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


Some Herbs may be too tall for our standard packaging and will be trimmed to fit. This will not be detrimental to the plant but will mean that these herbs will flower later in the year.

The Blister packs used to protect our beautiful herbs during transit are made from 100% recycled plastic and can be recycled kerbside.

Cornflower 'Black Ball' (Centaurea cyanus 'Black Ball')Herb in 9cm Pot

The Blue Cornflower was once a common site in all corn-fields in the UK sadly it is not so much of a common site today. This variety is a striking dark crimson double flowered version and is well worth growing for its lovely flowers with ruffled petals which appear from early to late summer. This Hardy annual is perfect for naturalising in a sunny wildflower meadow or scattered among the borders of a cottage style planting scheme.  It is a hardy annual, easy to grow in well drained soil and full sun. It will flower from June - September.  Enjoyed by butterflies and bees the blooms make good cut flowers which also dry well and retain their colour. 

Herb Usage

The flowers of the cornflower have been used in herbal medicine and are considered to have a tonic and stimulant effect and was once commonly used as an eyewash, however today little emphasis is put on this particular flower for herbal use. The flower petals are edible and have a clove-like taste can be scattered on a salad if desired. However, we recommend this hardy annual for its ornamental qualities primarily.

 Buy Cornflower 'Black Ball'Online

Our Cornflower 'Black Ball' herb plants are generally available to buy online between May and September.




Centaurea cyanus 'Black Ball' (Cornflower 'Black Ball')Herb Plant
Aspect/Site Full sun
Soil Type Free draining soil
Flower Colour Purple
Height 75cm
Spread 30cm
Latin Name Centaurea Cyanus
Hardiness RHS rating H2 - Annual
Culinary Salads
Scented None
Medicinal/Cosmetic Herbal medicine
Flowering/Harvest/Interest Summer
Special Features Cut Flowers
Type of Garden Wildlife
  • 4

    Posted by Lin Chaplin on 19th Jul 2021

    Arrived very promptly and cds are just flowering.

  • 5

    Posted by Cathy on 18th Jun 2021

    Beautiful plants, will definitely be purchasing more....thank you!

  • 5
    Black Ball Cornflowers

    Posted by Annabelle on 10th Aug 2020

    Great condition and arrived quickly in suitable sturdy packaging. Really pleased.