Common Cosmos, Mexican Aster 'Sensation Mix'

Cosmos bipinnatus

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



Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Where to Grow:

Unknown - Tell us


18-24 in. (45-60 cm)

24-36 in. (60-90 cm)


12-15 in. (30-38 cm)


Not Applicable

Sun Exposure:

Full Sun


Parts of plant are poisonous if ingested

Bloom Color:


Fuchsia (Red-Purple)

White/Near White

Bloom Time:

Late Spring/Early Summer

Mid Summer

Late Summer/Early Fall

Blooms repeatedly



Other details:

Unknown - Tell us

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

Self-sows freely; deadhead if you do not want volunteer seedlings next season

Seed Collecting:

Collect seedhead/pod when flowers fade; allow to dry


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

Lake Forest, California

Sacramento, California

Camden Wyoming, Delaware

Bloomington, Indiana

Prospect, Kentucky

Foxboro, Massachusetts

Rehoboth, Massachusetts

Uxbridge, Massachusetts

Bellaire, Michigan

New Baltimore, Michigan

Mathiston, Mississippi

Blair, Nebraska

Sparks, Nevada

Livingston, New Jersey

Mullica Hill, New Jersey

Hornell, New York

Putnam Valley, New York

Mars Hill, North Carolina

Mount Orab, Ohio

Enid, Oklahoma

Oklahoma City, Oklahoma

Harrisburg, Pennsylvania

Mountain Top, Pennsylvania

Campobello, South Carolina

Greenville, South Carolina

Dallas, Texas

Fort Worth, Texas

Fulton, Texas

San Antonio, Texas

Leesburg, Virginia

Kalama, Washington

Spokane, Washington

show all

Gardeners' Notes:


On Sep 7, 2014, outdoorlover from Enid, OK (Zone 7a) wrote:

I love these beautiful flowers! They grow very well in zone 7. This is the 3rd year I have collected its seeds and replanted them.


On Feb 2, 2009, DMgardener from (Daniel) Mount Orab, OH (Zone 6b) wrote:

Quite beautiful in any garden, Cosmos are part of several of my color and shape schemes. They regulary get to 5' high and a few times 8' high. The seedheads are very attractive to American Goldfinches.


On Mar 4, 2007, berrygirl from Braselton, GA (Zone 7b) wrote:

I AAS winner in 1936. One of the earliest blooming cosmos- great for Northern gardeners. Grows well in light, dry soils. This half-hardy annual reaches 4-5 ft tall.


On Mar 25, 2005, Maria from Rehoboth, MA (Zone 5a) wrote:

In my garden this plant grows to 7 feet tall with robust stems but need support from high winds. self seeds but these will not repeat its hight as before.


On Mar 24, 2005, nevadagdn from Sparks, NV (Zone 7a) wrote:

This plant reseeds copiously. Small birds like to snack on the seeds, too.