Do Ammi Majus Self Seed. Sow where you want them to grow. It is not recommended to start indoors as plants are challenging to transplant.
I sowed more seed in late summer last year and the seedlings were supplemented by self-sown plants. Allow seeds to develop to save and sow the following year but leave some for goldfinches which will come to your garden to feast on them in winter. 06112018 I like umbellifers and I was casting around for suitable white umbellifers to dance in the auratum lily border.
Sow where you want them to grow.
They remain germinating for 3-4 years which should be noted at the time of purchase. Then level and smooth. This plant is best grown from seed. Ammi majus is an annual or biennial which can be sown in August to September to give tall robust plants the following summer or in spring to produce smaller plants the same year.