How to Care for Calathea Medallion

Calathea Medallion is a showy tropical foliage plant grown for its large, rounded leaves patterned with feathery brushstrokes of green and purple-red undersides. A prayer plant, it folds its leaves upward at night. It is a moderate-difficulty houseplant that rewards steady, attentive care.

Light

Provide bright, indirect light. An east-facing window or a spot a few feet back from a brighter window is ideal. Direct sun scorches the delicate leaves and bleaches the markings, while deep shade dulls the pattern and slows growth. Rotate the plant occasionally so it grows evenly, and keep it out of harsh midday rays.

Water

Keep the soil evenly moist but never soggy, watering when the top inch begins to dry. Calatheas are sensitive to the minerals and chemicals in tap water, which can brown the leaf edges; use filtered, distilled, or rainwater at room temperature where possible. Reduce watering in winter, but never let the root ball dry out completely, as this triggers crisping and curling.

Soil & Potting

Use a light, airy, moisture-retentive mix that still drains freely, such as a peat- or coir-based potting mix loosened with perlite and a little orchid bark. The blend should hold moisture without becoming waterlogged. Always plant in a pot with drainage holes, and choose a container only slightly larger than the root ball to avoid soil that stays wet.

Humidity & Temperature

High humidity is essential; aim for 60 percent or more. Dry indoor air is the most common cause of crispy brown leaf edges. Boost humidity with a pebble tray, a nearby humidifier, or grouping plants together. Keep temperatures warm and stable, between 65 and 80 F, and shield the plant from cold drafts, heating vents, and sudden temperature swings.

Feeding

Feed lightly during the growing season, roughly every four weeks in spring and summer, with a balanced liquid houseplant fertilizer diluted to half strength. Calatheas are sensitive to salt buildup, so flush the soil occasionally and stop feeding in autumn and winter when growth naturally slows.

Propagation

Calathea Medallion is propagated by division rather than cuttings. At repotting time, gently tease apart the root ball into clumps, each with several leaves and a healthy portion of roots, and pot them up separately. Keep divisions warm, humid, and evenly moist while they recover, as they resent disturbance and may sulk briefly.

Repotting / Pruning

Repot every one to two years in spring, moving up just one pot size in fresh mix. Handle the roots gently. Pruning is minimal: simply trim away yellowed, damaged, or fully browned leaves at the base with clean scissors. You can also snip off crispy leaf tips, following the leaf's natural shape, for a tidier look.

Common Problems & Pests

Brown, crispy leaf edges signal low humidity or mineral-heavy water; raise humidity and switch to filtered water. Curling or drooping leaves indicate underwatering or dry air, while yellowing often means overwatering. Fading patterns point to too little light. Spider mites are the main pest, thriving in dry air, so keep humidity high and inspect leaf undersides regularly; treat with insecticidal soap if needed.

Seasonal Care Tips

In spring and summer, keep the plant in active growth with steady moisture, regular feeding, and warm, humid air, and repot or divide if needed. In autumn and winter, reduce watering slightly and stop feeding, but maintain warmth and humidity, as indoor heating dries the air and is the season this plant struggles most. Keep it well away from cold windowpanes and radiators.