Calathea care guide
Calathea Care Guide
Calatheas are the most demanding plants in this guide. They want bright indirect light without sun, consistently moist soil, and humidity above 55%. The reward is some of the most patterned leaves in the houseplant trade: stripes, fishbones, peacock eyes. The leaves fold upward at night (a circadian behaviour called nyctinasty), which is how the family got its 'prayer plant' nickname.
Quick answer: Every 4-7 days; keep the soil lightly moist at all times in Medium indirect; avoid direct sun (fades the leaf pattern). Use the watering estimator below to tune the interval to your pot and conditions.
Quick facts
Light, water, soil, temperature, humidity
- Light
- Medium indirect; avoid direct sun (fades the leaf pattern)
- Water
- Every 4-7 days; keep the soil lightly moist at all times
- Soil
- Peat-based or coco-coir mix that retains moisture but drains
- Temperature
- 18-24°C (65-75°F); sensitive to cold drafts and below 15°C
- Humidity
- 55-70% — the single most important factor for healthy leaves
- Growth habit
- Clumping rosette; spreads slowly from rhizomes
- Mature size
- 40-80 cm (16-32 in)
- Pet toxicity
- Non-toxic to cats and dogs
Tool 1 · Watering estimator
How often should I water this calathea?
Tool 2 · Troubleshooting
What's wrong with my calathea?
Pick the symptom you're seeing. The decision tree below walks through diagnostic questions and lands on a specific cause and remedy.
Tool 3 · Printable
Care card
A one-page printable care card with the quick-facts and watering baseline. Fold or pin to a fridge / kitchen wall as a quick reference next to the plant.
Expert tips
Three or four things most calathea owners get wrong
- Use filtered, rainwater, or boiled-and-cooled tap water. Calatheas are especially sensitive to fluoride and chlorine; tap water is the most common cause of brown tips.
- Group calatheas near other humidity-loving plants. The collective transpiration raises local humidity by 10-15%, which is often enough.
- If the leaves curl up tightly during the day (not just at night), the plant is asking for water or humidity. Mist or move to a more humid spot — do not overwater.
- Avoid leaf-shine sprays. They block the stomata on these thin leaves and cause more harm than the cosmetic gain is worth.
Background
Where this plant comes from
The plants long sold as 'calatheas' are mostly now classified in the genus Goeppertia following a 2012 phylogenetic reorganisation, though the trade name persists. The family Marantaceae originates in the rainforest understorey of South and Central America. The Calathea/Goeppertia rise in 21st-century houseplant culture is partly driven by the striking leaf patterns of cultivars like 'Orbifolia', 'Rattlesnake', and 'Medallion'.
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