Triostar stromanthe Stromanthe thalia
Triostar stromanthe (Stromanthe thalia) is an evergreen perennial flowering plant in the Marantaceae family, native to Atlantic forest of south-eastern Brazil. It grows 60 cm–1.2 m (24 in–3.9 ft) tall and 50–80 cm (20–31 in) wide, wants part sun to part shade and high water, and is hardy to about 12 °C (54 °F). Space plants about 50 cm (20 in) apart.
Plan Triostar stromanthe in your garden →
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Triostar stromanthe at a glance
| Type | Perennial flowering plant, evergreen |
|---|---|
| Family | Marantaceae |
| Mature height | 60 cm–1.2 m (24 in–3.9 ft) |
| Mature spread | 50–80 cm (20–31 in) |
| Spacing | 50 cm (20 in) centre to centre |
| Sun | Part sun to part shade, at least 2 h of direct sun a day |
| Water | High; drought tolerance none, waterlogging tolerance none |
| Soil pH | 5.5–6.5 |
| Cold hardiness | About 12 °C (54 °F) once established (roughly USDA zone 12) |
| Heat stress | Likely above about 32 °C (90 °F) |
| Flowering | about 104–209 weeks after planting, for 4–7 weeks |
| Wind tolerance | None |
| Pollinator value | Low |
| Edible | Not grown as food |
| Native to | Atlantic forest of south-eastern Brazil |
| Common in gardens of | 🇧🇷 Brazil, 🇺🇸 United States, 🇬🇧 United Kingdom, 🇩🇪 Germany, 🇳🇱 Netherlands, 🇦🇺 Australia |
Is Triostar stromanthe toxic?
- People: not known to be toxic
- Cats: not known to be toxic
- Dogs: not known to be toxic
Not poisonous to cats or dogs.
If a child or pet may have eaten part of a plant, call a poison centre or vet straight away.
Companion planting: what to grow with Triostar stromanthe
No well-documented helpful pairing. Group it with plants that like part sun to part shade and high water.
Questions about Triostar stromanthe
- How far apart should I plant Triostar stromanthe?
- About 50 cm (20 in) apart, centre to centre. A mature plant spreads 50–80 cm (20–31 in).
- Does Triostar stromanthe need full sun?
- Part sun to part shade: at least 2 hours of direct sun a day.
- How much water does Triostar stromanthe need?
- High water. Drought tolerance is none and waterlogging tolerance none.
- How cold-hardy is Triostar stromanthe?
- It tolerates about 12 °C (54 °F) once established, roughly USDA zone 12.
- When does Triostar stromanthe flower?
- About 104–209 weeks after planting, for 4–7 weeks.
- Is Triostar stromanthe poisonous to cats and dogs?
- For cats it is not known to be toxic; for dogs not known to be toxic; for people not known to be toxic. Not poisonous to cats or dogs.
- What grows well with Triostar stromanthe?
- There is no well-documented companion pairing for Triostar stromanthe. Group it with plants that like the same sun (part sun to part shade) and water (high).
Sources and evidence
Evidence grade A (A: strong evidence).
- Plants of the World Online (taxonomy, native range), Royal Botanic Gardens, Kew
- Missouri Botanical Garden Plant Finder, Missouri Botanical Garden
Notes and assumptions
- A tropical plant: outdoors only in frost-free, humid climates; elsewhere a houseplant for bright, indirect light that likes warmth and humidity and hates cold draughts.
- Long leaves variegated green, cream and pink above and deep magenta beneath, raised at night like hands in prayer. ‘Triostar’ is the popular variegated form; it was long sold as Stromanthe sanguinea.
Reference values for planning, not horticultural, veterinary or medical advice. Varieties, soils and local climates differ: check with a local nursery or extension service.
Related plants
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- Arrowroot (West Indian arrowroot) Maranta arundinacea
- Round-leaf calathea Goeppertia orbifolia
- Fishbone prayer plant (Burle Marx ctenanthe) Ctenanthe burle-marxii
- Prayer plant (herringbone plant) Maranta leuconeura
- Rattlesnake plant Goeppertia insignis
- Sunflower Helianthus annuus
- French marigold Tagetes patula