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Monstera deliciosa is a hemiepiphytic vine from Mexico and Central America that climbs trees in the wild. Indoors it wants bright indirect light, a moss pole or trellis to climb, and a watering rhythm that lets the top third of the soil dry between drinks. And no — it is not a split-leaf philodendron. That's a name, not a species, and the ASPCA lists this plant under "Ceriman," not Philodendron.
What it is
Monstera deliciosa Liebm. is accepted by Kew POWO and listed by Missouri Botanical Garden. Family: Araceae. POWO gives its native range as Mexico to Guatemala, and MBG as Mexico and Central America, with UConn Home Garden noting that it "is native to Mexico and Panama, but is found globally in tropic and subtropical regions."
The plant is a hemiepiphyte — it starts as a terrestrial seedling, then climbs trees using aerial roots. UConn Home Garden notes that seedlings in the wild exhibit negative phototropism — they grow toward darker areas, which signal the base of a larger tree, then start climbing toward the canopy. That's why the plant wants a moss pole or trellis indoors.
The 2018 reclassification that moved the tree-like philodendrons, such as selloum, from Philodendron to Thaumatophyllum did not affect Monstera. It's still in its own genus, though Kew POWO lists a few 19th-century Philodendron names, including Philodendron pertusum (1848), among its synonyms.
Light
Bright indirect light. No strong direct sun. MBG calls for "bright indoor light with no strong direct sun." A position a few feet back from an east window, behind a sheer on a south window, or a few feet from a west window all work.
Low light is survivable but slows the plant and prevents new leaves from developing the characteristic holes and splits (fenestrations). If your Monstera is producing entire leaves with no splits, light is usually the answer.
Watering
Water thoroughly, then allow the top quarter to one-third of the soil to dry before watering again, as NC State advises. MBG describes the rhythm as "water regularly during the growing season, allowing soils to dry some between waterings. Reduce watering from fall to late winter."
Yellowing leaves with mushy stems mean overwatering. Crisp brown edges with droopy stems mean underwatering. A moisture meter helps if you're new to the plant.
Soil and pH
A peaty, soil-based potting mix high in organic matter, with good drainage. NC State lists soil pH as neutral (6.0–8.0). Standard aroid mixes (potting mix + orchid bark + perlite + a little charcoal) work well — see our guide to soil for Monstera for specific recipes and the verified bagged options.
Repotting a plant that has filled its pot: how to repot a root-bound monstera.
Humidity
High humidity. NC State recommends "a humidifier or setting the plant container on a tray of wet pebbles" in dry interiors. MBG calls for "a warm and humid location." A room humidifier helps in dry winter homes; the plant tolerates average humidity in most months.
Temperature
Average warm indoor temperatures of 60–85°F (16–29°C) per NC State, which lists USDA Hardiness Zones 10a–12b for growing outdoors. Avoid cold drafts and locations below 60°F.
Pet safety
Toxic to cats and dogs per the ASPCA — listed under the common name Ceriman. The toxic principle is insoluble calcium oxalates. Symptoms include intense oral burning, drooling, vomiting, and difficulty swallowing. NC State also notes the sap can cause contact dermatitis on skin.
Place out of reach of pets and children. Wear gloves when pruning if your skin is sensitive to the sap.
More detail, including what to do if a pet chews one: Is monstera toxic to cats and dogs?
Common problems
| Symptom | Likely cause | Fix |
|---|---|---|
| No splits or holes in new leaves | Insufficient light, or plant still juvenile | Move to brighter indirect light; mature leaves develop fenestration with age + light |
| Yellowing leaves, mushy base | Overwatering, root rot | Let soil dry further between waterings; check root system; repot in fresh airy mix if rot present |
| Brown crispy edges | Low humidity or chronic underwatering | Humidifier or pebble tray; deep-water the pot |
| Plant flopping sideways | No support — wild Monstera climb trees, indoors they need a pole | Install moss pole or trellis; tie main stem to support |
| Aphids, mealybugs, thrips, scale, spider mites | All possible per MBG | Wipe leaves, treat with insecticidal soap or neem, and repeat as the product label directs |
What gets misreported
The "split-leaf philodendron" label is wrong. Monstera deliciosa is in the genus Monstera, not Philodendron. Both are in the aroid family (Araceae), but they are distinct genera with different growth habits, leaf morphology, and ASPCA database entries. The ASPCA lists Monstera under "Ceriman" — not under Philodendron. Any care guide that calls this plant a split-leaf philodendron is using a confused common name that mixes two unrelated genera.
The other near-universal misreport: claims that you can force fenestration on a young Monstera with high humidity or specific lux thresholds. The honest answer from NC State and MBG is that fenestration comes with maturity: only mature leaves have the holes. Good light keeps the plant growing toward that maturity. Time and light. Specific numerical thresholds aren't published in extension-grade sources for this plant.