General Plant Information (Edit)
Plant Habit: Herb/Forb
Sun Requirements: Full Sun
Full Sun to Partial Shade
Plant Height: 30 inches
Plant Spread: 18 inches
Flowers: Showy
Fragrant
Flower Color: Russet
Other: dark red to a maroon dark browm
Flower Time: Summer
Late summer or early fall
Underground structures: Bulb
Uses: Cut Flower
Suitable as Annual
Wildlife Attractant: Bees
Birds
Butterflies
Propagation: Seeds: Sow in situ
Start indoors
Other info: Seed is impossible.
Propagation: Other methods: Division
Other: Tuberous root
Containers: Suitable in 1 gallon
Suitable in 3 gallon or larger
Needs excellent drainage in pots

Image
Common names
  • Chocolate Cosmos
  • Cosmos

Photo Gallery
Location: Loki Schmidt Garten - Botanischer Garten der Universität Hamburg
Date: 2022-09-13
Location: Eureka, CA
Date: 2019-06-29
Location: Heighleygate garden centre, Northumberland
Date: 2011-07-07
Location: Container-West
Date: 2016-07-05
Location: Washington 8b
Date: 2017-07-28
Location: Oxfordshire, England
Date: 2016-07-02
The rabbits spared me just this one bloom!

Date: c. 1861
illustration by W. Fitch from 'Curtis's Botanical Magazine', 1861
Location: Botanical Garden of the University of Münster
Date: 2017-09-19
Location: Dearborn Heights MI
Date: 2010-05-31
My yard, zone 6
Location: Western Washington
Date: 2013-08-27
Location: all photos from my gardens
Date: 2018-08-01

Date: 2007-10-09
Location: Botanical Garden of Münster
Date: September
credit: Agnes Schulte
Location: central Illinois
Date: summer 2007

Photo: Björn Appel, Wikimedia Commons Username Warden
Location: All pictures taken in/on my gardens/greenhouse/property
Date: 2020-02-28
'Brownie'
Location: central Illinois
Date: 7-18-07
Location: Eureka, CA
Date: 2019-06-29
Kavita lillies in same pot, daylilies in background
Location: central Illinois
Date: 2014-04-24
Location: My garden, Ghent, Belgium
Date: 2016-08-07
Location: Kalama, Wa.
Date: 2006-08-06
  • Uploaded by Joy
Location: Dearborn Heights MI
Date: 2010-05-31
My yard, zone 6
Location: central Illinois
Date: July 2007
Location: central Illinois
Date: 2014-06-15
Comments:
  • Posted by jmorth (central Illinois) on Oct 30, 2011 10:05 PM concerning plant:
    If grown in colder zone than listed, may be stored frost free over winter. Chocolate pudding color with a chocolate fragrance (actually a light vanillin scent, a scent often associated with chocolates).
    Plant is extinct in the wild.(Mexico). Vegetative propagation from a single tuber in 1902 has maintained availability.
    Quite the conversation piece..
Plant Events from our members
jmorth On April 20, 2014 Obtained plant
Brent and Beckys
KelliW On March 4, 2019 Seeds germinated
1 germinated
KelliW On February 23, 2019 Seeds sown
indoors, seeds from chiltern 'black magic', sown in paper towel
ShawnSteve On June 4, 2022 Plant Ended (Removed, Died, Discarded, etc)
Tubers had arrived so very late, I think they'd already rotted. AKA, "D.O.A." Rather unfortunately.
ShawnSteve On April 5, 2022 Seeds germinated
From Uprising Seeds packet. About completed with germination, of around a dozen seedlings.
(Ex. C.F. Farm.)
Sent as a gift from Loretta, earlier on, during late Winter.
ShawnSteve On April 5, 2022 Plant emerged
Cv. 'C.F.F. Chocolat' already starting to grow, from (self fertile,) tuber, recently received from Chocolate Flower Farm.
ShawnSteve On December 30, 2021 Miscellaneous Event
Pre-odered tuber, for Spring delivery of seed producing cultivar.
ShawnSteve On August 27, 2021 Seeds germinated
Sourced from Chocolate Flower Farm. Seed cv. 'CFF Chocolat', in special production, by Marie. U.S. supplier of not only seeds, yet tubers & plants too, of fertile varieties. (When "in stock".)
ShawnSteve On July 5, 2021 Miscellaneous Event
Not certain about differences in color of the cotyledons with these seedlings If are any indication of ones that are weaker, due to being more closely like, that of true to species. Or if because of tending to be more like those with more of mixed ancestry.

While three are much darker green in color, & growing quite strongly, & more normally than those three, which are obviously much weaker, having the pale cotyledons. I should think the more normally appearing, & better growing ones, should grow more quickly, & flower sooner.
Hopefully, some will produce tubers, prior to entering into dormancy.

In any case, should like to get ahold of the older version, of atrosanguineus, next year. For possible future cross pollination attempts.
ShawnSteve On July 3, 2021 Seeds germinated
That was rather quick ! (I was concerned, a couple may have rotted, during time spent indoors with cold A.C.) while germinating, during heavy downpours As I'd brought them indoors, to avoid being hit by "Flash Flood", & possibilty having been completely washed away.
ShawnSteve On June 26, 2021 Seeds sown
Seed variety, of 'Black Magic'. While it is summer, I'm not waiting for cooler weather, to start these seeds.
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Discussion Threads about this plant
Thread Title Last Reply Replies
flopper? by Onewish1 Jul 2, 2012 12:45 AM 6

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