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Joseph's Coat

Alternanthera dentata (al-ter-NAN-ther-a den-TAY-ta)

Family: Amaranthaceae Unknown Herbaceous (1-3 ft)

Joseph's coat is a tropical perennial typically grown as an annual in the Amaranthaceae (buckwheat) family native to the West Indies and South America. The genus name comes from the Latin words alternans meaning alternating and anthera meaning anther. Alternate anthers in the genus are barren. Specific epithet dentata means toothed referring to the toothed leaves. The common name Joseph's coat is a biblical reference to Joephis many colored coat because of the striking leaves on this plant. Plant in rich, consistently moist, and well-drained soil and this plant will reach 6 to 12 inches high. The best leaf color appears when in full sun. It has a spreaching habit so pinch stem ends to promote more compact growth. This plant is showy from spring until the first frost. It is known for its bright colorful foliage that ranges from burgundy, white, pink, to chartreuse, or purple. Excellent choice for containers on a patio, in the front of an annual border or bedding plants in a cottage garden. Insects, Diseases, and Other Plant Problems: No serious problems.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 37 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (1-3 ft)
See companions & conflicts ↓

Companions & Conflicts

Curated pairwise relationships between this plant and others in the library — who feeds whom, who competes, who confuses the pests. Green reads as a good pairing, red as one to avoid.

No curated interactions recorded for this species yet.

Also noted by NC State

Related species the NC State Plant Toolbox flags for this plant — look-alikes to tell apart, and plants that play a similar role in a planting. Ones we carry in the library are linked.

Fills a similar niche Dianthus Dianthus chinensis x barbatus Ocimum basilicum

Full plant profile

Growing Conditions
Plant type
Annual; Perennial
Life cycle
Annual; Perennial
USDA zones
10a, 10b, 11a, 11b
Light
Full sun (6 or more hours of direct sunlight a day)
Soil drainage
Good Drainage
Available space
12 inches-3 feet
Mature size
Height: 0 ft. 6 in. - 1 ft. 0 in. | Width: 1 ft. 0 in. - 2 ft. 0 in.
Growth rate
Rapid
Canopy layer
4 - Herbaceous (1-3 ft)
Form & Appearance
Habit / form
Spreading
Leaf color
Purple/Lavender
Leaf type
Simple
Leaf arrangement
Opposite
Leaf shape
Lanceolate; Linear; Ovate
Leaf margin
Dentate
Leaf value
Showy
Hairs present
Yes
Leaf detail
Purple to burgandy leaves in a linear-lanceolate to ovate shape. Boldest color comes in full sun.
Flower color
Green; Insignificant; White
Flower detail
Flower's color are white to greenish.
Bloom time
Summer
Fruit type
Achene
Fruit detail
Fruit type is technically a utricle, a type of achene.
Stem color
Purple/Lavender
Wildlife & Ecology
Native status
Unknown
Origin
West Indies and Brazil
Food & Medicine
Fruit type
Achene
Landscape Use
Landscape location
Container; Patio; Small Space
Landscape theme
Cottage Garden
Design feature
Border
Garden tags
#showy leaves #moist soil #purple #purple leaves #tropical herbaceous perennial #green flowers #white flowers #full sun tolerant #burgundy leaves #bushy #burgundy #well-drained soil #tropical feel #partial shade tolerant #border front #container plant #cottage garden #small spaces #drought tolerant annual #annual #patio

Planted at Hunnicutt

Nobody’s planted this one yet.