week delay.
"Half my crop has either been damaged by the flooding, totally black, can't be harvested at all, or it's ripening and dropping onto the ground," he said from his farm west of Cairns.
Mr Moro is also the president of Queensland's fruit and vegetable growers association and said the damage to agriculture across the region has been severe.
"Every crop has been affected in some way," he said.
"Papaya trees are falling down, heavily blemished fruit, banana trees are falling down and sometimes some of that crop is also in water."
"Even the avocado crop which hasn't been harvested yet, there would be some impact on those growers as well."
Disaster assistance loans are available to farmers impacted by the cyclone. (Joel Carrett/AAP PHOTOS)
Nursery owner Elaine Duncan is also counting the cost of the damage and will be continuing to clean up over the next week.
"The worst of it was the torrential rainfall and coming to work and seeing a nursery full of rotting plants."
It was probably around $300,000 to $500,000 worth of damage and loss of crop and ongoing trade," she said.
The nursery is a major grower of seedlings for far north Queensland, supplying home gardeners and hydroponic farmers with everything from tomatoes to basil and capsicums.
While the damage is still being assessed Queensland Farmers said it's likely to be several weeks before the full extent is known.
Disaster assistance loans of up to a quarter of a million dollars are available to producers impacted by the cyclone.
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