Bachelor Buttons

Cornflower, Bachelor Buttons

Centaurea cyanus L.

Asteraceae (Sunflower Family)

▲ seedlings

▲ rosette stage

▲ cultivated flowering plants

▲ wild flowering plants

▲ inflorescence detail

Centaurea cyanus L., Cornflower, Bachelor’s Buttons: (Bayer Code: CENCY; US Code CECY2)

  • Native to Europe, was once a commonly-grown annual/biennial garden flower, now included in some wildflower mixes and sometimes escapes cultivation; also used as a cut flower
  • Grows 1-3 feet tall, with gray-green winged stems and alternate, narrow-lanceolate leaves
  • Inflorescences are at tips of stems on long flowering stalks
  • Ray flowers are blue, white or pink, (with blue the more common color) and edges of rays are deeply toothed
  • Bracts below inflorescence are triangular, with darker toothed margins and pointed tip
  • Prefers cooler conditions, fertile, well-drained soils, in full sun

(Posted January 19, 2019)

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