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Chocolate Cosmos Wikimedia Commons
Asteraceae

Chocolate Cosmos

Cosmos atrosanguineus

Romance, mystery, sweetness.

Family
Asteraceae
Genus
Cosmos
Native to
Mexico
Bloom season
Summer, Fall
Type
Tender perennial
Height
45–75 cm (18–30 in)
Sunlight
Full sun
Soil
Rich, well-drained
Water
Moderate
Hardiness
7–11
Lifespan
Tender perennial

Did you know

  • The blooms smell genuinely of chocolate—specifically of vanilla and cocoa—an aroma that intensifies in the afternoon heat to attract specialist pollinators.
  • Considered extinct in the wild for nearly a century, every chocolate cosmos in cultivation today is a clone of a single sterile plant collected in Mexico in 1902.
  • In 2022, a new fertile form was finally bred by Japanese horticulturalists, ending 120 years of botanical bachelor existence.
  • The Latin 'atrosanguineus' means 'dark blood-red'—the velvety petals are nearly black in low light and produce a rare floral pigment called cyanidin.
  • Despite its scent, the plant is not related to true chocolate (Theobroma cacao); the resemblance is pure aromatic coincidence and a botanical magic trick.

Color meanings

0

love

1

mystery

2

elegance

Uses

  • Container gardens
  • Borders
  • Cut flowers
  • Specimen plant