The BBC reports
Seventy cannabis farms have been shut down and more than 2,500 plants and 100 kilos of the drug with a street value of almost £2m have been seized.
The details emerged as 28 men were jailed for their involvement in the multi-million-pound drugs ring.
It comes after a series of raids in Nelson, Accrington, Pendle and Burnley.
Lancashire Police said officers were able to identify the drugs farms as the majority of properties had the same brand of door, blinds and windows.
Det Sgt Stu Peall said: “These defendants were part of a sophisticated organised crime group (OCG) which invested significant amounts of time and money into evading the police.
“It was only through good, committed police work that we managed to unravel this complex network of criminality.”