Photo by Melody

PlantFiles: Common Cosmos, Mexican Aster
Cosmos bipinnatus 'Summer Dreams'

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Cosmos (KOS-mus) (Info)
Species: bipinnatus (by-pin-NAY-tus) (Info)
Cultivar: Summer Dreams

5 members have or want this plant for trade.


24-36 in. (60-90 cm)

9-12 in. (22-30 cm)

Not Applicable

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:
Magenta (Pink-Purple)
White/Near White

Bloom Time:
Mid Summer
Late Summer/Early Fall


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping
Average Water Needs; Water regularly; do not overwater
Self-sows freely; deadhead if you do not want volunteer seedlings next season
Flowers are good for cutting
Suitable for growing in containers

Soil pH requirements:
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; sow indoors before last frost
From seed; direct sow after last frost

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
Properly cleaned, seed can be successfully stored

Click thumbnail
to view:

By amethystsm
Thumbnail #1 of Cosmos bipinnatus by amethystsm

By amethystsm
Thumbnail #2 of Cosmos bipinnatus by amethystsm


No positives
1 neutral
No negatives

Gardeners' Notes:

Neutral queenofquiet On Aug 4, 2012, queenofquiet from Fairbanks, AK wrote:

I love Cosmos and am always on the hunt for the varieties that actually have enough time to bloom in our short Fairbanks, Alaska growing season. 'Sensation' or the airy orange variety, 'Bright Lights' are hit or miss depending on your local spot and the type of hotter or cooler summer; weather; 'Picotee' is fabulous for it's quicker blooming time and beautiful variety of pinks and magentas, the same with 'Seashells' variety.
This spring I found Burpee's 'Summer Dreams' in a local store, packet advertised, "Papery white petals brushed with hot pink on early blooming plants". Well it is the first week of August and they are just starting to bud and bloom, so they have taken longer than their 'early blooming, 60-65 day' label and they are white, flat white. I am not seeing any hint of pink anywhere. Only three have opened so I am hoping for some color like the lovely light pink petals/hot pink center like the photograph on the front packet.
The hunt continues...


This plant has been said to grow in the following regions:

Bessemer, Alabama
College, Alaska
New Haven, Connecticut
Homestead, Florida
Marlborough, Massachusetts
Worcester, Massachusetts
Holts Summit, Missouri
Bethlehem, Pennsylvania
Kalama, Washington

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