Is this a poppy?

In the autumn of 2010 I planted different types poppy seed that I'd
forgotten to plant earlier in the year.

They didn't flower last year, I imagine because I'd sewn them too late.
All of my seedlings and plants were kept in the greenhouse to grow and I
hadn't labelled any of them.

We planted them out in the ground in March and they've done really well.
But I'm a little confused because I was sure they were all poppies, but
one particular plant doesn't look like the rest. It has strange buds on
that I don't recognise.

Can someone confirm if this is a poppy or something else?

|Filename: giantpoppy.jpg |
|Filename: dontknow.jpg |