Listen, owning spores is only illegal in Ca and Ga, right?
Owning mushrooms is illegal period, to the best of my knowledge. Certainly owning the amount a good crop would give you would be illegal, I would suppose. Unless you were planning on eating them as they get ready to be harvested, you're going to be doing something illegal anyhow.
That having been said, it's pretty well known that some companies openly ignore those laws. I won't tell you who if you ask.
**please note: author of post does not suggest taking *any* illegal actions, thank you, drive through, come again