FOUR members of one family have been charged with operating what police will allege to be a large-scale marijuana growing property, hidden behind thick scrub at Coominya.
Officers from Ipswich's tactical crime squad executed a search warrant at a rural property on Wattle St, in the Brisbane Valley township, early yesterday morning.
They allegedly discovered about 900 plants, with about 300 of those in the process of being dried - or already dried - to prepare them for sale.
Although unable to quantify what the haul may have been worth in monetary value, police work on a general rule that marijuana fetches roughly $3000 per pound.
It took police several hours to gather up all of the dried plants yesterday, with the product filling several 200-litre plastic barrels.
Two police vehicles and a trailer were needed to transport the allegedly dried and ready for sale plants away from the property.
A woman aged 69, her two sons aged 37 and 42, and her grandson, aged 17, were taken back to Ipswich for questioning and later charged.
Ipswich Detective Inspector Lew Strohfeldt said members of the SES would assist in the search for more plants through the afternoon.
"We'll be alleging that cannabis was being grown and dried for sale," Insp Strohfeldt said.
"It was all being grown in the bush. Because of the amount there, we'll be alleging it is of commercial quantity.
"We will be alleging there's far too much to even consider personal use.
"We are still going through a lot of things on the property, but there is machinery that we believe has been used in relation to production of a dangerous drug, and the investigations will go on for some time.
"We'll be here for a couple of days. What we intend to do is pull all the plants out and they'll be burned on site."
Police confirmed yesterday afternoon that the four family members had been charged with one count each of drug trafficking.
They will appear in Ipswich Magistrates Court today.