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The Triostar Stromanthe (Stromanthe sanguinea 'Triostar') is a stunning unique houseplant known for its vibrant, colourful variegated leaves. The foliage features shades of green, cream, and pink on top, with a striking deep purple underside that adds a touch of drama to any indoor space. As part of the Marantaceae family, the Triostar is a relative of the calathea and prayer plant, sharing their preference for humidity and a bit of pampering. Here’s how to care for this tropical beauty to keep it thriving.
Triostar Stromanthe thrives in bright, indirect light, which helps maintain its vibrant coloration. Place it near an east or north-facing window where it receives filtered sunlight. Avoid direct sunlight, as it can scorch the delicate leaves and fade their colors. If your plant is not receiving enough light, its growth may slow, and the variegation may fade.
The Stromanthe Triostar prefers moist soil but is sensitive to overwatering. Water when the top inch of soil feels dry, ensuring you do not let it sit in waterlogged soil. Always use a pot with drainage holes to prevent root rot. During the growing season (spring and summer), water more frequently, but reduce watering during the fall and winter when growth slows and your plant enters dormancy. When watering into a pot without drainage holes, be sure to discard any excess water to prevent root rot or pests.
This tropical plant thrives in warm, humid conditions. Keep the temperature between 65–80°F (18–27°C) and avoid exposing it to cold drafts or temperatures below 60°F (15°C). Triostar Stromanthe loves high humidity, so aim for levels above 50%. Increase humidity by misting your plants leaves, using a humidifier, or placing the plant on a pebble tray filled with water. Grouping it with other plants can also help maintain humidity.
Use a well-draining, nutrient-rich potting mix to provide the Triostar with the perfect environment. A mix designed for houseplants or a blend of potting soil, perlite, and peat moss works well. Repot your plant every 1 to 2 years or when it outgrows its pot, typically in the spring. Choose a pot with drainage holes to ensure proper water flow.
During the growing season, feed your Triostar Stromanthe with a balanced, water-soluble fertilizer every 4–6 weeks. Dilute the fertilizer to half strength to avoid over-fertilizing, which can damage the roots or cause leaf browning. Hold off on fertilizing during the winter when the plant’s growth slows down.
Regular maintenance helps keep your Triostar looking its best. Trim away any yellowing, browning, or damaged leaves with clean, sharp scissors to encourage healthy growth. Dust the leaves occasionally with a damp cloth to keep them clean and allow for better photosynthesis.
Triostar Stromanthe can be propagated through division during repotting. Carefully remove the plant from its pot and separate it into smaller sections, ensuring each section has roots and a few healthy leaves. Replant each division in fresh soil, water thoroughly, and provide a humid environment to help it acclimate.
The Triostar Stromanthe is considered non-toxic to pets according to the ASPCA. However, it’s always best to keep plants out of reach of curious pets to prevent accidental damage to the plant or stomach upset if ingested in large quantities.