How to Care for a Calathea

Updated 2026 · the stunning "prayer plant" with a reputation for being dramatic — here's how to actually keep it happy

Calatheas (now often reclassified as Goeppertia, and closely related to the prayer plant, Maranta) have some of the most spectacular foliage in the houseplant world — bold stripes, feathered patterns, and deep purple undersides that fold up at night like hands in prayer. They also have a reputation for being fussy, and it's mostly earned. But the drama is predictable: nearly every calathea problem comes down to water quality, humidity, or inconsistent watering. Get those three right and the crispy edges and curling leaves largely stop. Here's the full picture.

Light: bright indirect, never direct sun

Calatheas grow on the shaded forest floor, so they want bright, indirect light and will scorch in direct sun — harsh rays fade those beautiful patterns and bleach or burn the leaves. A spot near an east-facing window, or a few feet back from a brighter south or west window, is ideal. They tolerate medium light better than most patterned plants, which makes them good for interior rooms, but too little light means slow growth and duller markings. If the colors are washing out, it's usually getting too much direct sun; if it's leggy and sluggish, it needs a bit more (indirect) light.

Watering: keep it lightly, evenly moist

Unlike the dry-out-between-drinks crowd (pothos, snake plants, succulents), calatheas like their soil kept lightly and evenly moist — not soggy, never bone dry. Water when the top inch feels barely dry, letting it drain fully and emptying the saucer so roots never sit in water. Let it dry out completely and the leaves crisp and curl; keep it waterlogged and you'll rot the roots. This narrow window is a big part of why calatheas feel demanding: they punish both extremes. Consistency is everything, which is exactly the kind of thing that's easy to get wrong on a busy week.

The tap-water problem

Here's the single most important calathea-specific tip: they are sensitive to the fluoride, chlorine, and salts in tap water. That sensitivity is behind a huge share of the brown, crispy leaf edges people blame on humidity. If your calathea keeps browning at the tips and margins despite decent care, switch to filtered, distilled, or rainwater (or leave tap water out overnight to let some chlorine off-gas — though this doesn't remove fluoride). It often makes a dramatic difference. Spider plants have the same quirk; calatheas are just fussier about it.

Humidity: high, and non-negotiable

Calatheas are true tropicals and want higher humidity than most homes provide — ideally 50–60%+. Dry indoor air, especially in winter with the heat running, causes curling and crispy edges. The reliable fixes are a cool-mist humidifier (by far the most effective), grouping plants together, a pebble tray, or keeping it in a bright bathroom or kitchen. Misting is largely a myth here — it evaporates within minutes and can encourage fungal spots on the leaves. Use a small hygrometer so you're managing the actual number, not guessing.

Why is my calathea curling, crisping, or browning?

The classic calathea complaints almost always trace to the same handful of causes:

• Curling leaves → usually underwatering or low humidity (sometimes too much light). Check the soil and the air first.
• Crispy brown edges/tips → tap-water minerals, low humidity, or letting the soil dry out. Switch to filtered water and raise humidity.
• Yellowing leaves → typically overwatering/soggy soil. Ease off and check drainage.
• Faded or bleached patterns → too much direct sun. Move it to brighter indirect light.
• Leaves not "praying" (folding up at night) → often a sign it's unhappy with light or watering, though some variation is normal.

Note that older leaves naturally decline over time — a bottom leaf or two crisping as new growth comes in is normal. A wave of new browning is what signals something's off.

Temperature

Keep calatheas warm and stable, around 65–80°F (18–27°C), and away from cold drafts, AC vents, and chilly windows. They dislike sudden temperature swings and cold air, which can trigger curling and browning on top of everything else.

Soil, potting, and feeding

Use a well-draining but moisture-retentive mix — a standard indoor potting mix with some added peat or coco coir and a little perlite works well — in a pot with a drainage hole. Calatheas have relatively shallow roots and don't need frequent repotting; move up one pot size in spring only when it's clearly rootbound, and expect a little sulking afterward. Feed with a balanced liquid fertilizer at half strength every 4–6 weeks during the growing season, and stop in fall and winter. Salt buildup from over-fertilizing can worsen leaf-edge burn, so go light.

Pets

Good news for animal households: calatheas (and prayer plants) are non-toxic to cats and dogs, making them one of the safer statement plants to keep around curious pets.

Quick problem guide

• Crispy brown edges → tap-water minerals, low humidity, or dried-out soil. Filtered water + humidifier + steady watering.
• Curling leaves → underwatered or dry air (occasionally too much light). Water and raise humidity.
• Yellow leaves → overwatering. Let the top inch dry a touch more and check drainage.
• Faded patterns/bleached spots → too much direct sun. Move to bright indirect light.
• Drooping → usually thirsty or too cold. Check soil moisture and drafts.

The one thing that ties it all together

Look at that list and a pattern jumps out: the calathea's biggest weakness is inconsistent watering — it curls when it dries out and rots when it stays soggy, with a narrow happy zone in between. That's what makes it feel high-maintenance, and it's exactly the part Plant Parenthood takes off your plate. It builds a watering schedule tuned to your calathea's pot, light, and the season, and reminds you the moment watering is genuinely due — so the soil stays evenly moist instead of swinging between bone-dry and waterlogged. Pair steady watering with filtered water and higher humidity, and this "diva" turns into one of the most rewarding plants you own.

FAQ

Why does my calathea keep getting brown, crispy edges? The most common causes are tap-water minerals (fluoride, chlorine, salts), low humidity, and letting the soil dry out. Switch to filtered, distilled, or rainwater, raise humidity to 50–60%+ with a humidifier or pebble tray, and keep the soil lightly and evenly moist. Trim the crispy parts off; they won't turn green again.

How often should I water a calathea? Water when the top inch of soil is just barely dry — often roughly weekly, but it depends on your light, pot, and season. Calatheas like to stay lightly moist, never soggy and never bone dry, so check the soil with your finger each time rather than watering on a fixed calendar.

Do calatheas really need high humidity? Yes — they're tropical and want around 50–60%+, higher than most homes, especially in winter. A cool-mist humidifier is the most effective fix, along with grouping plants or a pebble tray. Misting doesn't do much and can encourage leaf spots, so skip it in favor of raising the ambient humidity.

Why are my calathea's leaves curling? Curling usually means it's underwatered or the air is too dry, and sometimes that it's getting too much light. Check the soil moisture and your humidity first; if both are fine, make sure it's in bright indirect light rather than direct sun. Consistent watering typically resolves recurring curl.

Are calatheas toxic to pets? No — calatheas and prayer plants are non-toxic to cats and dogs, which makes them a great choice for pet households compared with many other statement houseplants.