Houseplant · Araceae
Swiss Cheese Plant
Monstera deliciosa
Hand it bright indirect light and a pole to climb, and the Swiss cheese plant pushes out big, hole-punched leaves.
Bright indirect
Every 7–14 days
61–84°F · 16–29°C
USDA 10–12
Overview
Growing a Swiss cheese plant is one of the most satisfying wins in the houseplant world. It rockets up tree trunks in the rainforests of Central America, and it brings that same climbing jungle energy straight into a room. Its huge leaves rip open into the holes and ribbons that make it so fun to grow. It runs in the arum family, right beside philodendrons and peace lilies, and it inherits their easy, forgiving streak.
Half the joy is watching the leaves transform as the plant grows up. A young monstera throws out plain, solid hearts, and then, once it matures and soaks up enough light, the famous fenestrations break through. Those holes are thought to help the leaves shed heavy rain and pass light down to the foliage below, a clever move for something climbing under a forest canopy.
It grows fast and stays easy, so it delivers big results for a first-time grower. Park it in bright indirect light, give it a moss pole to scale, and it can shoot up to 6 to 10 feet (1.8 to 3 m) tall indoors. Keep one thing on the radar though: every part except the ripe fruit is an irritant, so set it up out of reach of pets and small children.
Care
The short version: bright indirect light, a moss pole to climb, and water only once the top of the soil dries out. Keep it warm, give it humidity, and feed it through spring and summer to keep it charging.
Light
Set it up in bright, indirect light near a window but clear of the harsh midday sun, which scorches the leaves. It shrugs off medium light and a bit of shade, but push it into a dim spot and you get small, solid leaves with no splits at all.
Water
Let the top inch or so of soil dry out before you water again, roughly every 7 to 14 days. Dial it back through fall and winter as growth slows. Soggy soil rots the roots faster than anything, so lean to the dry side and it powers on.
Soil
Pot it in a rich, well-drained mix with peat and plenty of structure so water races through freely. A pH between 5.5 and 7.0 suits it, and that airy mix keeps the roots from sitting wet.
Temperature
Hold it between 61°F and 84°F (16°C to 29°C), the warm range of an ordinary home. It hates cold drafts and will not take frost, so shift it away from chilly windows in winter.
Humidity
This rainforest climber craves high humidity, and dry indoor air leaves the leaf edges brown and crisp. Group it with other plants, run a humidifier nearby, or stand it on a pebble tray to crank up the moisture around it.
Feeding
Feed it monthly through spring and summer with a balanced liquid fertilizer while it is charging ahead. Stop in fall and winter when it rests, since feeding a dormant plant just piles up salt in the soil.
Pruning
Prune in spring to shape the plant or bring it back to size. The aerial roots can climb a moss pole, dive into the soil, or get trimmed off cleanly, whichever look you are chasing.
Repotting
Repot every 1 to 2 years in spring, bumping up one pot size when roots circle the bottom or push out the drainage holes. Slowed growth and water that drains straight through are the other tells it has outgrown its home.
Size & spacing
Indoors it scales to 6 to 10 feet (1.8 to 3 m) tall and spreads 3 to 8 feet (90 to 250 cm) wide, so hand it real room. A sturdy moss pole drives that growth upward and keeps the heavy stems from snapping.
Troubleshooting
Almost every monstera hiccup circles back to watering or light, and the plant flags it early if you keep an eye on the leaves. Spot what matches below, track down the cause, and jump on it before it spreads.
Wilting plant with dark, mushy roots
A monstera that wilts even though its soil is wet is battling root rot, brought on by overwatering or a mix that holds too much water. Pop the plant out, cut away any soft, blackened roots, and repot into fresh, free-draining soil. Water less often from there and the plant bounces back.
Fix:
- Unpot and trim rotten roots
- Repot in fresh draining mix
- Reduce watering
Lower leaves turning yellow
When several older, lower leaves flip yellow at once and the soil feels soggy, the cause is almost always overwatering or a pot that drains too slowly. Let the top of the soil dry before you water again, and make sure the pot can actually drain. A plant left sitting in wet soil charges toward root rot, so jump on it early.
Fix:
- Reduce watering frequency
- Let top soil dry
- Ensure pot drains freely
Fine webbing and speckled leaves
Faint webbing and a dusty, stippled look on the leaves flag spider mites, which explode when the air turns hot and dry. Rinse the foliage off, drive the humidity up to make the plant a poor host, and hit them with insecticidal soap if they cling on. Scouting the undersides of the leaves often nabs them early.
Fix:
- Rinse foliage
- Raise humidity
- Apply insecticidal soap
Brown dots crusting the stems and leaving sticky gloss
Small brown bumps gripping the stems, often over a sticky film, are scale insects feeding on the sap. Scrape or wipe them off, then coat the plant with horticultural oil to smother any you missed. Most hitch in on a new plant, so scout any newcomer before it joins the rest.
Fix:
- Wipe off scale
- Apply horticultural oil
Growth spilling sideways with no upward climb
Out in the wild a monstera climbs, so indoors it flops and sprawls when it has nothing to grip. Drop a moss pole or trellis into the pot and steer the aerial roots onto it. Doing this early keeps the stems upright and saves them from snapping under their own weight.
Fix:
- Add moss pole or trellis
- Train aerial roots onto support
Leaf surfaces sprouting white fluff or turning sticky
White cottony tufts or a sticky residue mean mealybugs, aphids, or thrips have moved in. Wipe the leaves clean and follow up with insecticidal soap, hammering away until the pests are gone. Keep any new plant apart for a couple of weeks and scout it over, since that is how most infestations kick off.
Fix:
- Wipe leaves
- Apply insecticidal soap
No splits in sight, each leaf still solid
Two things drive this, and the first is simply youth. A young monstera pumps out solid, heart-shaped leaves and only kicks into splitting once it matures, so give it time to get there. The other cause is too little light, so shift it somewhere bright but out of direct sun and give it a pole to climb, which fires up the splits faster.
Fix:
- Move to bright indirect light
- Allow plant to mature
- Add climbing support
Brown, crispy edges along the leaves
Dry indoor air is the usual culprit, and low humidity leaves the margins brittle and brown. Salt left behind by fertilizer pulls the same trick. Crank up the humidity around the plant, and flush the pot through with plenty of plain water now and then to wash those salts out.
Fix:
- Raise humidity
- Flush soil to leach salts
Toxicity
This is a plant to perch up out of reach. Every part except the fully ripe fruit packs insoluble calcium oxalate crystals that burn the mouth and throat the second they are chewed. A bite can hurt pets, livestock, and children, and even the sap can sting skin and eyes, so wash your hands once you have finished handling it.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Moderate
A cat that bites a leaf hits a fast, painful burning in the mouth, then drools, paws at its face, and may vomit. The tongue and lips can swell enough to make swallowing hard.
Dogs Moderate
Contact stings straight away, so a chewing dog quickly shows drool, pawing around the muzzle, and retching. Watch for swollen lips and tongue next.
Horses Moderate
The crystals set a horse drooling heavily and bring clear discomfort through mouth and gut alike. Thankfully the bitterness convinces most horses to drop the leaves before taking in much.
Rabbits Moderate
Sharp oxalate crystals turn any rabbit nibble into a painful mistake, leaving a sore mouth and a bunny that turns its nose up at food. Park the plant far beyond hopping range.
Livestock Moderate
One mouthful of foliage gives a grazing animal that burning sting plus a rush of drool, and the nasty flavor typically shuts down grazing right there.
Birds Caution
Give a pet bird zero access here, since a nibbled leaf brings on that familiar mouth irritation. Cages and perches belong in another corner entirely.
People Caution
Bite into anything but the fully ripened fruit and mouth and throat pay for it with a fierce burn, green fruit included. Ripe fruit alone earns a pass, so stash foliage and unripe fruit beyond kids' reach.
Sap may irritate skin and eyes; wash hands after handling
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
Past the classic green plant waits a lineup of prized variegated forms that collectors chase. These are the ones worth knowing by name.
'Thai Constellation'
Raised from tissue culture so its creamy white streaks lock in, this cultivar scatters deep green leaves with constellation-like flecks and climbs a touch slower than the plain species.
'Albo-Variegata'
Its bold white and cream patches spring from an unstable chimera, so the markings jump leaf to leaf and the foliage runs a little smaller than the species.
'Variegata'
This name sweeps up variegated forms of every stripe, all sporting patterned leaves that come in a bit under the size the species manages.
var. borsigiana
Trim and compact next to the standard form, it carried its own varietal name for years, yet botanists now fold it into Monstera deliciosa as one and the same plant.
How to propagate
Here is where it gets really rewarding: this plant multiplies with almost no effort, so one healthy specimen can hand you several more for free. Two methods cover nearly every case.
Stem cuttingsEasy
Spring to summer · 4-8 weeks to root
Cuttings are the fast track to new plants, and spring through summer is prime time to take them. Cut a section that includes at least one node, ideally just below an aerial root, then stand it in water or push it into a moist mix. Give it 4 to 8 weeks and fresh roots take hold.
Air layeringModerate
Growing season · 6-8 weeks
Air-layering asks for more patience but pays off nicely during the growing season. Wrap a fistful of moist sphagnum moss around a node that has an aerial root and keep it damp until roots push into the moss, which takes about 6 to 8 weeks. Once they have formed, cut the rooted section free and pot it up.
Myths
The monstera is a kind of philodendron.
The old trade name split-leaf philodendron sticks around, but it misses the mark. Monstera deliciosa belongs to the genus Monstera, not Philodendron, though both run in the arum family Araceae and look alike at a glance.
Misting the leaves makes them split.
Spraying water on the foliage does zero to trigger the famous holes. Those splits, called fenestrations, come with age and good light as the plant matures, not from any amount of misting.
Aerial roots should always be cut off.
Those thick roots reaching out from the stem are perfectly normal, and the plant uses them to climb. Train them onto a moss pole or tuck them into the soil, or trim them back if you prefer, since removing them does no harm.
Monstera fruit is poisonous.
The fear is half right, which is exactly what trips people up. Only the unripe fruit irritates the mouth because of calcium oxalate crystals, while the fully ripe fruit is safe and tastes of banana and pineapple.
More leaf splits always signal a stronger plant.
Holes flag age and light, not good nutrition. A well-fed plant in dim light can stay solid-leaved, so judge its health by overall growth and color rather than counting splits.
Variegated types thrive on whatever routine suits an all-green plant.
The white parts of a variegated leaf hold no chlorophyll, so the plant has less to work with. Give it brighter light and expect slower growth, because it simply cannot power itself the way an all-green plant can.
Sources
- ASPCA Animal Poison Control
- NC State Extension Plant Toolbox
- Missouri Botanical Garden Plant Finder
- Wisconsin Horticulture, UW-Madison Extension
- University of Florida IFAS Extension
- Hawaii-Pacific Weed Risk Assessment (CGAPS / Invasive Species Committees)
- Royal Horticultural Society
- Royal Horticultural Society