The required acreage to yield opium in significant quantities is way beyond a closet (or even a basement). Not to mention that heroin is ~1% of total opium weight.
If we're talking about Joe's personal use, a single poppy plant produces multiple doses, according to this[1] reference and some anecdotal drug forum dose suggestions, on the order of tens of mg.
Could you tell me what number "multiple" is and what a "dose" looks like?
Are we talking about raw plant material that is opium, or refined heroin/morphine/codeine? The conflation of the word drugs and plant material seems like the most absurd gorilla in the room.
