I am not cultivating fields of these things, but did you ever wonder why the DEA doesn’t come down hard on red-blooded American gardeners about their poppies? Okay, okay; the fastidious amongst you will say this is Papaver orientale that I am growing in my front yard, not P. somniferum (the opiate). I don’t know. They look the same.
But if I had to rely on this as a cash crop, I would starve. They don’t like this hard soil. So when they do grow and bloom, I get all dreamy.