Calathea Care Guide: Varieties and Secrets to Lush Foliage
Why Calathea Is the Queen of Houseplants
Calathea captivates plant lovers with the extraordinary patterns on its leaves: geometric stripes, splashes, gradients running from deep green to burgundy. In the wild it grows on the forest floor of South American tropical rainforests, and that origin dictates every rule of home care.
The most fascinating feature of calathea is that its leaves are truly alive. In the evening they rise upward; in the morning they unfold again. If you hear a faint rustling — that is perfectly normal, the plant is moving. This behaviour has earned it the common name "prayer plant".
Light and Placement
Calathea cannot tolerate direct sunlight — the leaves bleach out and lose their markings. The best spots are:
- A north- or east-facing window
- 1 to 2 metres back from a south-facing window
- Diffused light filtered through a sheer curtain
During Tashkent's short winter days you can move calathea closer to the window or supplement with a grow light for 10 to 12 hours.
Temperature — Keep It Steady
Calathea craves stability. The ideal temperature range is 20 to 25 °C. Sudden swings, draughts and a cold windowsill in winter are its worst enemies. If the sill is chilly, place a small polystyrene pad under the pot for insulation.
Watering Calathea: The Key Secret
Calathea is fussy about water quality. Hard tap water causes white mineral deposits on the leaves and raises the soil's pH over time.
Watering rules:
- Use room-temperature water that has been left to stand for at least 24 hours
- In summer, water 2 to 3 times a week; in winter, every 5 to 7 days
- The soil should be moist but never waterlogged — standing water is fatal
- Drain any excess from the saucer 15 minutes after watering
Humidity
This is the make-or-break factor. Calathea needs 60 to 80 % humidity. In Tashkent the air is dry in summer, while radiators can push winter humidity down to 20 to 30 % — a real challenge.
What to do:
- Mist the leaves once or twice a day with a fine spray
- Stand the pot on a tray of damp expanded clay
- Run a humidifier nearby (the most reliable method)
Why Calathea Leaves Curl
Curling leaves are a distress signal. The four main causes:
- Dry air — the single most common issue, especially in winter
- Under-watering — check soil moisture at a depth of 2 to 3 cm
- Direct sun — the leaves curl inward to protect themselves from scorching
- Cold draughts — move the plant away from open windows
If the leaf tips are drying out and turning brown, that is also a response to low humidity. Trim the damaged sections at an angle with sharp scissors and increase moisture levels.
Repotting and Soil
Repot calathea every 1 to 2 years in spring. The soil should be loose and slightly acidic (pH 5.5 to 6.5):
- Universal potting soil — 2 parts
- Perlite or vermiculite — 1 part
- Peat — 1 part
Choose a pot 2 to 3 cm larger than the previous one, and make sure it has drainage holes.
Popular Varieties for the Home
- Calathea Ornata — dark green leaves with striking pink pinstripes
- Calathea Medallion — rounded leaves with a bold, contrasting pattern
- Calathea Rufibarba — velvety leaves without a prominent pattern
- Calathea Makoyana — semi-translucent leaves with a dappled design
If you are interested in other low-maintenance tropical plants, read our guide on alocasia care — it looks stunning paired with a calathea.