Two men have been charged after a multi-million dollar cannabis plantation was uncovered at a farm in the far north of NSW.

Police found more than 1000 plants in a large industrial set-up at a rural property in Korora near Coffs Harbour.

More than $3 million worth of weed was seized by police.

Two men, aged 26 and 31, were charged with supply prohibited drug (commercial quantity) and cultivate prohibited plant (large commercial quantity).

Both men were refused bail to appear at Coffs Harbour Local Court today.

Image: NSW Police