Centaurea dealbata
Silver Centaury
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Centaurea dealbata, commonly known as Persian Cornflower or Knapweed, is a charming perennial that brings a splash of colour and texture to garden borders and wildflower meadows. This plant is native to the Caucasus region and is part of the Asteraceae family. It is valued for its attractive, deeply lobed, silver-green foliage and its showy, thistle-like flowers that bloom from late spring to midsummer. The flowers are typically a soft, rosy-pink with a central ring of white, creating a lovely two-toned effect that stands out in any garden setting.
Centaurea dealbata typically grows to a height of 45-60 cm (18-24 inches) with a similar spread, forming a neat, clump-forming habit. It thrives in well-drained soils and prefers a position in full sun to partial shade, making it a versatile choice for a variety of garden environments. Hardy in H6 zones, this plant is well-suited to the UK climate, where it can tolerate cold winters and benefit from the mild, temperate growing season. Centaurea dealbata is relatively low-maintenance, requiring little more than deadheading to prolong the flowering period and occasional division to maintain plant vigour. It is also resistant to most pests and diseases, making it a reliable addition to cottage gardens, mixed borders, and naturalistic planting schemes. Additionally, its nectar-rich flowers are highly attractive to pollinators like bees and butterflies, adding ecological value to its ornamental appeal.