Houseplant · Marantaceae

Calathea Medallion

Goeppertia roseopicta

Offer it soft water, warm air, and steady humidity, and the medallion leaves open to their full painted effect.

Light

Bright indirect

Warmth

61–⁠75°F · 16–⁠24°C

Hardiness

USDA 11–⁠12

Mature size

12–⁠18 in · 30–⁠46 cm

Pet-safe
Calathea Medallion

Overview

The Calathea Medallion brings a quiet drama to a room, its big rounded leaves reading like something hand-painted in lime-green over a deeper base. It belongs to the prayer plant family and traces back to the rainforests of South America, where it lives in the warm, shaded layer below the canopy. Each evening the leaves rise and fold like hands at rest, a daily motion known as nyctinasty that gives a room a slow rhythm to notice.

Think of this as a plant for the attentive home, one that rewards a little daily care. It is rated demanding for a reason: it asks for warmth, steady moisture, generous humidity, and water free of the fluoride and chlorine that flow from most taps. Meet those wishes and it holds its lush, richly colored presence. Skimp, and it lets you know quickly, most often with brown, crispy leaf edges.

Its compact, slow-growing habit keeps it around knee height, which makes it a graceful fit on a shelf, a desk, or a well-lit bathroom where the air stays humid. Keep it clear of direct sun, which scorches the foliage and dulls the pattern. Set it in the right corner and it earns its keep as a centerpiece that few other houseplants can rival.

Care

The short version: give it bright indirect light, never direct sun, and keep the soil evenly moist with distilled water or rainwater. Hold the room above 60% humidity, keep it warm, and feed monthly through spring and summer.

Light

Set it in bright, indirect light and keep it out of direct sun, which scorches the leaves and fades the pattern. It copes with partial to full shade better than most, though a too-dim corner mutes the color. A spot beside a bright window with a sheer panel drawn across it suits it perfectly.

Water

Hold the soil evenly moist but never soggy through the growing season, then ease back and keep it just damp over winter. Water quality matters more than anything, since this plant answers the fluoride and chlorine in tap water with brown tips. Reach for distilled water or rainwater instead.

Soil

Pot it in a well-drained, peaty mix rich in organic matter, with vermiculite or perlite folded in for drainage. A pH between 6.0 and 7.0, slightly acidic to neutral, suits it nicely. The mix should hold moisture without ever turning waterlogged.

Temperature

Keep it warm, between 61°F and 75°F (16°C to 24°C). It has no patience for cold and wants a steady temperature of at least 61°F (16°C) the year round, set well clear of draughts, open windows, and cold glass.

Humidity

This plant asks for humidity above 60% and protests a dry room with crisp leaf edges. Cluster it with other plants, stand it over a pebble tray, or run a humidifier nearby. A bright bathroom often gives it exactly the air it craves.

Feeding

Feed monthly with a balanced liquid fertilizer through spring and summer while the plant is in active growth, then pause for its winter rest. Lean toward light rather than heavy, since leftover salts gather in the soil and add to the brown-tip trouble.

Pruning

No real pruning is called for. Simply remove old leaves at the base as they yellow or brown, which keeps the plant looking tidy and turns its energy toward fresh growth. Trimming a browned tip back to a thin margin is fine for appearance.

Repotting

Repot every 1 to 2 years in spring, or sooner if roots circle the pot or escape the drainage holes, moving up just one pot size. This is also the moment to divide the clump if you would like more plants. Slowed growth or fast drying signals it is outgrowing its home.

Size & spacing

It stays small, reaching about 12 to 18 inches (30 to 46 cm) tall with a spread of 9 to 12 inches (23 to 30 cm). The slow, compact habit makes it simple to place on a shelf or desk where it sits neatly without ever crowding a corner.

Troubleshooting

Nearly every calathea worry surfaces on the leaves first, and most of it leads back to water, light, or humidity. Catch the early signs and you can usually settle the cause before it travels. Find the look that matches yours below, then ease the care that brought it on.

Severe

Yellowing, drooping leaves and a soft base

Let the soil stay sodden and root rot takes hold, leaving the plant to droop even while the mix sits wet. Slide it from the pot and look at the roots, which go brown and soft rather than firm and pale. Cut away the spoiled roots, settle it into fresh well-drained mix in a pot that drains freely, and pull back on the watering.

Fix:

  • Stop watering and let the medium drain
  • Unpot, trim away soft rotted roots, and repot into fresh well-drained mix
  • Use a pot with drainage holes and water only when appropriate
Setback

Delicate webbing and a speckled leaf surface

A warm, dry corner is an open invitation to spider mites, which settle on the undersides and leave a thin veil of webbing. Tilt a leaf toward the light and the surface reads as speckled with little yellow dots. Rinse the foliage, lift the humidity, and treat with insecticidal soap or horticultural oil, setting the plant aside from its companions until things settle.

Fix:

  • Rinse foliage and increase humidity
  • Treat with insecticidal soap or horticultural oil, repeating as directed
  • Isolate affected plant to limit spread
Cosmetic

Crisp brown rims edging the foliage

When the elegant outline of each leaf starts to fray at the rim, the trouble usually comes from fluoride and chlorine in tap water collecting quietly in the tissue. A dry room and a buildup of feeding salts only deepen the look. Pour distilled water or rainwater instead, hold the room's humidity above 60%, and rinse the pot through now and again to clear the salts.

Fix:

  • Switch to distilled water or rainwater
  • Raise humidity above 60% with a pebble tray, humidifier, or regular misting
  • Flush the soil periodically to leach out accumulated salts and avoid over-fertilizing
  • Trim off badly browned tips for appearance
Cosmetic

Pale, sun-faded blotches across the leaves

Sit this plant in a flood of direct sun and the foliage pays for it with leaf scorch and a washed-out, paler version of its painted pattern. The marks appear where the light lands hardest, and afternoon sun is the worst offender. Shift it back into bright indirect light or partial shade, or draw a sheer panel across a bright window to take the edge off.

Fix:

  • Move to a spot with bright indirect light or partial to full shade
  • Avoid direct sun, particularly afternoon sun
  • Filter strong light with a sheer curtain
Cosmetic

Spotting and blotching marking the leaf surface

Scattered spots and blotches usually mean leaf spot disease, which moves in when foliage stays damp and the air around the plant hangs still. Direct your watering at the soil rather than over the leaves, give the plant room to breathe so air can move, and lift away the marked leaves.

Fix:

  • Avoid wetting the foliage when watering
  • Improve air circulation
  • Remove affected leaves

Toxicity

Reassuring news for pet owners: the Calathea Medallion is safe to live with. The ASPCA lists Calathea and the prayer plant as non-toxic to cats, dogs, and horses, with no toxic compounds on record. A pet that chews a leaf may get a mild, passing stomach upset from the roughage, as with any houseplant, but nothing here will poison an animal or a child.

Safe for

People · Cats · Dogs · Horses · Rabbits · Livestock · Birds

Cats None

A safe choice for a cat-friendly home, with no toxic principles on record. Should a cat sample a leaf, the only likely result is a moment of queasiness from the roughage.

Dogs None

Cleared for dogs by the ASPCA, so it sits comfortably in a household with one. A larger mouthful might bring a brief, mild bout of stomach upset, and no more.

Horses None

Listed non-toxic to horses, which means a stray graze carries no risk of poisoning.

Rabbits None

Nothing in the leaves will harm a rabbit. Keep any tasting to the occasional nibble, since their digestion does best on familiar hay and greens.

Livestock None

No toxic compounds pose a threat to grazers such as goats or sheep, and as a tender tropical it rarely sits anywhere they could reach.

Birds None

The foliage holds no known toxins for birds, so a pet bird that perches or pecks among the leaves stays out of harm.

People None

Comfortable to live with around children. It is no edible, but a leaf finding a small mouth will poison no one.

As with any plant, ingestion of large amounts of foliage may cause mild, transient gastrointestinal upset that is not due to toxicity

Varieties

The Medallion name stretches across a couple of species and a handful of colorful relatives in the same group. These are the ones you are most likely to meet under that label.

Goeppertia veitchiana 'Medallion' (syn. Calathea veitchiana; 'Medaillon')

Most plants sold under the Calathea Medallion name are Goeppertia veitchiana, an identification backed by NC State and the RHS. The large rounded leaves show a lime-green and creamy-white medallion above a deep burgundy reverse.

Goeppertia roseopicta 'Medallion'

NC State Extension records a second Medallion under Goeppertia roseopicta, its dark green upper surface carrying silver stripes above a purple reverse.

'Dottie'

A roseopicta cultivar whose pink central vein spreads in fine feathering over near-black leaves.

'Rosy'

A roseopicta cultivar showing vivid pink at the leaf centers, held within a slim green margin.

How to propagate

There is a single way to make more of a Calathea Medallion, and it works dependably once you know what the plant will and will not do.

DivisionModerate

Late spring, typically at repotting during active growth · Several weeks to a few months for new divisions to root and resume growth

There is just one path to more of this plant, and that is division, since it refuses to grow from stem or leaf cuttings. Take it on in late spring while the plant is in active growth, usually as you repot, parting the rhizome clump into sections that each hold their own roots and shoots. Let the new divisions take their time, since they need anywhere from several weeks to a few months to root in and pick up growth again.

Myths

Myth

Calatheas belong with the tropical houseplants that are unsafe around pets.

Reality

This worry mixes calatheas up with the riskier tropicals they often sit beside on a shelf. The ASPCA lists both Calathea and the Prayer Plant as non-toxic to cats, dogs, and horses. You can keep this plant in a home with pets without worry.

Myth

The Medallion is, at heart, a real Calathea.

Reality

Most of the species once filed under Calathea, roseopicta and veitchiana among them, now sit in the genus Goeppertia. Kew gives the accepted name as Goeppertia roseopicta, holding Calathea roseopicta only as a synonym, so the familiar label survives in the shops rather than in the botany.

Myth

Tap water is fine for a Calathea.

Reality

Calatheas and the wider prayer plant family take poorly to the fluoride and chlorine in most tap water, and the leaves answer with browning at the tips and edges. Distilled water or rainwater keeps the foliage clean, and that single swap settles most leaf-tip browning on its own.

Sources