[beesrus]

It is tall but I wouldn't worry about the Incredible F1 too much. I've grown it for several years and it harvests just as quick as other corns.
Last year I sowed 26 April, planted out 26 May, harvested 26 August.... enough leeway for a rather worse Summer. Some more I sowed 3 weeks later and it still harvested roughly the same time. About the same time frame as my Golden Bantam.

[andy dewar]

i set mine out today and have another batch just started should anything go wrong , i did the same last year and had 2 lovely lots so for the price of a pack of seed i think its worth the risk 

[Spr0ut]

As I feared the first batch of sweetcorn started well but the leaves became more and more blue-ish and transparent and are starting to rot off. They went through a cold snap and didn't recover.

I am awaiting a new packet of the same seed and will sow as soon as they arrive. Hope I haven't missed the boat and will certainly waith longer next year until things warm up.