It was the largest illegal marijuana grow operation ever shut down by Niagara Regional Police.
Police have been investigating the grow-op at Third Street Louth and Main Street in St. Catharines since May.
Police searched the place on Tuesday and have arrested 11 people.
They face a list of drug related charges.
More than 17,000 plants were seized by police.
The value is about $34-million.
2 from Niagara named to the Order of Canada
Mary Ann Edwards of St. Catharines and Donald Triggs of Niagara-on-the-Lake were among the 80 new appointments announced today
$3.5M of Crystal Meth seized from drug lab
NRP Officers discovered a clandestine drug lab in a residential neighbourhood in Niagara Falls
NRP Searching for B&E Suspects
NRP are appealing for the public's help in identifying 2 suspects in relation to 3 break & enters on residences in Welland and Pelham
Welland CAO Optimistic for 2026
Jessica Ruddell is pleased with 2025 progress, but wants to build on that
Niagara Clinics Help Coughs, Colds
Niagara North Family Health Team says these are to help ease hospital ERs, meant for non emergencies
Clifton Hill Construction in January
The city says this is for Smart Pole installation for wireless services, lasting to the spring
Gas Prices to Hold Steady: Analyst
Prices have been seen as low as below a dollar in Niagara, and not expected to shoot up again until the spring or summer
NRP Using Warrant in Niagara Falls Area
They're asking everyone to avoid the area, but no risk to public safety