POLICE discovered a major “grow house” with 400 mature marijuana plants during a raid in Bibra Lake late last month.

Organised Crime Squad detectives broke down the door of the Della Drive home last Monday, discovering the power had been “tampered with” – usually code for tapping into the neighbour’s supply to run a hydro set-up.

Inside, detectives found 10 rooms converted to grow cannabis plants, with 400 mature and healthy specimens being seized. Police also took 100 light shades and any number of globes.

They’re now after information about the green-thumbs; anyone who knows anything can call Crime Stoppers on 1800 333 000.