or magnetic fields like NASA will be looking for here

But rather the electrostatic potential difference between Earth and Space.
I remember reading a magazine article where a person used the electrostatic potential difference in the atmosphere to control the flight of a model airplane. The sensors were installed in the wing tips and the potential difference between the two sensors controlled the level flight of the model plane. I do not remember what magazine it was or what year or the name of the person who did the experiment. I do read a lot of scientific and electronic magazines.

As I understand it, the water molecules are 'dipoles' electronicly, that is why the microwave ovens work.

Anyway; my hypothesis is that the water molecules in the plants may orient the growth of the plant so that the plants align them selves between the strongest electrostatic potentials.
I wonder if anyone has thought of or experimented with this kind of an idea.
Johannes