I was reading a care sheet for Staghorn ferns and it made a point that "artificial light" was a no no. And that it was a "Staghorn fern thing" that didn't apply to other plants.
I have a hard time wrapping my head around this. A photon is a photon, so why wouldn't a grow light work for Staghorn ferns?
Any ideas on why the author of this care sheet would make this point against artificial lights?