Tree philodendron (Thaumatophyllum bipinnatifidum) care

Aroids · easy to keep

Tree philodendron (Thaumatophyllum bipinnatifidum) wants bright indirect to a couple of hours of direct sun. Water it weekly. Water when the top third of the pot is dry. Philodendrons wilt visibly when genuinely thirsty and recover within hours, which makes them easy to read. Pot it in loose, airy aroid mix with plenty of bark and perlite. Balanced liquid feed at half strength every third watering through the growing season, and repot every 1.5 years. Humidity: fine at room humidity, faster growth above 60%. Toxic to cats, dogs and people if chewed — the sap carries insoluble calcium oxalate crystals, which burn the mouth and throat.

Still sold as Philodendron selloum, and still called a tree philodendron, though botanists moved it to Thaumatophyllum in 2018. It is a self-heading plant rather than a vine: a thick woody trunk with a crown of deeply cut leaves, spreading wider than it is tall. It needs floor space more than it needs anything else.

Quick facts

Water: Water weekly. Water when the top third of the pot is dry. Philodendrons wilt visibly when genuinely thirsty and recover within hours, which makes them easy to read.
Light: Bright indirect to a couple of hours of direct sun.
Humidity: Fine at room humidity, faster growth above 60%.
Soil: Loose, airy aroid mix with plenty of bark and perlite.
Feeding: Balanced liquid feed at half strength every third watering through the growing season.
Repotting: Repot every 1.5 years.
Toxic to pets: Toxic to cats, dogs and people if chewed — the sap carries insoluble calcium oxalate crystals, which burn the mouth and throat. Keep it off the floor if anything in the house tastes its way through life.
Difficulty: Easy.
Mature size: 1.5 m tall, 2 m wide.
Native to: South America.

Watering a Tree philodendron

Water weekly. Water when the top third of the pot is dry. Philodendrons wilt visibly when genuinely thirsty and recover within hours, which makes them easy to read.

That cadence is the one PlantParlour sets for this species when you name it, and it is deliberately on the cautious side — a plant that asks a day early is safer than one that asks a day late. Log each watering and the reminder moves with the plant rather than with the calendar.

Light

Brighter than most philodendrons: this is a self-heading plant from open forest edges, and it will take morning sun happily. In dim light the leaf stalks stretch out until the plant flops.

Humidity and temperature

Fine at room humidity, faster growth above 60%. Central heating in winter is what turns a comfortable room into a dry one, and it is the usual reason an established plant suddenly browns at the edges or picks up spider mites.

Soil and potting

Almost all of them climb or creep rather than sit in deep soil, so the roots want air. Half potting compost, half bark and perlite is the standard recipe. Crawlers like gloriosum want a shallow wide pot rather than a deep one — the rhizome runs along the surface.

Feeding

Balanced liquid feed at half strength every third watering through the growing season. Stop feeding in autumn and start again when you see new growth in spring — feeding a plant that isn't growing just builds up salts in the pot.

Repotting

Repot every 1.5 years. Repot every second spring. It builds a thick woody trunk over time and gets heavy — a wide, weighted pot stops it tipping.

Common problems

Long bare stems with leaves far apart
Too little light. The plant is reaching.

Fix: Move it brighter and cut the leggy growth back — it will branch from the nodes below the cut.
Yellow lower leaves
Usually overwatering; occasionally just age, one leaf at a time.

Fix: If several go at once, check the roots. Brown and soft means rot; trim them and repot into fresh airy mix.
Variegation fading back to plain green
Not enough light for the plant to afford the white tissue.

Fix: Give it more light, and prune back to a node that still shows variegation — the plant grows on from the last variegated point.
Brown tips on new leaves that were fine in the old pot
Low humidity while the leaf was still unfurling.

Fix: Group plants together or run a humidifier while new leaves open; the damage is cosmetic and permanent on that leaf.

Propagation

Stem cuttings root readily: take a section with at least one node and a leaf, and put it in water, perlite or damp sphagnum. Crawling species are divided instead, by cutting the rhizome between two growth points.

A cutting taken in PlantParlour keeps its link to the plant it came from, so a propagation years later still traces back to the mother plant — which is the point if you ever sell or trade it.

Toxicity and safety

Toxic to cats, dogs and people if chewed — the sap carries insoluble calcium oxalate crystals, which burn the mouth and throat. Keep it off the floor if anything in the house tastes its way through life.

Questions people ask

How often should you water a Tree philodendron?

Water weekly as a starting point — that is the cadence PlantParlour sets for Thaumatophyllum bipinnatifidum. Water when the top third of the pot is dry. Philodendrons wilt visibly when genuinely thirsty and recover within hours, which makes them easy to read. Light, pot size and the time of year all move that number, so treat it as a reminder to go and check rather than a rule.

How much light does a Tree philodendron need?