Can't be blowed

It always amuses me to see these signs here on the fences where vast fields of opium poppies are growing. It's a big crop: Tassie supplies about 40% of the world's morphine.

It's not easy to extract the opium from the seed-heads, which is what they mainly rely on to protect the crop, I'm guessing: that the people who'd be interested in using it are just too laid back, man, to be bothered. It's kind of a neat little cause-and-effect thing going on.