Calathea Medallion (Rose-Painted Calathea) care

Light

In the wild calathea medallion grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Bright, indirect light is ideal; it also tolerates medium indirect light. Keep out of direct sun, which fades the leaf pattern and scorches foliage. An east-facing window or a few feet back from a brighter window works well. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for when the top 25% of the soil dries out, roughly weekly for calathea medallion, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Keep the soil lightly and evenly moist but never soggy; water when the top inch or quarter of the pot dries, then let it drain fully and empty the saucer. Sensitive to fluoride and salts in tap water, so use filtered, distilled, or rainwater to prevent leaf browning. Reduce watering in winter.

Soil and pot

Calathea Medallion grows best in light, well-draining, peat-based mix. Use a moisture-retentive but airy mix, such as peat or coco coir blended with perlite and a little bark or charcoal, at a slightly acidic pH of about 6.0 to 6.5. Always plant in a pot with drainage holes. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Calathea Medallion sits happiest at around 60%+ humidity and 18-24°C (65-75°F). Loves high humidity, ideally above 60%. Low humidity causes the characteristic crispy brown leaf edges. Boost with a humidifier, pebble tray, or grouping plants; this calathea performs well in bathrooms and kitchens. If you keep the room above 18 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed calathea medallion sparingly. Feed with a balanced houseplant fertiliser at half strength roughly monthly (or every two weeks if growing actively) during spring through early autumn. Do not fertilise in winter. Over-feeding causes salt build-up and brown tips, so flush the soil periodically. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on calathea medallion in the Growli community. Each is annotated with the most common cause so you know where to start.

• Crispy brown leaf edges — Usually low humidity, or fluoride/salts in tap water. Raise humidity above 60% and switch to filtered, distilled, or rainwater.
• Yellowing leaves — Most often overwatering and soggy soil. Let the top of the soil dry between waterings, ensure drainage, and reduce frequency in winter.
• Curling or limp leaves — A sign of underwatering or very dry air. Keep the soil evenly moist and increase ambient humidity.
• Faded or scorched foliage — Too much direct sun bleaches the pattern and burns leaves. Move to bright indirect light.
• Spider mites and other pests — Dry conditions invite spider mites, plus mealybugs, aphids, and scale. Wipe leaves, raise humidity, and treat with insecticidal soap or neem.
• Root rot — Caused by chronic overwatering, especially in winter. Let soil dry out more, improve drainage, and trim any mushy roots.

Propagation

Propagate by division during repotting in spring. Gently separate the rhizome clumps so each section has healthy roots and at least one leaf, then pot individually in fresh moist mix and keep warm and humid while they establish. Stem cuttings do not work for this plant. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Calathea Medallion is pet-safe. The ASPCA lists Calathea (Calathea spp., family Marantaceae) as non-toxic to dogs, cats, and horses, which covers this cultivar (botanically Calathea/Goeppertia roseopicta). Note that ingesting any plant can still cause mild gastrointestinal upset, so discourage nibbling. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Calathea Medallion deep-dive guides

Every aspect of calathea medallion care, each with its own calibrated guide:

• Calathea Medallion watering schedule
• Calathea Medallion light requirements
• Best soil mix for calathea medallion
• Calathea Medallion fertilizing guide
• When to repot calathea medallion
• How to propagate calathea medallion
• Calathea Medallion growth rate & size
• Calathea Medallion cold hardiness
• Calathea Medallion temperature & humidity
• Is calathea medallion toxic to cats & dogs?

Related guides

Calathea Medallion is also known as Calathea Medallion, Rose-Painted Calathea, Medallion Prayer Plant, and Calathea roseopicta 'Medallion'.

• Types of calathea — varieties identified, with care and pet-safety
• Snake plant care — light, water and common problems
• Dracaena care — light, water and common problems
• Peperomia care — light, water and common problems
• All 389 plant care guides in the Growli library