Philodendron Congo Rojo
A big, self-heading philodendron with glossy leaves that open burgundy and settle into dark green on red stems. It grows into a substantial floor plant without a pole, and asks for little beyond decent light and restraint with the watering can.
Congo Rojo is the philodendron for people who want the drama of a big aroid without the moss pole. It is self-heading, meaning the leaves grow from a thick central stem in a rosette rather than vining, so it stands up on its own and fills out into a rounded plant two to three feet across.
The colour is the point. New leaves emerge a deep wine red, hold it for a few weeks, then mature to a glossy dark green with red petioles. On a plant with a dozen leaves you get the whole sequence at once. It was bred in Florida for exactly this: tough, tidy, and coloured.
Light
Bright, indirect light keeps the red strong and the plant compact. It manages in medium light but the new leaves come in greener and the stems lengthen. A few feet from an east or west window is ideal. Direct midday sun scorches the leaves.
Water
The thick stem stores water, so err on the dry side. Water when the top two to three inches are dry, about every eight days in summer and every two weeks in winter. Water thoroughly until it runs out of the bottom, then empty the saucer. Yellowing lower leaves almost always mean too much water.
Soil and potting
A chunky, fast-draining mix: potting mix with a third of orchid bark and perlite. Repot every two years into a pot two inches wider; the root system is big and it likes a heavy pot for stability once it is large.
Feeding
Half-strength balanced feed every four weeks through the growing season. It is a hungry plant when actively pushing new leaves; skip feeding in winter.
Propagation
Harder than a vining philodendron. Mature plants occasionally produce offsets at the base, which can be cut away with roots and potted. Otherwise it is a tissue-culture plant and best bought.
In a hot, dry home
One of the better big aroids for a hot, dry home. It shrugs off forty percent humidity, tolerates warm rooms up to ninety, and the leathery leaves do not brown at the tips easily. Keep it away from the direct blast of a vent, and expect to water every five to six days in the peak of summer.
Philodendron Congo Rojo varieties
Same care, different look. These are the named forms you will see for sale.
- Congo Green
The all-green form. Same shape and habit, plain green stems, slightly faster.
- Congo Rojo Variegated
Cream and green splashes on the red-tinged leaves. Rare, slow, and priced accordingly. Needs brighter light to hold the variegation.
Problems and fixes
Lower leaves yellowing and dropping
Likely cause: Overwatering
Fix: Let the top three inches dry out; check that the pot drains freely.
New leaves green instead of red
Likely cause: Not enough light
Fix: Move closer to a bright window; the red returns on the next leaves.
Leaning to one side
Likely cause: Growing toward the light
Fix: Rotate a quarter turn every week.
Brown crispy patches
Likely cause: Direct sun
Fix: Pull it back from the glass.
Philodendron Congo Rojo questions
How big does Congo Rojo get?
Indoors, about three feet tall and wide over several years. It grows outward more than upward.
Does it need a moss pole?
No. It is self-heading and supports itself on a thick stem.
Is Congo Rojo pet safe?
No. It is toxic to cats and dogs if chewed, like all philodendrons.
Plants with a similar rhythm
Philodendron Prince of Orange
- Light
- Medium to bright indirect
- Water
- Weekly
- Pets
- Toxic
Philodendron Moonlight
- Light
- Medium to bright indirect
- Water
- Weekly
- Pets
- Toxic
Philodendron Birkin
- Light
- Medium to bright indirect
- Water
- Weekly
- Pets
- Toxic
