I'm not gonna go into detail about how I know this...

[Mister Obvious]

Ok I agree with that makes sense because when you poison plants then stop poisoning them they grow back with a vengeance.

Yeah that's a good point.

[ELFUNGNINO]

Yeah that's a good point.

Its like when you chop the top off a huge tree it grows back harder as a shrub because it creates more cell division.
Its like when you tip plants they get more buds cos the cells divide more and create more sites for buds.
There is a natural precedent for this but I never thought of pissing on it then stopping. Amazing idea.

[user328]

... they used to boil urine for the potassium nitrate to make gunpowder.

And here I had romantic visions of thousands of peasants scraping bat guano off of cave walls.

[Master Oblivious]

But if one urinates repeatedly in certain parts of outdoor areas, eventually regular plants start growing there to MAMMOTH sizes.

I've actually seen the effects of bush growth from urinating into cupped hands, then going to the plants and letting it drip down into it. 
I mean it's just the same stuff going on but the transfer energy must be what's happening to make them even more vibrant. Cupped hands; 
and other ways of carrying the urine to the plants using another "helper."

[Mister Obvious]

[Master Oblivious]

It really is the best method.

[Mister Obvious]

You gotta STOP pissing in the spot for a season and THEN it takes off.

If you just continually piss on one area, it will kill it...

But then if you cease the pissing on that spot, the next season MAMMOTH versions of regular plants will start growing there.

This is key.