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Monstera deliciosa — also called the Swiss Cheese Plant — is one of the most popular houseplants in the world, but before any care advice the most important thing to know is whether it belongs in a house with pets. We’re going to start there.
⚠ Pet warning — toxic to dogs and cats.
Per the ASPCA, Monstera deliciosa is toxic to both dogs and cats. The toxic principle is insoluble calcium oxalates, and reported clinical signs include “oral irritation, intense burning and irritation of mouth, tongue and lips, excessive drooling, vomiting, difficulty swallowing” (ASPCA, “Swiss Cheese Plant”). If you have a pet that chews leaves, keep this plant out of reach or choose a verified non-toxic species instead — always cross-check the ASPCA database before bringing home a new plant.
Light
NC State Extension’s care guidance is “moderate brightness but not direct sunlight”, with variegated cultivars needing more light than the darker green forms (NC State Extension). In practical terms: a bright spot a few feet back from a south or west window, or right next to an east window, is the typical sweet spot. Hard, hot direct sun bleaches and burns the leaves; deep shadow stalls growth and stops the fenestrations (the famous holes and splits) from developing on new leaves.
For the bigger picture of what “bright indirect” actually means, see houseplant light requirements.
Water
NC State’s rule is direct: “water thoroughly, then allow the top quarter to one-third part to dry between watering” (NC State Extension). Stick a finger into the top inch or two of mix — if it still feels damp, wait. If it’s dry, water until water drains freely from the bottom holes, then empty the saucer so the pot isn’t standing in water.
This is where most Monsteras die. If your leaves are going yellow on otherwise healthy growth, or drooping limp with wet soil — see overwatering vs underwatering and the root rot guide before doing anything else.
Soil
NC State describes the preferred conditions as high organic matter with good drainage and “loam (silt)” (NC State Extension). A standard houseplant mix that holds moisture but drains freely is fine; if you mix your own, see the soil-mix guide.
Temperature and humidity
NC State’s range is “average warm temperature of 60 to 85 degrees F”, and the plant prefers high humidity — a humidifier or a wet-pebble tray helps in dry indoor air (NC State Extension). Cold drafts and the air right next to a heating vent both stress it; pull it away from those if you can.
If you’re seeing brown leaf tips, dry air is one of the usual suspects.
Fertilizing
A balanced houseplant feed during active growth (spring–summer) is enough. Don’t fertilise a stressed or freshly repotted plant. The general schedule is in our fertilizing guide.
Repotting
Monsteras grow vigorously when conditions are right and become pot-bound faster than you’d guess. The signs and the right time of year are in when and how to repot a houseplant.
Propagation
NC State lists “layering or stem cutting” as the propagation methods (NC State Extension). Water propagation works for Monstera in general houseplant practice; the step-by-step on how to take and root a stem cutting is in how to propagate houseplants in water. (Water-propagation specifics for Monstera are general practice; NC State covers the method names but not the water specifics.)
Common problems
NC State notes the plant has “no significant problems” in its general listing, with fern scale flagged as a potential pest (NC State Extension). In practice the problems we see most often on Monstera are environmental — wrong watering, not enough light, dry indoor air — not pest outbreaks. Cross-check the Troubleshooting hub and the Pests hub before treating anything.
Mature size indoors
NC State gives an indoor expectation of “6 to 8 feet” (NC State Extension). It climbs in the wild and benefits from a moss pole indoors once stems begin to lean.