I never have. I purchased this artichoke a while back because I liked the looks of the plant not because I like artichokes. So I let it grow and then harvested the fruit and gave it away to my neighbors who like them.
This year I was a little late in harvesting the artichokes and one of them was a bit past picking time. SO I decided to let it grow and bloom because I hadn't seem one bloom.
What a beautiful flower and I understand that the bees really like them too, although I have yet to see the bees on it. I think next year instead of harvesting any of the artichokes I will let them all bloom.