I don't know where it came from (apart from Wales, ha ha) but I'm sure there are no others like it in the garden. Will definitely keep the seeds to spread elsewhere 😊
No longer newish but can't think of a new name so will remain forever newish.
I have them but as they seed so prolifically in my garden I am forever pulling them up and just leave a few plants and cut off dead flowers; I still end up with a lot of them!
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I love them, but some people don't.
I live in west central Scotland - not where that photo is...
https://www.google.com/search?q=Meconopsis+cambrica,+the+Welsh+poppy,&client=firefox-b-d&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjC0cDewfDhAhXHDGMBHb6FAWkQ_AUIDigB&biw=1920&bih=944