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Stromanthe

Stromanthe thalia (stroh-MAN-thee THAH-lee-ah)

Family: Marantaceae Unknown Herbaceous (3-15 ft)

Stromanthe is a tender evergreen herbaceous perennial that is native to the rainforests of Brazil. It prefers high humidity and warm temperatures. The plant has beautiful foliage that is up to 20 inches long, elliptical to oblong, glossy, dark green on the upper surface, and burgundy on the undersides. At night the leaves fold together to resemble praying hands. In the spring, panicles of tiny white flowers with orangish-red sepals and red bracts appear. The plant grows up to 5 feet tall and 3 feet wide when grown outdoors, but as a houseplant, it is usually only 2 to 3 feet tall. The genus name Stromanthe originates from two Greek words, stroma and anthos . Stroma means "bed," and anthos means "a flower." This refers to the flower inflorescence. The specific epithet, thalia , is Greek for "to blossom" or "blooming." The plant is hardy in USDA Zones 10 to 12, but it is typically grown as a houseplant or annual in the United States. It prefers partial to dappled shade and moist, well-drained soils. Direct sun can scorch the leaves, and it is intolerant of dry soils. The plant thrives in high humidity. Consider using a humidifier or setting the plant's container on a bed of moist pebbles to increase the interior humidity. Propagation by division is best done in the spring before the new growth starts. 'Triostar' is a popular variegated cultivar of this species with olive-green leaves variegated with white, cream, and pink. You will find it commercially under several different names, including 'Tristar,' 'Tricolor,' and 'Triostar.' The eye-catching plant is a member of the Marantaceae or prayer plant family. Consider this tropical plant for a shaded patio or an area of your home with indirect sunlight so you can enjoy the colorful foliage year-round. rhizomatous, herbaceous perennial, erect, clumping habit, 3 to 5 feet tall, and 2 to 3 feet wide branching stems elliptical to oblong leaves up to 20 inches long, 6 inches wide, dark green, undersides red with entire margins panicles of tiny white flowers with orangish-red sepals and red bracts Insects, Diseases, and Other Plant Problems: Monitor for mealybugs, aphids, and spider mites. Root and stem rot can occur from overwatering.

Source: NC State Extension Gardener Plant Toolbox ↗ NC State Extension Gardener Plant Toolbox, 44 attributes.

How it fits the guild

Guild layer 4 - Herbaceous (3-15 ft) Optimal soil pH Neutral (6.0-8.0)
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.

Often confused with Ctenanthe oppenheimiana
Fills a similar niche Alocasia x mortfontanensis Chlorophytum orchidastrum Ledebouria socialis

Full plant profile

Growing Conditions
Plant type
Annual; Herbaceous Perennial; Houseplant
Life cycle
Perennial
USDA zones
10a, 10b, 11a, 11b, 12a, 12b
Light
Dappled Sunlight (Shade through upper canopy all day) | Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Soil texture
High Organic Matter
Soil pH
Neutral (6.0-8.0)
Soil drainage
Good Drainage | Moist
Available space
3 feet-6 feet
Mature size
Height: 3 ft. 0 in. - 5 ft. 0 in. | Width: 2 ft. 0 in. - 3 ft. 0 in.
Maintenance
Low
Canopy layer
4 - Herbaceous (3-15 ft)
Form & Appearance
Habit / form
Clumping; Erect
Leaf color
Green
Leaf type
Simple
Leaf shape
Elliptical; Oblong
Leaf margin
Entire
Leaf feel
Glossy
Leaf size
> 6 inches long, 3-6 inches wide
Hairs present
No
Leaf detail
The leaves are oblong or elliptical, glossy, dark green on the upper surface, burgundy underneath, and have entire margins. They can measure 6 to 12 inches long and even up to 20 inches long and 6 inches wide. They have long petioles, and the leaves fold up at night.
Flower color
Orange; Red/Burgundy; White
Flower value
Showy
Flower form
Panicle
Flower size
< 1 inch
Flower detail
Blooming in the spring, the flowers are tiny white with orangish-red sepals and red bracts. Flowers are rarely seen in houseplants, but they have been seen in plants that are grown in greenhouses. The flowers measure 0.5 inches long, and the panicles are 2 to 3 inches in width.
Bloom time
Spring
Stem detail
Branching stems that may grow up to 5 feet tall.
Wildlife & Ecology
Native status
Unknown
Origin
Brazil
Distribution
Brazil Northeast, Brazil South, and Brazil Southeast
Play value
Attractive Flowers; Colorful
Landscape Use
Landscape location
Container; Houseplants; Patio
Garden tags
#clumping #houseplant #herbaceous perennial #dappled shade #low maintenance #interesting flowers #humidity tolerant #annual #interesting leaves #container plant #drought intolerant #pet friendly #partial shade tolerant
Problems & Resistance
Propagation
Division

Planted at Hunnicutt

Nobody’s planted this one yet.