How to Water Prayer Plants: Calathea & Maranta Care Guide

Prayer plants are beautiful, expressive, and absolutely unforgiving about water. Too much and the roots rot. Too little and the leaves curl, crisp, and brown. Here’s how to get prayer plant watering right.

Prayer plants — the common name for both Maranta and Calathea species — are among the most popular houseplants for their stunning patterned foliage and their distinctive habit of folding their leaves upward at night. They’re also among the most commonly killed, and the reason is almost always watering. Prayer plant watering requires a narrow moisture range: consistently moist soil that never becomes waterlogged and never dries out completely.

This guide covers everything you need to know about prayer plant watering — how often to water calathea and maranta, what water to use, signs of too much and too little moisture, and how self watering devices like the BabaBerry AcquaTerra and Dynamic Dripper can maintain the consistent moisture these plants demand.

01 · Frequency

How often to water prayer plants

There is no universal schedule for prayer plant watering because the rate your soil dries depends on pot size, soil mix, humidity, light, and temperature. The correct answer is: water when the top inch of soil feels dry to the touch, but before the soil dries more than halfway through the pot.

In practice, this typically means watering every 5–7 days in spring and summer (active growth), and every 10–14 days in fall and winter (dormancy). But checking the soil with your finger is always more reliable than counting days. The University of Florida IFAS Extension recommends the finger-test method over scheduled watering for all moisture-sensitive tropical houseplants.¹

02 · Too Much Water

Signs of overwatering prayer plants

Overwatering is the #1 killer of prayer plants. The roots sit in waterlogged soil, oxygen is cut off, and root rot sets in — often before you notice any above-ground symptoms. By the time leaves turn yellow and mushy, the root damage may already be severe.

Root rot is invisible until it isn’t. By the time the leaves yellow and turn mushy, the damage underneath has usually been spreading for weeks.

Early signs of overwatering calathea and maranta include yellowing lower leaves, a musty smell from the soil, fungus gnats hovering around the pot, and soil that stays wet for more than 7–10 days after watering. If you see these, let the soil dry more before the next watering, check that your pot has drainage holes, and consider repotting into a chunkier, better-draining soil mix.

03 · Too Little Water

Signs of underwatering prayer plants

Underwatered prayer plants curl their leaves inward, developing crispy brown edges and tips. The leaves may also lose their vibrant color and become dull or pale. Unlike overwatering (which is often invisible until too late), underwatering is immediately visible — prayer plants are dramatic about drought stress.

If your calathea or maranta is curling, water thoroughly until water drains from the bottom of the pot, and then keep the soil consistently moist going forward. A single underwatering event won’t kill the plant, but repeated dry-outs cause cumulative leaf damage that won’t reverse on existing leaves.

04 · The Tools

Why self watering devices work well for prayer plants

The core problem with prayer plant watering is the narrow margin between too wet and too dry. Manual watering introduces inconsistency — you water heavily one day, forget for a few days, then overcompensate. Self watering devices deliver moisture at a steady, consistent rate that avoids both extremes.

The narrower a plant’s moisture band, the more it benefits from passive self-regulation. Manual watering oscillates; porous clay equilibrates.

The AcquaTerra terracotta watering spike is particularly well-suited for prayer plants because its porous clay self-regulates based on soil moisture tension — it releases more water when the soil is dry and slows when it’s moist. This passive regulation matches the narrow moisture band prayer plants prefer. For more on the mechanism, see our full AcquaTerra guide.

The Dynamic Dripper works as well, with its adjustable valve set to a moderate rate (1 drop every 30–60 seconds) for consistent delivery. For vacation watering a 1–2 week absence is comfortable for either device.

If your home runs dry in winter, a humidifier near your calathea collection will likely do more for leaf health than any change to your watering routine. Clemson Cooperative Extension makes the same observation about indoor tropicals generally.³

05 · The Bottom Line

Consistency over volume

Prayer plant watering is about consistency, not volume. Keep the soil evenly moist but never soggy, use filtered or rain water to avoid chemical leaf burn, maintain high humidity, and avoid letting the soil dry out completely. Self watering devices that deliver steady, measured moisture — whether terracotta spikes or adjustable drip systems — are the most reliable way to maintain the narrow moisture range calathea and maranta need to thrive.