Here in the US, these are sold as Shirley poppies, and they come in a gorgeous array of pale colors. The seed heads are great for use in dried arrangements...unless you're into opium.
Really? I wonder if they are misnamed just to get round any awkwardness with their real name? Real Shirley poppies are a cultivar of Field Poppies, so a different species.
Also known in the U.K. as "bread seed" poppies.... probably also to 'avoid' what they are.... and are used in some types of animal feed....where they mainly pass straight through.... and if you get your manure from a stable, you end up with an allotment full of these!!
The opium poppies they manufacture the drug from have white seeds, the ones with black seeds are genuinely grown for culinary purposes, so there is some justification.
I grew them in my first garden in France and a neighbour warned me solemnly to cut them down before I was denounced.
Yes, I got similar, not just with opium poppies, but with foxgloves too.