Plant guide
ストロマンテ
Watering rhythm
Every 3–5 days
Stromanthe is a foliage plant from the Araliaceae family, native to Brazil. It's prized for its deep green leaves with striking reddish undersides. One of its most charming features is its nyctinastic movement—the leaves shift their angle throughout the day and night. With a bit of attentive care and consistent humidity, this plant will reward you with lasting beauty.
Bright, indirect light is ideal. Avoid direct sunlight. Keep temperatures between 18–25°C (64–77°F), and try not to let them drop below 10°C (50°F). Stromanthe loves humidity, so misting the leaves regularly will help it thrive.
Light and temperature change a plant's metabolism, so the ideal cadence shifts with the seasons.
Spring
Every 3–4 days
Summer
Every 3–4 days
Autumn
Every 4–5 days
Winter
Every 6–8 days
Water when the top of the soil feels dry to the touch. Stromanthe doesn't like sitting in moisture, so be careful not to overwater. A good approach is to check the soil with your finger and add water before it dries out completely—less is often more. During winter, reduce watering frequency.
Quick lookup from symptom to likely cause and action.
| Symptom | Likely cause | What to try |
|---|---|---|
| Leaves turning brown | The air is too dry, or the plant isn't getting enough water consistently. | Mist the leaves daily and check soil moisture regularly. A humidifier can also make a real difference. |
| Root rot | The soil stays too wet from overwatering, or your potting mix doesn't drain well enough. | Repot the plant right away, removing any rotted roots. Choose a pot with drainage holes and fresh, well-draining soil, then be more conservative with watering. |
| Leaves dropping | The temperature is too cold, or cold drafts are hitting the plant. Sudden environmental shifts can also trigger this. | Move it to a warm, stable spot. Keep the temperature above 15°C (59°F) and shield it from cold air, AC vents, and drafts. |
| Spider mites appearing | The air is too dry and humidity is low. | Mist the leaves, including the undersides, to discourage mite populations. For serious infestations, gently wipe the leaves with diluted soapy water. |
| Leaves turning yellow | Not enough light, or the plant is nutrient-starved. | Move it to a brighter location. Feed it with diluted liquid fertilizer once or twice a month during spring and summer. |
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