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PlantFiles: Bachelor's Button, Cornflower
Centaurea cyanus 'Black Gem'

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Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Centaurea (sen-TAR-ee-uh) (Info)
Species: cyanus (SY-an-us) (Info)
Cultivar: Black Gem

2 vendors have this plant for sale.

3 members have or want this plant for trade.

Category:
Annuals

Height:
24-36 in. (60-90 cm)

Spacing:
6-9 in. (15-22 cm)

Hardiness:
Not Applicable

Sun Exposure:
Full Sun

Danger:
N/A

Bloom Color:
Dark Purple/Black

Bloom Time:
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall

Foliage:
Herbaceous
Silver/Gray
Velvet/Fuzzy-Textured

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Flowers are good for drying and preserving

Soil pH requirements:
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Collect seedhead/pod when flowers fade; allow to dry
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored

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By AnniesAnnuals
Thumbnail #1 of Centaurea cyanus by AnniesAnnuals

By AnniesAnnuals
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By dicentra63
Thumbnail #3 of Centaurea cyanus by dicentra63

By dicentra63
Thumbnail #4 of Centaurea cyanus by dicentra63

No details have been posted.

Regional...

This plant has been said to grow in the following regions:

Richmond, California
Salt Lake City, Utah



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