If you're really desperate, you could glyphosate it, but it's really last resort as it has impacts on your soil and you. And it's not great for the environment.
Oh, nature can cope. There's already glyphosate resistant weeds.
Which amuses me to no end - Monsanto makes a huge effort to create resistant plants, and then the weeds just go and naturally evolve resistance in what is likely a much shorter time than it took to genetically engineer it. 
... that said, I am very aware that I will not evolve glyphosate resistance all on my own, so would never put it anywhere near something I intend to eat.
I planted some obscure Andean crop, cannot remember the English name, I think it might be a nasturtium tuberosum or something?
Hope the -13°C won't kill it.
(I bought it for consumption as vegetable and it wasn't getting any better in the fridge, so I figured I'd try and plant it)