or perhaps we should'nt be 'doing' just that?
Or.........find a toad and cut out its third eye. Boil this with 2lbs of dried dragon-guts and half-a-teaspoon of baboon's b*****ks, with a dash of horseradish. Catch a mad March hare and march it round the cauldron (whilst boiling and bubbling and yer mates chant "Bubble, bubble, toil and trouble" etc (see Macbeth, W.Shakespeare for full recipe details). Construct a wooden platform and during full moon (or as close as possible) drip the potion whilst suspended by the skin'o'yer'teeth..........
Or you could get conventional spade, fork, trowel or rake and with a bit of conventional dig the weeds out without poisoning and burning every living thing in the vicinity.
As an ardent organic gardner with one or two worries about the planet and our ignorance, let's start small but let's start!