New phenomenon with sweetcorn

Anyone else had the following strange happening? A couple of my sweetcorn in the polytunnel have not produced cobs but their are fat corn grains in the flower tassels. The rest are great but I've never seen grains in the tassels before

I've had quite a few do this over the last few years
http://chat.allotment-garden.org/index.php?topic=81017.msg906695#msg906695

Anyone else had the following strange happening? A couple of my sweetcorn in the polytunnel have not produced cobs but their are fat corn grains in the flower tassels. The rest are great but I've never seen grains in the tassels before

Ah - so as in the tassels and not the silks where the cobs should be. I now need to go out and have a look at mine in the greenhouse as they did superbly in there last year, but have noticed the higher cobs stripped or opened by something but the lower ones were ok and all silks have not gone brown as yet.

I've had this with Lark this season. Only on cobs that have tried to grow on the sideshots though.

Totty