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Guaranteed to Grow
Easy to Grow
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Black Ball Cornflower

Quick Facts:

  • Dark, nearly black flowers
  • Attractive, silvery stems and leaves
  • Perfect for goth gardens
  • Deer, rabbit, and drought resistant
  • Grows 30" tall; Blooms in summer

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✓ Plant with Confidence—Guaranteed Through 2027

Quantity: Packet (250 Seeds)

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We ship to the United States, its territories and outlying islands. Returns are accepted within 30 days of receipt. Full warranty information can be found here.

We guarantee our seed to be fresh, vigorous, untreated, and true to variety.

Each packet is guaranteed through the year printed on the packet, plus one full additional growing year.

If your seeds fail to germinate, arrive damaged, or do not grow true to type, please contact us and we will make it right through replacement seed, store credit, or refund when appropriate.

View our full warranty policy here.

Black Ball Cornflower

More about Black Ball

Centaurea cyanus

Black Ball Cornflower is one of the most enchanting black flowers you can grow—deep, velvety blooms in a rich wine-black shade that reads almost ink-dark at a distance. Set against soft, silvery foliage, the 2-inch thistle-like flowers create striking contrast and lend a distinctly moody elegance to the garden. If you’re designing a gothic garden or craving dark flowers to balance brighter summer blooms, this bachelor button delivers drama without difficulty. Plants average 30 inches tall, bloom continually through the season, and readily self-seed for naturalized drifts year after year. Cut stems hold beautifully in the vase, making Black Ball an unforgettable choice for a dark, romantic black flower ... More

Less

Centaurea cyanus

Black Ball Cornflower is one of the most enchanting black flowers you can grow—deep, velvety blooms in a rich wine-black shade that reads almost ink-dark at a distance. Set against soft, silvery foliage, the 2-inch thistle-like flowers create striking contrast and lend a distinctly moody elegance to the garden. If you’re designing a gothic garden or craving dark flowers to balance brighter summer blooms, this bachelor button delivers drama without difficulty. Plants average 30 inches tall, bloom continually through the season, and readily self-seed for naturalized drifts year after year. Cut stems hold beautifully in the vase, making Black Ball an unforgettable choice for a dark, romantic black flower bouquet. Blooms in summer.  Each packet contains a minimum of 250 seeds.

Centaurea cyanus

Black Ball Cornflower is one of the most enchanting black flowers you can grow—deep, velvety blooms in a rich wine-black shade that reads almost ink-dark at a distance. Set against soft, silvery foliage, the 2-inch thistle-like flowers create striking contrast and lend a distinctly moody elegance to the garden. If you’re designing a gothic garden or craving dark flowers to balance brighter summer blooms, this bachelor button delivers drama without difficult... read more

read less

Centaurea cyanus

Black Ball Cornflower is one of the most enchanting black flowers you can grow—deep, velvety blooms in a rich wine-black shade that reads almost ink-dark at a distance. Set against soft, silvery foliage, the 2-inch thistle-like flowers create striking contrast and lend a distinctly moody elegance to the garden. If you’re designing a gothic garden or craving dark flowers to balance brighter summer blooms, this bachelor button delivers drama without difficulty. Plants average 30 inches tall, bloom continually through the season, and readily self-seed for naturalized drifts year after year. Cut stems hold beautifully in the vase, making Black Ball an unforgettable choice for a dark, romantic black flower bouquet. Blooms in summer.  Each packet contains a minimum of 250 seeds.

Flowers
Zinnia Flowers

How to Grow Bachelor's Buttons

Bachelor's Buttons need well-draining soil with a pH between 6.0 and 7.5, and full sun for at least 6 hours a day. They prefer cooler temperatures and should be planted in early spring or late summer.

After danger of frost has passed, sow seeds 1/8" deep in average, well-drained soil.  Germination will occur in 5-24 days.  After germination has occurred, thin to one seedling every 10-12". 

Harden off seedlings for a few days prior to transplanting. After danger of frost has passed, dig a hole roughly the size of the root ball and lower the seedling in, being careful not to disturb the roots. Backfill with loose soil and water well. Space plants 10-12" in all directions. Keep well-watered until the plants are established.

Bachelor's Buttons are generally very healthy and easy-to-grow. Removing spent blooms will promote flowering.

Bachelor's buttons make excellent cut flowers. They have a long vase life, come in a variety of colors, and are easy to arrange. If harvested as the blooms are just beginning to open, you can expect the flowers to last about a week in a vase.

CONSIDERATIONS:

To harvest bachelor's buttons seeds, wait until the flowers have dried and turned brown. Cut the flower heads off and place them in a paper bag. Shake the bag to release the seeds.

HARVESTING SEED:

SEED LONGETIVITY:

Bachelor's buttons seeds typically maintain their viability for up to three years when stored in a cool, dry place.

Dirty hands in the garden

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