PELHAM, ONT - Niagara regional police say they have busted a marijuana grow-op that was disguised as a cucumber operation.

Police say officers raided the operation Wednesday, after a five-month investigation.

It's alleged they found more than 3,300 marijuana plants and three kilograms of dried pot in two greenhouses in Pelham, Ont., about 20 kilometres southwest of St. Catharines.

Ming Sheng Wu, 37, of no fixed address, is charged with producing and possessing marijuana.