Calathea

Water calathea when the top 1-2 inches of soil feels dry, using filtered, rain, or distilled water to avoid leaf tip burn from fluoride and chlorine in tap water. Avoid overwatering, which can lead to root rot, and never let the plant sit in standing water in its saucer. Reduce watering frequency slightly in the winter when growth slows.

Calathea thrives in bright, indirect light, such as that from a north or east-facing window, to preserve its vibrant leaf patterns. Avoid direct sunlight, which will scorch its delicate leaves, cause fading, and lead to unsightly brown patches. It can tolerate lower light conditions, but growth may slow and leaf variegation may become less prominent.

Use a well-draining, lightweight, peat-free potting mix rich in organic matter, such as a blend of coco coir, perlite, orchid bark, and worm castings. The soil should retain gentle moisture without becoming waterlogged, and have a slightly acidic pH between 6.0 and 6.5 to support healthy root growth. Avoid heavy, compacted garden soils that restrict air flow to the roots.

Feed calathea once a month during the spring and summer growing season with a balanced, water-soluble houseplant fertilizer diluted to half the recommended strength. Do not fertilize in fall and winter, when the plant is dormant, as this can cause salt buildup in the soil that burns leaf tips. Flush the soil every 3-4 months during active growth to remove excess fertilizer salts.

Calathea prefers consistent warm temperatures between 65-85°F (18-29°C), which mimics its native tropical habitat. Avoid exposing it to temperatures below 60°F (15°C), as cold drafts from windows, doors, or air conditioning units can cause leaf drooping, browning, and permanent damage. Keep it away from heating vents in winter, which dry out the air and foliage.

Prune calathea as needed by removing yellowed, brown, or damaged leaves at the base of their stems using clean, sharp scissors or pruning shears. Regular pruning improves air circulation around the plant, reduces the risk of fungal diseases, and redirects energy to new, healthy growth. You can also trim away unsightly leaf tip browning with clean scissors, cutting just above the damaged edge to follow the leaf’s natural shape.

The easiest and most reliable way to propagate calathea is through division during repotting in the spring, gently separating the root ball into smaller clumps with at least 2-3 healthy leaves each before planting in individual pots. It can also be grown from stem cuttings, though this method has a lower success rate, as cuttings need consistent high humidity and warm temperatures to root. Avoid propagating from leaf cuttings, as calathea cannot produce new growth from leaf tissue alone.

Calathea requires high humidity between 50-70% to thrive, as it is native to moist tropical understories. Low humidity will cause brown leaf tips, curling foliage, and stunted growth, so boost moisture by placing the plant on a pebble tray filled with water, grouping it with other humidity-loving plants, or using a room humidifier. Avoid misting directly on the leaves, as prolonged moisture on the foliage can increase the risk of fungal leaf spot diseases.

Repot calathea every 1-2 years in the spring, or when you see roots growing out of the drainage holes at the bottom of the pot, indicating it has become root-bound. Choose a pot that is only 1-2 inches larger in diameter than the current one, as an overly large pot will hold excess moisture that can cause root rot. Gently loosen the root ball before placing it in fresh potting mix, and water thoroughly after repotting to help the plant adjust.