Monstera — Monstera deliciosa
Monsteras are the easiest large-leaf tropical to keep. They forgive missed waterings, tolerate medium light, and recover quickly from mistakes. The one trap: yellow lower leaves almost always mean too much water, not too little.
Quick care specs.
| Parameter | Value |
|---|---|
| Watering | Every 7 days (summer), 12 days (winter) |
| Light | Bright indirect preferred; tolerates medium (500–1000 lux) |
| Lux range | 1200–2500 |
| Humidity | 40–60% ideal; tolerates 30% but growth slows |
| Temperature | 18–27°C; stops growing below 15°C |
| Toxicity | Mildly toxic — calcium oxalate crystals |
| Difficulty | easy |
Watering guide.
Water when the top 3–4 cm of soil is dry. In a 25 cm pot with plastic liner and bright indirect light, this is roughly every 7–12 days in summer and every 10–14 days in winter. Soak until water runs out the drainage hole, then empty the saucer within 30 minutes — monsteras don't tolerate sitting in water.
Yellow lower leaves are the classic over-watering sign. If you see one yellow leaf every few weeks, that's normal senescence. Multiple yellow leaves at once, especially with soft stems, means the roots are drowning — check the root ball and repot if it smells sour. For a schedule matched to your pot and light, try the watering schedule generator.
Light requirements.
Monsteras thrive in 1200–2500 lux — the equivalent of 1.5–2 metres from a bright east or south-facing window. They tolerate down to 500 lux, but at that level new leaves will be small and unsplit. For fenestrations (the iconic holes and splits), they need at least 1500 lux for 6+ hours a day.
Signs of too little light: small new leaves with no splits, long thin internodes, slow growth. Signs of too much direct sun: yellowing or bleached patches on upper leaves. The light requirement matcher helps estimate lux at your plant's exact spot.
Common problems.
| Symptom | Cause | Fix |
|---|---|---|
| Yellow lower leaves | Over-watering (most common) | Let soil dry 70%; check roots for rot |
| New leaves have no splits | Insufficient light | Move closer to window; target 1500+ lux for 6h daily |
| Brown crispy edges | Low humidity or fertilizer burn | Flush soil monthly; mist or group with other plants |
| Drooping leaves | Under-watering or root rot — check which | Finger-test soil; if dry water, if wet check roots |
| Sticky sap on leaves or floor | Normal guttation (water release), not a problem | Wipe up; reduce watering slightly if excessive |
| Aerial roots growing everywhere | Normal — they seek support | Tuck into soil or add moss pole for climbing |
Propagation.
Monsteras are among the easiest plants to propagate. Cut a stem below a node (the bumpy ring where a leaf meets the stem), ideally including an aerial root. A cutting with one leaf and one node will root in water in 2–4 weeks with roughly 90% success. Change water every 5 days and keep in bright indirect light.
Transplant to soil when roots are 5–8 cm long. The first month in soil is the riskiest — water lightly and keep humidity high. A cutting without a node will never root, so the node is non-negotiable.
FAQ.
Why doesn't my monstera have splits in its leaves?
Fenestrations (splits) appear with age and light. Young plants (under 2–3 years) often have solid leaves. If a mature plant still has no splits, it's almost always a light issue — move it to a brighter spot and the next new leaf should split.
Should I use a moss pole?
For climbing growth and larger leaves, yes. Monsteras are vining plants in the wild and produce bigger, more fenestrated leaves when climbing. Without support they sprawl and produce smaller leaves. Insert the moss pole at repotting time.
Is monstera toxic to cats and dogs?
Yes, mildly. All parts contain calcium oxalate crystals that cause oral irritation, drooling, and vomiting if chewed. Fatalities are rare but the AVMA recommends keeping it out of reach of curious pets.
How often should I fertilize?
Every 3–4 weeks in spring and summer with a balanced liquid fertilizer at half strength. Skip winter. Over-fertilizing causes brown leaf tips — flush with plain water if you see them.