Love in a mist (Nigella damascena) is a lovely plant. It's an annual that's extremely easy to grow and is self-seeding. You can sow the seeds in Spring through to early summer. They flower from early June through to the frosts - depending on how late you sow the seed. It prefers a dryish sunny site.
A packet of seed should be quite cheap as each flower head produces thousands of tiny seeds. Usually, once you have them in your garden they are there for as long as you want them. Collect the seeds when the pods have dried and sprinkle in early Spring. Any that you haven't picked will seed in situ.
The leaf formation is very pretty and the seed pods are attractive. A very rewarding plant.
This is what it looks like when the flower buds are just forming. You can see how the leaves give rise to the word 'mist' in the name.
We have them all over our garden and never need to spread the seed around. The wind and wild life do it for us.