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Cosmos atrosanguineus
Cosmos atrosanguineus
Garden Diary

Date purchased or acquired:

Where acquired:

Location in the garden:


The next time you are buying perennials please look for our helpful labels and blue pots, and remember "The best perennials come out of the blue"!

Cosmos atrosanguineus

Chocolate Cosmos

USDA Zone: 8-9

Plant number: 1.168.050

Not only beautiful in bloom, Chocolate Cosmos will amaze every visitor to your garden. This forms a medium-sized mound of dark green leaves, bearing cup-shaped blooms of deep burgundy-red, with the distinctive and rich fragrance of dark chocolate. Plants are slow to grow in spring, and love summer heat. The tuberous roots may be wintered indoors like a Dahlia, stored in a cool basement. Consider growing this in a container and wintering the whole pot indoors in the basement, keeping it sparingly watered through the winter months. Bring up to the light in early spring and water, to get a head start on the season.

Further details for
Cosmos atrosanguineus

Optimal Growing
Appearance and
Sun Exposure
  Full Sun
Soil Type
  Normal or
Soil pH
  Neutral or
  Alkaline or
Soil Moisture
Care Level
Flower Colour
Blooming Time
  Mid Summer
  Late Summer
  Early Fall
Foliage Color
  Deep Green
Plant Uses & Characteristics
  Accent: Good Texture/Form
  Alpine & Rock
  Cut Flower
  Deer Resistant
   45-75 cm
   18-29 inches
   25-30 cm
   10-12 inches
Foot Traffic
Growth Rate