Calathea & Prayer Plant Care (Calathea / Maranta / Ctenanthe)
Last Updated: March 2026
TL;DR
Prayer plants are the divas of the houseplant world — but oh, are they worth it. Their intricately patterned, hand-painted-looking foliageis unmatched. They fold their leaves up at night (the "praying" motion) and demand humidity, filtered water, and gentle light. Get the humidity right and they're stunning. Get it wrong and they'll let you know with crispy brown edges. The good news: they're completely pet-safe.
| Factor | Requirement |
|---|---|
| Botanical Name | Calathea spp., Maranta leuconeura, Ctenanthe spp. |
| Light | Low to medium indirect — no direct sun |
| Watering | Keep evenly moist — use filtered water |
| Humidity | High — 60%+ is essential |
| Temperature | 65-80°F (18-27°C); no cold drafts |
| Soil | Well-draining, peat-based mix with perlite |
| Toxicity | Non-toxic — safe for pets |
The Prayer Plant Family
"Prayer plant" is a catch-all name for several closely related genera in the Marantaceae family. The most common houseplant varieties include:
- •Calathea (now reclassified as Goeppertia) — medallion, ornata, orbifolia, rattlesnake, and dozens more. Known for bold, geometric leaf patterns.
- •Maranta — the classic "prayer plant" with the most dramatic leaf-folding. The lemon lime and red prayer plant varieties are hugely popular.
- •Ctenanthe — similar care to calathea with elegant, elongated leaves. Often sold as calathea.
All three genera share the same care requirements: high humidity, gentle light, and consistent moisture. If you can grow one, you can grow them all.
Light and Placement
These are forest floor plants — they evolved under dense tree canopies where light is dappled and soft. Direct sun bleaches their intricate patterns and scorches the thin, delicate leaves.
A north-facing or east-facing window is perfect. If placing near a south or west-facing window, pull them back a few feet or filter the light with a sheer curtain. For more on getting light levels right, check our indoor lighting guide.
Too little light slows growth and dulls the leaf patterns. Too much light causes fading and crispy edges. The sweet spot is bright ambient light without any direct sun rays.
The Humidity Challenge
Humidity is the make-or-break factor for prayer plants. They need 60% humidity or higher — far above the 30-40% typical in heated or air-conditioned homes. Without it, leaf tips and edges turn brown and crispy, no matter how well you water.
A dedicated humidifier near the plant is the most effective solution. Pebble trays help slightly, and grouping plants together creates a shared humidity microclimate. Misting is a short-term fix at best and can promote fungal issues if overdone.
Bathrooms and kitchens with natural light are often ideal locations because of their naturally higher humidity levels.
Watering Tips
Prayer plants prefer consistently moist soil — not soaking wet, not bone dry. Water when the top inch of soil begins to dry. The soil should feel like a wrung-out sponge: damp but never waterlogged.
Water quality matters enormously. Calatheas are highly sensitive to fluoride and chlorine in municipal water, which accumulates in the soil and causes brown leaf tips. Use filtered, distilled, or rainwater for best results. If you must use tap water, let it sit out overnight so chlorine can dissipate.
Common Mistakes to Avoid
- ✗Using unfiltered tap water. Fluoride and chlorine cause irreversible brown tips. Switch to filtered or distilled water.
- ✗Low humidity. Brown, crispy edges are almost always a humidity problem. Get a hygrometer and aim for 60%+.
- ✗Direct sunlight. Those beautiful patterns fade and burn in direct sun. Keep them in bright indirect light only.
- ✗Cold drafts. Tropical plants that hate temperature swings. Keep away from drafty windows and HVAC vents.
Popular Varieties
| Variety | Notable Features |
|---|---|
| Calathea Ornata | Dark green leaves with crisp pink pinstripe markings |
| Calathea Medallion | Round leaves with green-on-green medallion pattern, deep purple undersides |
| Lemon Lime Prayer Plant | Vibrant chartreuse and green herringbone pattern |
| Fishbone Prayer Plant | Delicate, fishbone-like light green markings on dark green leaves |
| Ctenanthe Burle-Marxii | Elongated leaves with bold geometric patterns, pale green and dark green |
Related Resources
Frequently Asked Questions
Calathea care centers on three things: high humidity (60%+), consistently moist but never soggy soil, and indirect light. They are rainforest understory plants that burn in direct sun and crisp up in dry air. Use filtered or distilled water — calatheas are notoriously sensitive to fluoride and chlorine in tap water, which causes brown leaf tips.
Leaf curling is almost always a sign of low humidity or underwatering. Prayer plants curl their leaves to reduce moisture loss. Increase humidity with a humidifier or pebble tray, and ensure the soil stays evenly moist. They may also curl temporarily in bright light as a natural protective response.
No — calatheas actually prefer low to medium indirect light. They evolved on the forest floor under a dense canopy. Direct sunlight fades their intricate leaf patterns and scorches the foliage. A north-facing or east-facing window is ideal. They can tolerate lower light than most houseplants, though very dim conditions slow growth.
Prayer plants (Maranta, Calathea, Ctenanthe) exhibit nyctinasty — their leaves fold upward at night like hands in prayer, then open flat during the day. This movement is driven by changes in water pressure (turgor) in special cells at the base of each leaf, triggered by light changes. It is completely normal and a sign of a healthy plant.
Yes! Calathea, Maranta, and Ctenanthe species are all non-toxic to cats and dogs. This makes them one of the best choices for pet-friendly homes that want dramatic, colorful foliage without the toxicity risk.
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