That's interesting that it might have an impact on plant life. What about animal? Whenever I hear about ULF/ELF, my mind immediately drifts to the Bryan Cranston "X-Files" episode "Drive" [1]:
> Mulder realizes that Crump is suffering from a painful sensation of pressure building in his head and that the only way to alleviate this pressure is to drive west. ... [Scully] then discovers a U.S. Navy antenna array emitting ELF waves stretches beneath their property. Scully deduces that an abnormal surge in these waves somehow caused a rising pressure in the inner ear of the nearby inhabitants. Westward motion and an increase in speed seem to be the only thing to help ease the pain of the increasing pressure
[1] https://en.wikipedia.org/wiki/Drive_(The_X-Files)