The PSNI have recovered an estimated £10,000-worth of cannabis plants in a raid on the Garvaghy Road, Banbridge.
The planned search on Thursday saw officers come across the cannabis factory in an outhouse.
A 55-year-old man was arrested for possession of Class B drugs with intent to supply, cultivating cannabis, and dishonestly using electricity.
He has been released on bail pending further enquiries.
Chief Inspector Davy Beck said: “This seizure demonstrates our ongoing commitment to tackling the sale and use of illegal drugs.
“We work best when we work in partnership with the communities we serve and this is evidence of that. I would encourage anyone who has concerns or information about drugs to contact us on 101.”
It came one day after about £300,000-worth of herbal cannabis was uncovered on Wednesday at a business address in Newtownabbey (although police would not say where in Newtownabbey).
In that case, a 30-year-old man was been arrested for questioning.
Following that seizure, Detective Inspector Sean Taylor had said: “Officers have also searched properties in Randalstown and Ballymena and our enquiries are continuing. This is the latest in a series of unrelated drugs seizures this week which brings to total value recovered since Monday to more than £1m.
“We are aware of the threat posed by illegal drugs and are determined to use every opportunity to take these substances off the streets and bring anyone involved in their sale, supply or distribution before the courts.”
There is no suggestion at time of writing that the Newtownabbey seizure and Banbridge one are linked.