Grow Triostar Stromanthe (*Stromanthe sanguinea* ‘Triostar’) in bright, indirect light, with consistently moist but well-drained potting mix and high humidity. Check the soil before watering rather than following a fixed weekly schedule: the plant needs moisture, but should not sit in waterlogged compost.
What is Triostar Stromanthe?
*Stromanthe sanguinea* ‘Triostar’ is an upright evergreen perennial commonly grown as a houseplant. It has variegated foliage in shades of green, cream and pink, with vivid pink or reddish undersides; its leaves close at night. It is also sold under names such as Calathea ‘Triostar’ and *Stromanthe sanguinea* ‘Tricolour’. The Royal Horticultural Society (RHS) lists those as alternate names for the plant.
Size estimates vary by source. The RHS gives a maximum height and spread of 0.5–1 metre, with maturity in two to five years. The University of Florida IFAS Extension (UF/IFAS) estimates two to three feet tall and one to two feet wide at maturity. Treat these as approximate, source-specific estimates rather than guaranteed dimensions.
Where should you place it?
Indoors: bright, filtered light
Choose a bright spot away from direct sun. The RHS recommends bright, filtered light, and UF/IFAS and a Home Depot-hosted care sheet also warn that strong direct sunlight can burn or damage the leaves. A position with filtered daylight is preferable to a sunny windowsill where the foliage receives direct rays.
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- Triostar stromanthe (Stromanthe sanguinea) is a tropical leafy pet friendly and it purifying plant.
- Moderate, and indirect sunlight
- Water: Every 1-2 weeks when soil is almost dry out half way down
- Climate: 65 and 70 °F
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Outdoors: account for climate
UF/IFAS recommends shade for outdoor planting and notes that North Florida growers can treat the plant as an annual. That regional advice should not be applied to other climates. The RHS lists partial shade and east- or north-facing aspects in its UK growing guidance; it does not establish that the plant is hardy outdoors everywhere.
How should you water Triostar Stromanthe?
Keep the potting medium moist but well-drained. Water freely while the plant is actively growing and more moderately in winter, as the RHS advises. UF/IFAS recommends regular watering while allowing the soil to dry between waterings. A Home Depot-hosted care sheet offers a practical cue: let the top inch of soil dry before watering again.
Rank #2
- Stromanthe Triostar House Plant: This vibrant and colorful houseplant adds a splash of color to your living room decor, office decor, or garden decor. Perfect as an indoor plant, it can liven up any space.
Use those cues to assess the medium, not as a universal timetable. How quickly it dries depends on the plant’s conditions, and the sources do not establish a fixed watering frequency. Avoid both letting the compost stay dry for long periods and leaving the roots in waterlogged mix.
How much humidity and warmth does it need?
High humidity is a consistent recommendation from the RHS and UF/IFAS. UF/IFAS suggests misting or keeping the plant in a humid room such as a bathroom. The cited guidance does not set a numeric humidity target, so there is no evidence-based percentage to promise as a universal requirement.
Rank #3
- Live Stromanthe Plant 6-Inch – Stunning tropical houseplant with striking variegated leaves in shades of green, cream, and vibrant pink
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- Thrives in Indirect Light – Prefers bright, indirect light and high humidity; keep soil consistently moist but not soggy for healthy growth
- Pet-Friendly & Low Maintenance – Non-toxic to pets and easy to care for, making it great for plant lovers and pet owners alike
- Ideal for Indoor Jungle Vibes – A unique and colorful addition to any houseplant collection, perfect for gifting or elevating your plant corner
A Home Depot-hosted care sheet gives a preferred temperature range of 60–80°F and warns that extreme cold or frost can damage foliage. This is retailer-hosted guidance, not a temperature range stated in the RHS or UF/IFAS profiles.
What potting mix and fertilizer should you use?
Potting medium
The RHS recommends peat-free potting compost and describes the desired conditions as moist but well-drained. Prioritize a medium and pot setup that retain enough moisture without becoming waterlogged. The available guidance does not specify a required ingredient recipe, pot size or repotting interval.
Rank #4
- Colorful house plant
- Prefers bright, indirect light
- Keep evenly moist, not wet or dry
- Trim as needed
- Garden & Patio
Feeding
Fertilizer advice differs between the cited sources. The RHS recommends low-nitrogen liquid fertilizer every two or three weeks. The Home Depot-hosted care sheet instead suggests half-strength, general-purpose water-soluble fertilizer monthly from spring through fall. These are separate source recommendations, not a single established schedule; follow the directions for the fertilizer you use and avoid combining the frequencies.
How do you propagate, prune and monitor the plant?
Propagation
The RHS recommends dividing the plant in spring. No more detailed division procedure was established in the cited guidance.
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Pruning and pests
The RHS says pruning is not required and notes possible susceptibility to glasshouse red spider mite. The cited material does not provide a treatment protocol, so inspect the foliage and seek plant-specific advice if you identify a pest.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What if the leaf tips turn brown?
Brown tips are a common concern, but the cited authoritative profiles do not establish a definitive cause or a verified treatment. Check whether the plant is receiving direct sun, whether the medium is drying out or staying waterlogged, and whether it is in a humid location; these are relevant care conditions, not a diagnosis. Make adjustments based on what you observe rather than assuming one cause.
Quick Recap
Sources
- Royal Horticultural Society: Stromanthe sanguinea ‘Triostar’
- University of Florida IFAS Extension: Stromanthe
- Home Depot-hosted Stromanthe Triostar care sheet
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