• slide
  • slide
  • slide
  • slide
  • slide
  • slide
  • slide

Sulphur Cosmos

Botanical Name
Cosmos sulphureus
Hardiness
Half hardy annual
Height
12 to 72 inches
Width
12 to 24 inches
Flowers
Summer till frost: yellow, orange, red
Light
Full sun
Soil
Well-drained
Planting & Care
  • Space plants 12 inches apart
  • Avoid over fertilizing - it results in floppy plants with no blooms
Problems
Aphids, bacterial wilt, aster yellows, Japanese beetles
Varieties
  • Cosmic Orange - 2" flowers, 12" tall, AAS
  • Diablo - semi double orange flowers, AAS winner 1974, 18-30"
  • Ladybird Series - 12" semi double flowers
  • Sunny Red - 1987 AAS winner, flowers red with yellow, 12"

Related Content

Upcoming Appearances


July 13
Pasquesi Home & Gardens
Lake Bluff, IL

July 14
Sanger House Gardens
Milwaukee, WI

July 20
Ebert's Greenhouse Village
Ixonia, WI

Learn More

Book an Appearance

Learn More

Win Melinda's Trees and Shrubs DVD set!

ENTER NOW