Nigella Flower Bloom Time. Unknown - Tell us. This hardy annual blooms early in spring if planted the previous fall.
Indoor Seed start If Nigella plants want to grow at home start indoors about 4-6 weeks before the last average frost. Sow either directly as below in mild or sheltered areas or for overwintering sow in pots. 19022016 Nigella is easiest to grow by seeding directly into the garden.
In mild climates sow in cool fall weather for spring bloom.
June to August Bloom Description. Sow seeds into finely textured soil in early spring as soon as the ground can be worked. As Nigella has a relatively short flowering time before it turns the flowers into outrageous horned seed podsFinky would sow another batch in early Mayalso as they are hardy he would sow again in September to have early flowers the following year. Sow seeds 2-3 inches apart and cover with 14 inch of soil.