Philodendron ‘Congo’ (sold as Green Congo, Red Congo, or occasionally Congo Rojo depending on leaf color) is a hybrid philodendron bred for a compact, upright growth habit rather than the climbing or trailing habit most philodendrons are known for. It’s a self-heading type, meaning new leaves emerge from a central growing point in a rosette rather than along a lengthening vine — the same general growth style as Philodendron Selloum or other tree philodendrons, but noticeably more compact and better suited to an average living room. The leaves are large, glossy, and paddle- or arrow-shaped, and a mature plant can still take up a fair amount of floor space even without climbing anywhere. If you’re used to vining types, see the general how to care for a philodendron guide for how the care compares.

Light

Bright, indirect light is ideal, and this plant will tolerate medium light reasonably well too, though growth slows and leaves stay smaller the further it gets from a window. Avoid direct afternoon sun, which can scorch the broad leaves. A spot near an east-facing window, or a few feet back from a south- or west-facing one, works well.

Watering

Let the top inch or two of soil dry out before watering again, then water thoroughly until it runs from the drainage hole. Philodendron Congo has a fairly large root mass for its pot size once mature, so it can go through water at a decent clip during active growth, but it still doesn’t want to sit in soggy soil between waterings. Reduce frequency in winter as growth slows.

Soil and pot

A well-draining, chunky potting mix works best — a standard indoor mix with added perlite or orchid bark gives the roots the aeration they need. Because this plant grows into a substantial rosette of large leaves without a vine to lean on a pole, it benefits from a pot with some weight and width to match its top growth and keep it from tipping. Repot every year or two as it outgrows its container, once roots are circling the pot or pushing up out of the soil; see how to repot a houseplant for the general process.

Humidity

Average home humidity is fine for an established plant, though higher humidity encourages larger, glossier leaves and faster growth. If your air runs dry, especially in winter, a humidifier or pebble tray will help; see how to increase humidity for houseplants for options.

Toxicity

Like all philodendrons, Congo contains calcium oxalate crystals and is toxic to cats and dogs if chewed or eaten, causing mouth irritation, drooling, and swelling. Keep it away from pets that like to chew on leaves, and see pet-safe houseplants for cats and dogs for non-toxic options if you need to keep a pet-friendly collection.

Common problems

Yellowing lower leaves are often just old leaves being shed as the plant grows — a normal, slow process for a self-heading plant like this one. If multiple leaves yellow at once, check that you’re not overwatering first.

Small, sparse, or slow-growing leaves usually point to too little light. Move the plant closer to a bright window and growth should pick up within a few weeks.

Brown, crispy leaf tips or edges are typically a sign of low humidity, inconsistent watering, or a buildup of fertilizer salts in the soil. Flush the soil thoroughly with water every few months if you fertilize regularly.

Drooping leaves that don’t perk back up after watering can indicate root rot from prolonged overwatering. Check the roots for a strong odor or mushy, dark tissue; see how to identify and fix root rot for how to assess and treat it.

No new growth for a long stretch is usually just a light or season issue rather than anything wrong with the plant. Growth naturally slows in winter, and low light will stall it further, so check both before assuming a problem.