In all fairness, "King Corn" is about GMO, and to a lesser extent,
"dent" corn. The question here was in reference to sweet corn, which I
think I'm giving up on because of water consumption, and my lack of
skill in picking at the peak of ripeness.
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I have a well, fortunately, but I too seem to lack the ability to pick when
ripe. One day the kernels are too smal, the next day they are over-ripe.