Cosmos, Common Cosmos, Mexican Aster 'Cosmic Orange'

Cosmossulphureus

Family
Asteraceae (ass-ter-AY-see-ee)
Genus
Cosmos (KOS-mus)
Species
sulphureus (sul-FER-ee-us)
Synonym
Sun Exposure
Full Sun
Foliage
Herbaceous
Height
12-18 in. (30-45 cm)
Spacing
9-12 in. (22-30 cm)
Hardiness
Not Applicable
Danger
Parts of plant are poisonous if ingested
Bloom Color
Orange
Bloom Time
Blooms all year
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
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)
Patent Information
Propagation Methods
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
Direct sow as soon as the ground can be worked
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
Allow seedheads to dry on plants; remove and collect seeds
Regional

This plant is said to grow outdoors in the following regions:

Calistoga, California

Richmond, California

Stockton, California

Clifton, Colorado

Dunnellon, Florida

Union, Kentucky

Massillon, Ohio

Summerville, South Carolina

Bryan, Texas

San Antonio, Texas

show all

Featured Videos

Gardener's Notes:

2
positives
0
neutral
0
negative
Sort By:
Sort By:
R
R
Bryan, TX | May 2017 | positive

Planted the seeds on Sunday. It is only Thursday, and the plants are already coming up from the seed. I have the seen these flowers a...Read More

I
Denver, CO | August 2005 | positive

The best plant to spoil a pastel cottage garden.

It is the brightest orange in the plant world. (That I've seen) Those tha...Read More

Featured
Water Willow moth
(Tripudia flavofasciata )
Purple Swamphen
(Porphyrio porphyrio)
Featured
Water Willow moth
(Tripudia flavofasciata )
Purple Swamphen
(Porphyrio porphyrio)