Close-up of delicate white Corncockle Bianca flowers by Bishy Barnabees Cottage Garden Ltd, featuring thin green stems in a lush garden with more white blooms, greenery, and a few orange flowers in the background.
Close-up of delicate white Corncockle Bianca flowers by Bishy Barnabees Cottage Garden Ltd, featuring thin green stems in a lush garden with more white blooms, greenery, and a few orange flowers in the background.A hand holds a glass bottle with a Corncockle Bianca bloom by Bishy Barnabees Cottage Garden Ltd, surrounded by colorful garden flowers and green leaves against a white wooden wall.A close-up of a single white Corncockle Bianca flower by Bishy Barnabees Cottage Garden Ltd, featuring delicate petals with small brown speckles, set against a blurred green and purple floral background.A yellow circular badge with a black and white bee in the center reads "RHS PLANTS FOR POLLINATORS"—ideal for supporting pollinators when choosing Corncockle Bianca seeds by Bishy Barnabees Cottage Garden Ltd.The Corncockle Bianca by Bishy Barnabees Cottage Garden Ltd features a large white flower with delicate petals and visible stamens, blooming on a vine with green leaves and tendrils against a light gray wooden wall.Close-up of Corncockle Bianca by Bishy Barnabees Cottage Garden Ltd—delicate white flowers with curved petals and long green stems bloom elegantly in a garden, ideal for moon gardens with blurred greenery in the background.A woman in a denim dress stands among tall white Corncockle Bianca flowers from Bishy Barnabees Cottage Garden Ltd, holding blooms and gazing down amid cloudy skies and trees.A close-up of a white Corncockle Bianca flower from Bishy Barnabees Cottage Garden Ltd, displaying delicate pale brown veins on its petals, set against a blurred background of green stems and more white blooms.A bumblebee hovers near Corncockle Bianca’s delicate white blooms atop long stems in a lush field. The blurred background highlights these graceful flowers by Bishy Barnabees Cottage Garden Ltd, ideal for a moon garden.Close-up of delicate white Corncockle Bianca flowers from Bishy Barnabees Cottage Garden Ltd, with slender green stems and leaves. The petals feature fine veins and yellowish centers, densely filling the field under a cloudy sky.Close-up of delicate white blooms from Corncockle Bianca by Bishy Barnabees Cottage Garden Ltd, showing pale green stems and buds in a field, with more blurred flowers in the background beneath an overcast sky.
Annual Pollinator

Corncockle Bianca

Agrostemma githago 'Bianca' — pure white Corncockle selection

£2.35approx. 100 seeds

Pure white form of the British cornfield wildflower — large silky trumpet flowers on slender silver-grey stems, glowing in low evening light. Perfect for moon gardens.

Sowing months
JanFebMarAprMayJunJulAugSepOctNovDec
Height
Up to 90cm
Spread
30cm
Spacing
20cm
Position
Full sun
Soil
Well-drained, sandy or loamy soil
Grow guide
How to grow Corncockle Bianca
Read the full guide →
About this variety

The pure white form of Britain's lost cornfield flower. Large silky trumpets on slender silver-grey stems, weaving up through whatever grows beside them and swaying in the slightest breeze.

The white has a luminous quality in low light that the magenta species does not, which makes 'Bianca' the one for a moon garden, an all-white border, or a seat you use in the evening. It self-seeds reliably and the offspring stay white if kept away from coloured corncockle.

Every part of this plant is poisonous if eaten, particularly the seed. That is worth knowing before you plant it somewhere children forage. Wear gloves when handling, and site it accordingly. Like most of its relatives it has a sensitive taproot and does best sown direct on poor, well-drained ground.

Plant alongside

Corncockle Bianca pairs beautifully with these cottage garden classics

Corncockle
Corncockle
£2.20
Cornflower Blue Ball
Cornflower Blue Ball
£2.30
Cosmos Purity
Cosmos Purity
£2.40

RHS Plants for Pollinators

This plant has been assessed by the Royal Horticultural Society and recommended as especially beneficial to bees, butterflies and other pollinators. Growing plants like this directly supports UK pollinator populations — something close to our hearts at Salle Moor Hall Farm, where we see the difference a cottage garden full of the right plants can make.

Learn more at RHS.org.uk →