Cornflowers Centaurea americana

Centaurea americana

American basketflower, Centaurea americana, is a tall annual native to the south‑central United States. It stands out for very large pink flower heads with creamy centers and a light honey fragrance. Plants prefer full sun, warm days, and well‑drained soils. They bloom in late spring into summer where heat arrives early. This species is useful where a big, airy accent and long stems are desired.

At‑a‑glance

  • Group/Class: Annual native basketflower
  • Height × spread: 3 to 5 ft (0.9 to 1.5 m) × 1 to 2 ft (30 to 60 cm)
  • Bloom window: late spring to early summer
  • Color & flower form: rose‑pink outer florets with creamy centers; thistle‑like heads
  • Fragrance: 2 noticeable
  • USDA hardiness: grown as annual in all zones
  • Breeder / Year / Origin: unknown
  • Cut‑flower notes: good fresh or dried; cut when half open
  • Pet safety: unknown

How it differs

  • Tallest stature among common cornflowers
  • Largest flower heads with showy bracts
  • Notable sweet scent compared with most cornflowers
  • Heat and drought tolerance once established

Strengths

  • Native annual that supports pollinators
  • Strong presence in meadows and borders
  • Performs in lean, well‑drained soils
  • Self‑sows in suitable sites

Care in one minute

  • Plant in full sun with free‑draining soil.
  • Water to establish; then allow soil to dry slightly between waterings.
  • Feeding is minimal; excess fertility reduces stem strength.
  • Stake in windy sites; deadhead to prolong bloom or allow seed for wildlife.
  • Sow in place where seasons are long; transplant carefully if started indoors.

Watch‑outs

  • Not frost tolerant; avoid late cold snaps
  • May lean in rich soil or wind; stake if needed
  • Can self‑seed freely

Best uses (tags)

cutting, meadow, pollinators, prairie, cottage

Provenance note

The only Centaurea species native to North America; recorded by USDA across the south‑central U.S.

References

Written by: Your Flowers Guide editorial team
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