Cops weren't lying when they said they discovered nearly 400 pot plants at the Nevada home of former Hollywood madam Heidi Fleiss ... just check out the INSANE haul they confiscated last week.
TMZ broke the story, Fleiss was charged with pot possession after police claim they found 392 marijuana plants outside her house in Pahrump on August 7.
Fleiss admitted the plants were hers, but told police she was growing them for a cooperative in Vegas.
The problem ... Fleiss didn't have a license to grow at the time, so she has been charged with possession of marijuana with intent to sell, possession of drug paraphernalia and maintaining a home where drugs are sold/used.
The plants have since been collected as evidence. Fleiss has not been arrested ... yet.