Drugs worth £30,000 were discovered during a raid at a terraced home in Preston.
Police officers say they acted on “community intelligence” regarding a suspected cannabis farm at a property on Plungington Road, close to the junction with Blackpool Road.
They raided the house on the evening of March 4 and found cannabis plant and a sophisticated hydroponic set up, with the plants in advanced stages of growth.
Around 30 fully grown cannabis plants seized, some as tall as eight foot in height
The haul is estimated to have a street value of £30,000.
It is the fifth such discovery in the Lea area in eight weeks.
Today Sgt Paul McLernon, of Lea Police, said: “It is a great result Cannabis seems to be the drug of choice at the moment in Preston, perhaps because people think it’s easy to grow in a domestic setting.
“But these finds show that we can, and do, detect cannabis farms in the city. We atre determined to act on the community’s information and deal with offenders robustly.
“Concerns about cannabis were highlighted as a priority at Plungington’s PACT meeting.”
A man and a woman are helping police with their enquiries.
Police are continuing to investigate finds at a semi detached home on Victoria Park Drive, Lea, Preston, and Garden Walk in Ashton.
Indoor cannabis farms are appearing in quiet residential streets throughout the country in unprecedented numbers.
Some produce up to £250,000 worth of the class B drug every year.
Four large farms were exposed in the same week in Ribbleton in November.
Anyone with information about drugs in their neighbourhood is asked to call police on 101 or Crimestoppers on 0800 555111.