Common Cosmos (Cosmos bipinnatus) in the Cosmos Database

1 company sells this plant

Common names:
Give a thumbs up Common Cosmos
Give a thumbs up Cosmos
Give a thumbs up Mexican Aster

General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Annual
Sun Requirements: Full Sun
Full Sun to Partial Shade
Water Preferences: Mesic
Dry Mesic
Dry
Plant Height: 24-36 inches
Flowers: Showy
Flower Color: Pink
White
Other: all shades of deep pink to white
Flower Time: Summer
Late summer or early fall
Fall
Uses: Cut Flower
Will Naturalize
Wildlife Attractant: Bees
Birds
Butterflies
Resistances: Drought tolerant
Propagation: Seeds: Sow in situ
Start indoors
Can handle transplanting
Other info: freely self sows , transplants are stunted and stay smaller.
Propagation: Other methods: Division
Pollinators: Moths and Butterflies
Bees
Containers: Suitable in 3 gallon or larger
Miscellaneous: Tolerates poor soil

Image

The Top 25 Annuals, Selected by ATP MembersThe Top 25 Annuals, Selected by ATP Members
January 18, 2014

Ever wonder what the most popular annuals appear to be? We have run a report of the most photographed and discussed annuals in our database!

(Full article29 comments)
Give a thumbs up

Photo gallery:
Date: Jul 27, 2008 1:10 PM
By Calif_Sue
Give a thumbs up
Location: Lake BluffDate: SummerBeautiful Cosmo...with the tinniest bee!
By Fran
Give a thumbs up
Location: Indiana  Zone 5Date: 2009-09-30selfsown volunteers  In the garden
By gardengus
Give a thumbs up
Location: my garden Zone 7A NCDate: 2011-10-31
By sandnsea2
Give a thumbs up
Location: my garden, Gent, BelgiumDate: 2011-10-27
By bonitin
Give a thumbs up
Location: West Valley City, UTDate: 2012-07-18
By Zencat
Give a thumbs up
Date: 2012-10-03
By Paul2032
Give a thumbs up
Location: Botanical Gardens of the State of Georgia...Athens, GaDate: 2017-07-07Pink Cosmos 005
By dawiz1753
Give a thumbs up
Location: Lake Macquarie, N.S.W., AustraliaDate: 2018-02-27
By carolem
Give a thumbs up
Location: my garden, Gent, BelgiumDate: 2011-09-11
By bonitin
Give a thumbs up
Location: my garden, Gent, BelgiumDate: 2011-03-25
By bonitin
Give a thumbs up
Image
By admin
Give a thumbs up
Location: Indiana  Zone 5Date: 2010-09-19flower bud among leaves
By gardengus
Give a thumbs up
Location: my garden, Gent, BelgiumDate: 2011-09-23
By bonitin
Give a thumbs up
Location: West Valley City, UTDate: 2012-07-17
By Zencat
Give a thumbs up
Date: 2012-10-02
By Paul2032
Give a thumbs up
Date: 2012-10-03
By Paul2032
Give a thumbs up
Date: 2012-10-03
By Paul2032
Give a thumbs up
Date: 2012-10-03
By Paul2032
Give a thumbs up
Date: 2012-10-04
By Paul2032
Give a thumbs up
Date: 2009-03-14Photo: Agost1NH0
By SongofJoy
Give a thumbs up
Courtesy Outsidepride
By vic
Give a thumbs up
Date: 2014-10-26Photo courtesy of: MomentsForZen
By admin
Give a thumbs up
Date: 2014-10-26Photo courtesy of: MomentsForZen
By admin
Give a thumbs up
Location: CZ Sirem My gardenDate: 4000-06-27
By admin
Give a thumbs up
Location: Athol, MADate: 2017-07-02
By joannakat
Give a thumbs up
Location: West Valley City, UTDate: 2012-06-24Flower buds just before opening.
By Zencat
Give a thumbs up
Location: West Valley City, UTDate: 2010-10-09
By Zencat
Give a thumbs up
Date: 2013-06-08
By ninell
Give a thumbs up
Location: CZ Sirem My gardenDate: 2014-10-17
By admin
Give a thumbs up

This plant is tagged in:
Image Image Image Image Image Image Image Image Image Image Image

Comments:
Posted by Newyorkrita (North Shore, Long Island, NY ) on Sep 29, 2011 8:47 PM

Cosmos often get powery mildew in my garden so I spray them with the same systemic fungicide that I use on my roses.

[ Reply to this comment | Give a thumbs up ]

Posted by gardengus (Indiana Zone 5b) on Oct 25, 2011 7:36 AM

I find cosmos self-sows nicely in my garden and if I wait till the plants are about a foot tall to pull and transplant, they grow about 1/3 shorter than the non-transplants.
This can be a good thing when you want the look but not the height.
They put on their best show in the fall. For earlier blooms, start indoors in pots then set out.

[ Reply to this comment | Give a thumbs up ]

Posted by bonitin (Ghent, Belgium - Zone 8a) on Jan 25, 2012 1:18 AM

I used to buy them on the flower market, but they never lasted long, became prone to illness and faded away after just a month.
Last year, I decided to try them from seed, so glad I did. The plants grew vigorously and healthy, blooming non-stop and generously, being a valuable source of food for bees, butterflies etc.. we're having an exceptional soft winter so far, and to my astonishment the plant though looking very tatty, still hasn't given up the spirit and that in the end of January!!
I grow them in a big container in a sunny spot on a large balcony, as my garden is too shady for them.

[ Reply to this comment | Give a thumbs up ]

Posted by robertduval14 (Mason, New Hampshire - Zone 5b) on Mar 5, 2013 10:43 PM

We planted these once...just scattered seed over a new bed before adding mulch. Three seasons later and they still show up, gladly self seeding. (Though the number of them has decreased slowly). Always a welcome addition to my flower gardens.

[ Reply to this comment | Give a thumbs up ]

Posted by Catmint20906 (Maryland - Zone 7a) on Aug 23, 2014 2:48 PM

Cosmos (Cosmos bipinnatus) has been a pollinator magnet in my garden, attracting numerous bees and butterflies with its red and pink blossoms. It is also easy to grow from seed.

Cosmos bipinnatus is enjoyed by many native bee species, including green metallic, sweat, and longhorned bees.

This plant also reportedly attracts beneficial insects to the garden, including lacewings, hoverflies, mini-wasps, and pirate, damsel, and big-eyed bugs. These beneficial insects feed on many different garden pests including: aphids, mealybugs, thrips, small caterpillars, mites, moth eggs, some scales, armyworms, codling moths, European corn borer, flies, gypsy moths, cabbageworms, leaf hopper nymph, insect eggs, tarnished plant bugs, and treehoppers.

[ Reply to this comment | Give a thumbs up ]

Plant Events from our members
Catmint20906 On June 24, 2015 Bloomed
» Post your own event for this plant

Discussion Threads about this plant
Thread Title Last Reply Replies
Beautiful photography! by dave May 7, 2012 11:28 PM 1
Another flower problem, dying Cosmos by Scarabeenie Jun 10, 2018 8:02 AM 10
Annuals 2017 by islander Oct 26, 2017 2:26 PM 41
need help with ID by ElJardineroGringo Nov 25, 2016 7:37 AM 7
Need help with over growing plants by Smartin2010 Jul 10, 2016 5:55 PM 7
Cosmos hybrid by bonitin Jan 20, 2016 3:17 AM 4
What kind of a Cosmos? by bonitin Jan 9, 2016 9:48 AM 8
Moving forward with the seed swap feature by dave Nov 5, 2015 1:08 PM 105
Zinnia's and Cosmos questions . . . by Denman55 Aug 13, 2015 9:16 AM 17
What seeds are you ordering this year? by luvsgrtdanes Feb 22, 2015 10:07 AM 78
More bee friendly by Bonehead Oct 29, 2014 8:00 PM 22

« Add a new plant to the database

» Search the Cosmos Database: by characteristics or by cultivar name

« See the general plant entry for Cosmos

« The Cosmos Database Front Page

« The Plants Database Front Page

Today's site banner is by Fleur569 and is called "Surviving a Harsh Winter"