Sow a new crop every three weeks or so from early spring through early summer for season-long cottage flowers. Nigella’s self-seeding nature is often appreciated in cottage garden settings, and young seedlings are easy to pull or remove if desired. You can reduce self-seeding by deadheading plants as soon as the petals fall. Nigella seed pods can be dried for use in arrangements. Cut the seed pods shortly after the petals drop and before the pods mature and split. Gather stems into loose bundles and hang them upside down out of direct sun to dry.
More Varieties of Nigella
‘Mulberry Rose’ Nigella
Nigella ‘Mulberry Rose’ offers flowers that open pink and fade to rich rose on 18-inch-tall plants.
‘Cambridge Blue’ Nigella
Nigella ‘Cambridge Blue’ offers double blue flowers on 10-inch-tall plants.
‘Persian Violet’ Nigella
Nigella damascena ‘Persian Violet’ is an heirloom variety with deep purple and sky blue flowers.
Nigella Companion Plants
Evolvulus
If you love morning glories, try this low-growing cousin, which has even more gorgeous sky blue flowers. Like the morning glory that grows upward, this more earthbound beauty produces striking blue flowers all season long. And like its cousin, the flowers tend to close in the afternoon hours. In Zones 8-11, in the warmest part of the country, this tropical is a perennial; farther north, it’s grown as an annual. Its spreading habit is perfect for spilling over baskets, window boxes, and other containers. Plant established plants outdoors after all danger of frost has passed. Evolvulus likes rich, well-drained soil and needs just average water. It’s somewhat drought-tolerant, so don’t overwater.
Pentas
Pentas is one of the best butterfly-attracting plants around. It blooms all summer long, even during the hottest weather, with large clusters of starry blooms that attract butterflies by the dozens as well as hummingbirds. The plant grows well in containers and in the ground – and it can even make a good houseplant if you have enough light. It does best in full sun and moist, well-drained soil. Pentas is grown as an annual in most parts of the country, but it’s hardy in Zones 10-11. Plant it outdoors after all danger of frost has passed.
Pansy
From tiny, cheerful Johnny jump-ups to the stunning 3-inch blooms of Majestic Giant pansies, the genus Viola has a spectacular array of delightful plants for the spring garden. They’re must-haves to celebrate the first days of spring since they don’t mind cold weather and can even take a little snow and ice! They’re pretty planted in masses in the ground, but also cherished for the early color they bring to pots, window boxes, and other containers. By summer, pansies bloom less and their foliage starts to brown. It’s at this time that you’ll have to be tough and tear them out and replant with warm-season annuals, such as marigolds or petunias. But that’s part of their charm—they are an ephemeral celebration of spring!
