Grass

You work as a gardener in a very beautiful garden, but the land here is very soaked with an unknown substance that allows the grass to grow very quickly, and it's not good because then the whole garden is overgrown with grass and a huge turn into a real jungle! Using scissors, you'll cut it and do you need it very quickly that would be anywhere grass is not too high, if at least one blade of grass to grow forbidden level you get fired!