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Cosmos bipinnatus ‘Sea Shells’

Cosmos bipinnatus 'Sea Shells'

KOZ-mose by-pin-AY-tus

This unique annual produces quilled blossoms of hollow, tube-shaped petals that radiate from the center in shades of white, pink, or carmine red. The flowers, which bloom all summer long, sometimes have bicolored interior and exterior tubes. 

Noteworthy CharacteristicsThis Mexican native is loved by butterflies. It produces excellent cut flowers and is ideal for a cutting garden, mixed border, or annual border. 

CareDeadhead to prolong flowering, and also leave some seeds to self-sow. The plants are moderately drought and heat tolerant.

PropagationSow seed in situ in late spring or at 61°F in mid-spring.

ProblemsStem canker, powdery mildew, Rhizoctonia stem rot, gray mold, aphids.

  • Genus : Cosmos
  • Plant Height : 3 to 6 feet
  • Plant Width : 6 to 12 inches
  • Plant Type : Annuals
  • Tolerance : Drought Tolerant
  • Moisture : Dry to Medium
  • Bloom Time : Early Fall, Early Summer, Fall, Late Summer, Summer
  • Growth Rate : Fast
  • Light : Full Sun
  • Maintenance : Moderate
  • Flower Color : Pink, Red, White
  • Characteristics : Self Seeds
  • Plant Seasonal Interest : Summer Interest
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