Stalker was pretty confident that the spent mushroom compost SMC tag was a standard around the globe.
However a Pennsylvania Department of Agriculture website shattered that complacency with a discussion of SMS otherwise known as Spent Mushroom Substrate.
Stalker knows that in the grand scheme of things these tiny discrepancies from one side of the Atlantic to the other are not earth shatteringly important.
But when you mention SMS over here, it generally refers to the electronic medium of texting as opposed to the growing medium beloved of gardeners.
No doubt SMC stands for something completely different over there. Confusion is sure to come into it somewhere along the line for some mushrooming concern. It's like -"you say potato, I say spud." No confusion there.