That’s definitely an argument to be made and the one I would make. But the commerce clause has been historically used in a very broad manner. Courts have basically said that any effect on persons, instrumentality, or products all fall under the clause. So basically if you get fertilizer from Michigan to plant in then you are now technically participating in interstate commerce even if the final product will stay local. While more modern courts have started to narrow this application, the history gives way to broad enactment by congress.

I’m also no expert, but I am a second year law student who interns at a licensing firm in the city so I have a little exposure here.