Cosmos, Common Cosmos, Mexican Aster 'Sensation Mix'

Cosmosbipinnatus

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Cosmos (KOS-mus)
Species
bipinnatus (by-pin-NAY-tus)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
Spacing
12-15 in. (30-38 cm)
Hardiness
Not Applicable
Danger
Parts of plant are poisonous if ingested
Bloom Color
Pink
Fuchsia (red-purple)
White/Near White
Bloom Time
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Blooms repeatedly
Other Details
Category
Annuals
Water Requirements
Drought-tolerant; suitable for xeriscaping
Foliage Color
Where to Grow
Bloom Characteristics
This plant is attractive to bees, butterflies and/or birds
Bloom Size
Other details
Soil pH requirements
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
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
Regional

This plant is said to grow outdoors 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

Madison, Mississippi

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

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Gardener's Notes:

4
positives
1
neutral
0
negative
Sort By:
Sort By:
O
Enid, OK (Zone 7a) | September 2014 | positive

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.

D
(Daniel) Mount Orab, OH (Zone 6b) | February 2009 | positive

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'...Read More

B
Braselton, GA (Zone 8a) | March 2007 | neutral

I AAS winner in 1936. One of the earliest blooming cosmos- great for Northern gardeners. Grows well in light, dry soils. This half-hardy...Read More

M
M
Rehoboth, MA (Zone 5a) | March 2005 | positive

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 it...Read More

N
Sparks, NV (Zone 7a) | March 2005 | positive

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

Featured
Locust Borer
(Megacyllene robiniae)
Rock Dove
(Columba livia)
Featured
Locust Borer
(Megacyllene robiniae)
Rock Dove
(Columba livia)