Corncockle Bianca
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Description
Agrostemma githago 'Bianca' White Corncockle 'Bianca'
The pure white form of Britain's lost cornfield wildflower — large open silky trumpets glowing against slender silver-grey stems, swaying with grace and movement in the slightest breeze. 'Bianca' is the perfect choice for a moon garden, an all-white border, or any planting where luminous evening colour matters.
Once a rare survivor of the British cornfield meadow, Corncockle 'Bianca' is the selected pure white form — same elegant weaving habit, same silky-textured large trumpet flowers, same airy grace, but in glowing pure white rather than the species magenta-pink. The white petals have a luminous quality in low evening light, which makes 'Bianca' particularly outstanding in moon gardens or beside white-painted garden seats where dusk light catches the silvery stems. As a hardy annual, it grows to 75–90cm with the same characteristic weaving habit (slender wiry framework that interlaces with companion plants for support). RHS Plants for Pollinators recognised; particularly valued by long-tongued bumblebees. Self-seeds reliably; offspring largely retain the white colour if grown away from coloured Corncockle.
A note on growing
Like its magenta parent, 'Bianca' has a sensitive taproot and resents being moved — direct sowing into its final position is essential. Sow direct outdoors in September for early summer flowers the following year, or in March to May. Scatter onto finely raked soil, cover with 1cm of soil. Germination 7–14 days. Full sun, poor to average well-drained soil — 'Bianca' thrives in lean ground. The weaving growth habit means the plant grows naturally up through taller companions for support; plant in groups so the slender stems can support each other.
⚠️ Safety note: As with all forms of Corncockle, all parts of 'Bianca' (especially the seeds) are poisonous if ingested. Wear gloves when handling.
Where it shines
In moon gardens and white borders, where the luminous trumpet flowers genuinely glow against silver-grey stems in low evening light. In wildflower meadows for the historical resonance. In cottage borders for the airy weaving character — 'Bianca' interlaces beautifully with companion plants rather than competing. As a cut flower for romantic all-white arrangements; the silky petals catch indoor light beautifully. In wildlife gardens, the high pollinator value (long-tongued bumblebees particularly) is genuinely useful.
Plant alongside
For a recreated British wildflower meadow, combine 'Bianca' with the magenta species Corncockle and the electric blue of Cornflower 'Blue Ball' for an authentic cornfield meadow scheme. In a moon garden, pair with Ammi majus, the pure white Cosmos 'Purity' (if stocked) and silver-leaved Lychnis coronaria. The luminous white also works beautifully against the deep indigo of Clary Sage 'Oxford Blue'.
Delivery
The seeds will be dispatched direct to you by Bishy Barnabees. Please allow up to 5 days for delivery.
Delivery & Returns
Delivery:
Delivery to mainland UK is calculated at checkout. For all other areas and large orders please ask for a quote. Orders will be sent by express next day delivery (DPD). They will be dispatched on a next working day service, with the exception of Ireland where it may take two days. Please allow up to 48 hours for delivery in the UK as the couriers may have already been and collected on the day you send your order in. Smaller orders for pouches, pockets, bags and pots may be sent via Royal Mail delivery. Please ensure you supply an email address and a mobile so you can be updated about your delivery. Should you have any problems with your delivery, please contact us at sales@naturalgrower.co.uk.Special Deliveries
Saturday or weekday morning deliveries can be arranged, but there will be a surcharge. Please contact us to request a price for either of these delivery services. If you need a parcel sending outside of the UK, please contact us for a quote.Returns:
If you are not completely happy with any product that you have ordered from us, you may return it to us in its original condition any time within 14 calendar days from the date of dispatch. Products must be returned in their original condition. Please contact us at sales@naturalgrower.co.uk to arrange a return. If you return a product by post, you will need to pay the costs of returning the product to us and obtain proof of posting.
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