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Corncockle Bianca - Agrostemma githago

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Corncockle Bianca is an elegant variety with large white flowers on long, straight stems. Once a common sight in the cornfields, now corncockles are more often seen growing in a beautiful cottage garden border.

They are good for a cut flower garden as they have a long vase life. They look amazing when tumbled into a vase with other informal flowers, or equally enchanting if displayed independently.

Easy to grow, either started undercover or sowed directly into the soil.  Deadhead the flowers regularly to encourage more flowers.  Self-seeds freely.

Seed Quantity: 100 Seeds

Type: Hardy Annual

Genus Agrostemma githago

Sow Seeds Sow the seeds directly into the soil in September or April.

Grow them close together and use some netting for support.

Or sow into modules, pot on as required, and overwinter in an unheated greenhouse or polytunnel.

Germination is approximately 14 days.

Plant Out Can grow to about 1m and will benefit from growing through the netting for support.  Likes full sun.

Flowers July-September

Height and Spread: 60–90 cm high x 30cm spread

Corncockle Bianca - Agrostemma githago

RHS Plants for Pollinators

The RHS Plants for Pollinators mark is only given to plants that support pollinating insects.

Find out more at

    Close-up of a Corncockle Bianca with its distinctive black center in a field
    Emblem representing the RHS Plants for Pollinators initiative featuring Corncockle Bianca
    Corncockle Bianca flower displayed in a vase on an outdoor porch
    Corncockle Bianca blooms adding beauty to a lush garden landscape
    Individual holding a vase with a Corncockle Bianca flower inside
    Cluster of Corncockle Bianca blossoms flourishing in a natural field setting
    Corncockle Bianca flower positioned against the backdrop of a white house exterior

    Customer Reviews

    Based on 2 reviews
    Corncockle Bianca

    Last year I grew lots of fantastic corncockle, but this will be the first time I've tried Bianca.
    There's always so many amazing seeds/flowers to choose from at Bishybarnabees Cottage Garden. Delivered swiftly and hugely successful germination 🌱🥰🌱

    Corncockle seeds

    Fast delivery well packaged seeds. Top supplier ****

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    • Fast Dispatch

      We aim to dispatch all orders within 24hrs of receiving them

    • Packaging

      Seeds are delivered in eco friendly packaging and thick card envelopes.

    • Returns

      We offer a full refund on items returned in their original packaging