Centaurea cyanus 'Black Gem'

Also Known As

Cyanus segetum 'Black Gem'
Black Gem Bachelor's Buttons

Plant type

annual / biennial

size

H: 12"-24"
W: 6"-12"

planting zones

1-11

More Options

Centaurea cyanus 'Black Gem' plant details

Centaurea cyanus 'Black Gem' is a broadleaf deciduous annual / biennial with blue and green foliage. In spring and summer burgundy flowers emerge. Attracts bees making it an excellent addition to pollinator gardens. Grows well with sun and regular - low water. Drought tolerant once established. Prefers to be dry in summer. Does well in lean and well-drained soil. A good option if you're seeking something heat tolerant.

CHARACTERISTICS OF Centaurea cyanus 'Black Gem'

Plant type: annual / biennial
Plant family: asteraceae
Foliage: deciduous blue and green
Mature size: 6 IN - 12 IN - wide, 12 IN - 24 IN - tall
Flowers: burgundy blooms in spring and summer
Uses: cottage garden, cutting garden, easy-to-grow, self-sowing, xeric

GROWING CONDITIONS for Centaurea cyanus 'Black Gem'

USDA Zones: 1 - 11
Sun exposure: sun
Watering frequency: regular - low
Resistant to: deer, heat
Soil needs: lean and well-drained

Nursery contributed plant descriptions

Ruffled, dark maroon, thistle-shaped flowers contrast with the silvery cast of the leaves and branching stems of this heirloom cornflower. A favorite cut flower, it was listed in Buist's 1942 catalog, but disappeared until the later 1940s. We are happy to offer it once again. Combine with silver foliage plants for a decidedly modern look. Self sows.

By: Select Seeds

Now you don't have to wait for the Black Bachelor Buttons to show up out of the mix! Ruffled, darkest maroon flowers contrast pleasantly with the silvery cast of the leaves Spring through Summer. Ooh, the new plant combo possibilities & a wonderful cut flower of course! To 2’ x 1’. Self sows!