[Thephoenix572]

It's it too early to start the seeds off, they are called Earlibird

[mumofstig]

It is indeed much too early to start sweetcorn 

[Robert_S]

I started mine in May last year and that was still too early..they got checked by a cold spell, some were killed off and only a few produced anything remotely edible.

Trying a different variety this year and will be hoping for a better summer.

[Gandan57]

Early April in paper pots under glass for mine.

[DD.]

What's it say on the packet? Bet it doesn't say February!  

[Yorkie]

This far up the country, I don't start my sweetcorn off indoors until very late April / early May.  Otherwise they get far too leggy too quickly.

If you have a heated greenhouse then timings can be sooner.

[DD.]

Mid April for me here in the midlands - in a greenhouse.

[SnooziSuzi]

I generally start mine off in my cold greenhouse in late April and when I put them out in mid May I cloche them under 2l drinks bottles for a week until it warms up / risk of frost has passed.