Thompson & Morgan

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Centaurea dealbata (Large Plant)

Cornflower, Bachelor's Buttons, Knapweed

Hardy Perennial

This clump forming perennial Cornflower bears an abundance of lavender-pink flowers from midsummer, which are irresistible to butterflies and pollinating insects. Commonly known as Bachelor's Buttons, Centaurea dealbata will quickly form dense clumps of large, ornately cut foliage. Plant them en masse and they will knit together to create fabulous swathes of ground cover. This fuss-free perennial is perfect for herbaceous borders, cottage gardens and wildlife areas. Height: 90cm (36"). Spread: 60cm (24").


Lifetime Guarantee on Hardy Plants Large Potted Plant Special Offer

Ideal For:
cottage gardens, wildlife gardens, cut flower garden
Flowering Period:
June, July
full sun
    • 1 x 1 litre potted centaurea plant

    • Despatch: Within 14 days
    • £9.99
    • 2 x 1 litre potted centaurea plants

    • Despatch: Within 14 days
    • £14.99
    • 2 x 1 litre potted centaurea plants

    • Despatch: Within 14 days
    • £14.99
Grow Centaurea in borders in full sun. Knapweed is drought tolerant once established and will happily tolerate almost any soil, except those that are excessively waterlogged.
Knapweed plants require little maintenance. In autumn, remove the old foliage and faded centaurea flower stems, and apply a mulch of well rotted manure or garden compost around the base of the plant in spring.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.

Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.

Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.

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