Mystery poppy-like plant

Meconopsis cambrica, the Welsh Poppy.
It is a lovely plant and we have plenty in the garden. But, it does seed around in profusion. Try to keep some control on them or you could have a garden full.

Lucky you Bernard, yes the Welsh Poppy.

Very lucky! You do come up with some beautiful mysteries, Bernard!

lovely yellow flowers, mine are orange.

Thanks for your replies, folks. The base of that plant is surrounded with tiny seedlings as you can see in the photo. I must remember to dead-head this year!

I'll have a really beautiful mystery for you later in the year Spritz. I think it's a shrub rather than a tree, but it is about 9ft high and when it flowers (soon) it is covered with white flowers that hang down like tassels. Nobody I have spoken so far can identify it without seeing the flowers. Last year it took me by surprise as it only flowers for a few days and I didn't manage to get a photo in time. I'm watching it like a hawk this year!

Mysterious - sounds great!