OK
In progress indicator

Centaurea cyanus 'Black Ball' (Cornflower 'Black Ball')

Beginner
skill rating
1 hour care
per year
0.75m
Max height
0.15m
Max spread
1-2 years
To maturity

Plant details

Botanical name

Centaurea cyanus 'Black Ball'

Other names

Cornflower 'Black Ball'

Genus

Centaurea Centaurea

Variety or Cultivar

'Black Ball' _ 'Black Ball' is an upright, branching annual forming a mound of dark crimson flowers in the summer.


Centaurea cyanus 'Black Ball' is: Deciduous

Habit

Upright

Flower

Dark-red in Summer

Foliage

Green in Summer

How to care

Watch out for

Pests

Generally pest free

Powdery mildew Powdery mildew

General care

Pruning

Deadheading helps to prolong the flowering season.


Sign up for your FREE ACCOUNT today or login to receive detailed monthly care instructions

Where to grow

Centaurea cyanus 'Black Ball' (Cornflower 'Black Ball') will reach a height of 0.75m and a spread of 0.15m after 1-2 years.

Suggested uses

Beds and borders, Bees (attract & feed bees), Coastal, Containers, Flower Arranging, Wildflower, Wildlife

Cultivation

Grow in well-drained soil in full sun. Autumn sowing will produce larger, earlier-flowering plants.

Soil type

Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

We do not currently have companion plants added for this plant.

Botanical name

Centaurea cyanus 'Black Ball'

Other names

Cornflower 'Black Ball'

Genus

Centaurea Centaurea

Variety or Cultivar

'Black Ball' _ 'Black Ball' is an upright, branching annual forming a mound of dark crimson flowers in the summer.

Foliage

Deciduous

Habit

Upright


Colour

Flower

Dark-red in Summer

Foliage

Green in Summer


How to care

Watch out for

Pests

Generally pest free

Specific diseases

Powdery mildew

General care

Pruning

Deadheading helps to prolong the flowering season.


Monthly care advice


Where to grow

Centaurea cyanus 'Black Ball' (Cornflower 'Black Ball') will reach a height of 0.75m and a spread of 0.15m after 1-2 years.

Suggested uses

Beds and borders, Bees (attract & feed bees), Coastal, Containers, Flower Arranging, Wildflower, Wildlife

Cultivation

Grow in well-drained soil in full sun. Autumn sowing will produce larger, earlier-flowering plants.

Soil type

Loamy, Sandy

Soil drainage

Well-drained

Soil pH

Acid, Alkaline, Neutral

Light

Full Sun

Aspect

South, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 10, Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4, Zone 3, Zone 2

In order to add a note on this plant, please add this plant to your plant lists.

In progress indicator
Full size image
In progress indicator
Caption

Caption

Cancel and close this form
In progress indicator
This plant likes... Garden match
Soil types: Loamy, Sandy Tell us...
Soil drainage: Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

GARDENS WITH THIS PLANT

My Garden
My Garden
Amanda
My Garden
My Garden
Adele Kløve
Sandra Boyce
Sandra Boyce
Sandra Boyce
My Garden
My Garden
Dave & Jane Sinnett
My Garden
My Garden
Anne Moore

ARTICLES WITH THIS PLANT

The Wedgwood Garden

By London and Sussex based garden designer Jo Thompson. The Wedgewood Garden is a striking space for a strong, successful woman. read more

The Living Legacy Garden

The ‘Living Legacy’ Garden commemorates the 200th anniversary of the Battle of Waterloo, and celebrates the role of Wellington College as the national memorial to the 1st Duke of… read more

The Brewin Dolphin Garden by Cleve West - Best in Show 2012

read more


Report content or feedback to Shoot

To add ? to your lists,
login to your account or subscribe.

Find out more about plant lists here

or Login


To check if this plant is suitable for your garden first login to your account or subscribe.

or Login

In progress indicator
Note

Note

You are adding a note to: ?

Cancel