My favorites are called "love in a mist" or Nigella. They come in
several colors, and are annual wildflowers native to England. Those in
one of my box raised beds are now in full bloom. I grew them from
seed.
I will shortly put a picture or three on my personal site.
  Until then, enjoy this:
https://www.epicgardening.com/love-in-a-mist-nigella/

Lewis