Water your Monstera Adansonii (Monstera adansonii) every 1–2 weeks, letting the top 2–3 inches of soil dry out between waterings. That is the short answer: check the soil first, and water when the soil tells you to, not because a particular day of the week has arrived.
Monstera Adansonii, the Swiss cheese vine, is a fast-growing climber with thinner, heavily holed leaves that are much more delicate than a deliciosa's. It trails or climbs readily, and its thinner leaves lose moisture faster, so it notices a missed watering sooner than its big cousin does.
Monstera Adansonii at a glance
| Care factor | What this plant needs |
|---|---|
| Botanical name | Monstera adansonii |
| Light | bright indirect |
| Water | every 1–2 weeks; let top 2–3 inches of soil dry |
| Humidity | moderate to high |
| Temperature | 65–85°F |
| Repotting | every 2–3 years |
| Pet safety | toxic to cats and dogs |
How to check whether it needs water
Push your finger 2–3 inches into the potting mix: if the soil at that depth feels damp, wait; if it feels dry, water. Check in two or three spots, because soil dries unevenly — the side facing the window dries first and the centre of the root ball dries last. Never judge by the surface alone: the top can look bone dry while the roots below are still sitting in damp mix.
Check the top 2–3 inches of soil with your finger, and also look at the leaves: adansonii's thin foliage droops visibly within a day or two of the soil drying out completely. A moisture meter pushed halfway down the pot is useful here, because the top can dry while the root ball is still damp — and this plant rots quickly if you water on the surface reading alone.
A moisture meter pushed halfway down the pot removes the guesswork in larger pots, and so does the weight of the pot — lift it just after watering, then again a few days later. A pot that feels surprisingly light needs water even if the surface still looks dark. Our watering calculator can give you a starting point for your pot size.
Watering through the seasons
Monstera Adansonii grows in spring and summer and rests in autumn and winter, and its thirst follows that rhythm: in the growing season it uses water faster and you will water at the shorter end of the every 1–2 week range.
Adansonii grows fast in spring and summer and can need water weekly in a warm, bright room, particularly if it is climbing a moss pole that wicks moisture away. In winter it slows down and the interval stretches towards two weeks; cold, wet soil is the main winter risk, so keep it warm as well as drier.
In winter, growth nearly stops and the same pot that dried in a week in July can take two weeks or more to dry in January. The danger in winter is cold, wet soil — water sitting in a cold pot is what rots roots. Keep the plant in its 65–85°F comfort range, away from cold windows and draughts.
What changes how often you water
Pot, light, humidity and temperature change the interval more than anything else. A small pot dries far faster than a large one, terracotta dries the mix faster than plastic or glazed ceramic, and a chunky, bark-heavy mix drains and dries faster than dense, peat-based soil. A plant in bright indirect light uses water steadily, while the same plant in a dim corner grows slowly and the soil stays wet far longer — and Monstera Adansonii likes moderate to high humidity, which slows evaporation and stretches the interval.
Growth habit changes the timing: a climbing adansonii on a pole drinks faster than the same plant trailing from a hanging basket, because the pole and the extra airflow around the leaves dry things out. Small pots dry out in days in summer, while a large floor pot can stay damp for a fortnight. Bright indirect light speeds drying; a shadier spot slows it.
Signs of overwatering
Overwatering is the most common way to kill a Monstera Adansonii, and it is almost always a watering-too-often problem rather than a watering-too-much-at-once problem: the soil stays wet, air is pushed out of the mix, and the roots suffocate and rot. The data lists these problems for this plant: brown leaf edges (low humidity or salts in water); no fenestrations (not enough bright light or young plant); root rot (soggy soil).
Brown leaf edges are this plant's warning sign — the data lists them first, caused by low humidity or salts in water — and they appear alongside yellowing when the soil stays wet. Root rot from soggy soil is also listed, and it shows as leaves yellowing from the base upward and stems turning soft and dark at soil level.
A musty or sour smell from the soil, fungus gnats around the pot, and leaves that feel soft and limp on wet soil are further signs. If you catch it early, stop watering and let the pot dry out; if the roots are soft and dark, cut away the rotted roots and repot in fresh, dry, free-draining mix.
Signs of underwatering
Underwatering is less dangerous than overwatering, because a thirsty plant usually recovers from a good soak. The first sign is drooping: leaves go limp and lose their gloss. Next come brown, crispy leaf edges and tips, older leaves yellowing and dropping, and soil shrinking away from the sides of the pot.
An underwatered adansonii droops dramatically, its thin leaves curling inward and crisping at the edges. The holes in the leaves make the damage easy to see: brown, papery patches spread from the edges of the fenestrations. A good soak usually revives it within a day, but leaves that have crisped will not heal.
To revive it, water thoroughly until water runs from the drainage holes — or stand the pot in a basin of water for twenty minutes if the mix has shrunk and water is running around the edges. Then return to checking the soil and watering deeply when the top is dry, rather than watering little and often.
How to water it properly
When the soil check says it is time, water thoroughly: pour slowly and evenly until water runs freely from the drainage holes, then empty the saucer so the plant never sits in standing water. Bottom watering works too — stand the pot in a few centimetres of water for fifteen to twenty minutes, then let it drain — and it is useful when the mix has dried out or you want to keep water off delicate leaves. Either way, the pot must have drainage holes, and use room-temperature water, since very cold water can shock tropical roots and hard tap water leaves salts that brown the leaf edges. Our humidity and temperature checker can tell you whether your room suits this plant.
Frequently asked questions
Can I water my Monstera Adansonii on a fixed weekly schedule?
No — use the soil, not the calendar. Every 1–2 weeks is the average, but a warm, bright room in July and a cool, dim room in January are different worlds. Check the top soil before every watering, and water when it is dry.
How do I know if I have overwatered my Monstera Adansonii?
Check the soil first: if it is wet and the leaves are yellowing, soft or dropping, overwatering is the likely cause. The plant's listed problems are brown leaf edges (low humidity or salts in water); no fenestrations (not enough bright light or young plant); root rot (soggy soil). Let the pot dry out completely and check the roots for soft, dark, rotted sections if several leaves yellow at once.
Should I mist my Monstera Adansonii instead of watering it?
No. Misting wets the leaves for a few minutes and does almost nothing for the roots, which is where the plant drinks. Monstera Adansonii likes moderate to high humidity — a humidifier or a pebble tray helps far more than misting, and wet leaves can invite fungal problems.
Can I bottom-water my Monstera Adansonii?
Yes. Stand the pot in a few centimetres of room-temperature water for fifteen to twenty minutes, then lift it out and let it drain fully. Do not leave it standing in water for hours, and still top-water occasionally to flush salts out of the mix.
Should I keep my Monstera Adansonii's moss pole wet?
A damp moss pole encourages aerial roots to grip and grow, but the pole is not the pot: wetting the pole does not replace watering the soil. Water the soil every 1–2 weeks when the top 2–3 inches are dry, and mist or pour a little water over the pole separately if you want the aerial roots to attach. Never let the pot sit in water just to keep the pole damp.