Calathea

Calathea key facts

Growing Difficulty

Intermediate

Lifespan

5+ years

Size

30-80cm

Temperature

15〜28℃

Humidity

50〜80%

Placement

Bright shade. Direct sun causes leaf burn

Watering

Keep the soil slightly moist at all times. Leaves curl and tips brown when dry, and use rested or filtered water instead of straight tap water.

Temperature & Overwintering

Ideal range is 15-28°C and it is cold-sensitive. In winter keep it in a room that stays above 15°C, away from direct heater air.

Soil & Repotting

Use a mix that balances drainage and moisture retention. It likes high humidity (50-70%), so mist often to keep the air moist.

Notes

Leaf tips dry easily. Avoid dry air and chlorinated water

About Calathea

Calathea is a perennial plant native to the tropical rainforests of tropical America (Central and South America), and belongs to the family Marantaceae. Its name derives from the Greek word for "basket," reflecting the plant's long history of having its leaves used in weaving. The defining appeal of Calathea lies in its strikingly patterned foliage — geometric and painterly combinations of green, white, deep purple, and cream that vary dramatically across the many cultivated varieties. Many varieties also feature purple undersides, adding a layered visual effect that shifts with the angle of light. The plant's nyctinastic movement — folding its leaves upward in the evening and reopening them by morning — gives it a lively, almost animated personality unlike most houseplants. While Calathea does require higher humidity, indirect light, and careful watering, making it more suitable for attentive growers, the reward is the daily pleasure of observing subtle changes in its living, breathing leaves. It is a distinctive houseplant that blends decorative beauty with a tangible sense of vitality.

7 things to know before growing Calathea

1. 1Avoid Direct Sunlight

   Direct sunlight causes leaf scorch and fades Calathea's distinctive patterns. A bright spot away from direct sun — such as near a window with a sheer curtain — works best. East- or north-facing windowsills provide suitable light conditions.

2. 2High Humidity Is Essential

   Calathea thrives in humidity around 50–70%; dry air causes the leaf tips to brown and crisp. Placing it near a humidifier or setting the pot on a tray of moist gravel helps maintain moisture levels. Misting the leaves frequently can also help, but avoid leaving standing water on the foliage.

3. 3Water Quality Matters

   Calathea can be sensitive to fluoride and chlorine in tap water, which may cause leaf tip damage over time. Using water left overnight to off-gas, filtered water, rainwater, or soft water helps keep the foliage healthy.

4. 4Don't Let Soil Dry Out

   The basic rule is to keep the soil lightly moist at all times; if it dries out, the leaves curl and the tips turn brown. To prevent root rot, though, make sure water does not collect at the bottom of the pot: use a well-draining potting mix and a pot with drainage holes. In winter, adjust watering according to how quickly the soil dries.

5. 5Enjoy the Nyctinasty

   Calathea raises and closes its leaves at night, reopening them in the morning — a phenomenon called nyctinasty. This movement is a sign of a healthy plant and can also serve as an indicator of its light and moisture conditions. If the leaves stay closed during the day, consider adjusting its placement or watering routine.

6. 6Fertilize Lightly in Growing Season

   During the growing season from spring to summer, apply a diluted liquid fertilizer at half the recommended strength once or twice a month. Over-fertilizing can damage roots and foliage, so err on the side of less. Withhold fertilizer during the dormant period in autumn and winter.

7. 7Repot Every Two Years

   When roots begin to emerge from the drainage holes or water drains poorly, it is time to repot. Move to a pot one size larger in spring, handling the roots gently to minimize stress. After repotting, keep the plant out of direct sun for a few days while it adjusts to its new container.

Frequently asked questions about Calathea

Q.Why are the tips of my Calathea's leaves turning brown?

A.The most common cause is low humidity. Using a humidifier or misting the leaves regularly often resolves the issue. Chlorine in tap water or over-fertilizing can also contribute to browning tips.

Q.How often should I water my Calathea?

A.The basic rule is to keep the soil lightly moist at all times. Water thoroughly, until it drains from the bottom, before the top of the soil dries out completely. The frequency varies with season and room temperature, so adjust by checking the soil rather than following a fixed schedule.

Q.Can Calathea grow in a room with low light?

A.Calathea prefers indirect light and avoids harsh sun, so it adapts reasonably well to lower-light rooms. However, insufficient light may cause the leaf patterns to fade and slow overall growth.

Q.My Calathea's leaves stopped moving at night. Is something wrong?

A.When the sleep movement stops, it often signals insufficient light, a root-bound pot, or overall stress. Try adjusting the plant's position to improve light exposure, and consider repotting or fertilizing if needed.

Q.How should I care for Calathea in winter?

A.Calathea is sensitive to cold, so keep it indoors where the temperature stays at 15°C or above in winter. Avoid direct drafts from heaters and maintain humidity to prevent dryness. Since growth slows in winter, adjust watering according to how dry the soil is and go easy on fertilizer.

Handy Growing Tools for Calathea

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