It's generally dried before smoked, or for food products the oil is extracted. I would think the oils would eventually evaporate from the dried or the extract but I don't actually know. It's legal here in WA and the packaging I've seen doesn't have any dates on it so take that with a grain of salt with the supply problems we've had (the state limited the amount produced, so for the first year at least there were reported shortage; they heavily misjudged demand :)).
I'd think it's very similar to tobacco. Vape for tobacco doesn't really expire, it's just the niccotine. And cigs keep for a long time. They get brittle over time, as do cigars, so I would think it's very similar. Again I'm not an expert, I just live in a state where it's common.
So city-based vertical farming of marijuana is likely less advantageous as freshness isn't a key driver? If it's more expensive than salad greens, maybe the transportation cost isn't as big a factor either? Crush salad greens and they're going to sell poorly.
I'd guess that security and surrounds might be an issue for growing an in-demand product too? Doubt lettuce farms suffer too many break-ins!
It's my understanding that empty warehouse space is hard to come by in colorado because it provides year round controlled growing conditions so there is a price floor on the spaces.
I'd think it's very similar to tobacco. Vape for tobacco doesn't really expire, it's just the niccotine. And cigs keep for a long time. They get brittle over time, as do cigars, so I would think it's very similar. Again I'm not an expert, I just live in a state where it's common.