Looks a bit like the nonsense of growing upside down tomatoes. But I will withhold judgement until I see the pictures of the produce, and incremental growing stages. I suggest it was a slow day at the Star. Now this story will be spread all over the internet, with nobody actually seeing the produce.
I grew corn in containers just as a very pleasant ornamental. The stalks are lovely, grow reliably and sound lovely rustling in the breeze. I did get corn (not much as I crowded the stalks), but because the cobs are wind pollinated, you need to create a fairly large corner of corn (ie several massed pots) to generate good conditions. You can try hand pollinating. My pots were half compost and mushroom manure as I rightly predicted corn is a heavy feeder. But I think you would have trouble potting up enough to get any kind of crop. At one or two ears a stalk, you need a lot of corn plants to generate a corn feast.
