Short answer
The rule, in plain terms
Monstera deliciosa is a tropical climbing plant from Central America. Two plant references agree on the basic pattern but word it differently:
- The Missouri Botanical Garden says to water regularly in the growing season, "allowing soils to dry some between waterings", and to reduce watering from autumn to late winter.
- NC State Extension is more specific. Water thoroughly, then let the top quarter to one-third of the soil dry before watering again.
So a monstera sits in the middle of the houseplant range. It does not want to dry out completely like a succulent, and it does not want to stay wet like a fern. In a pot 20 cm (8 inches) deep, a quarter to a third is roughly the top 5 to 7 cm (about 2 to 3 inches).
The 7 to 14 days in the answer above is a rough range, not a rule. Oklahoma State University Extension gives the general houseplant picture: small pots may need water every two to three days, while large pots may go seven to fourteen days. Monsteras are usually in larger pots, so they tend to fall toward the longer end.
Finger test and weight test
Finger test. Push a finger into the soil near the edge of the pot. If the top few centimetres are dry and the soil below still feels slightly cool and damp, you are close. For a big pot, a wooden chopstick pushed down and pulled out works better than a finger. Damp soil clings to it.
Weight test. The University of Maryland Extension suggests lifting the pot to feel its weight change. A pot with dry mix weighs much less than one that still holds water. This is harder with a large monstera, but even tipping the pot slightly tells you a lot once you know what "just watered" feels like.
When it is time, water until it runs out of the drainage hole and empty the saucer. Maryland Extension says plainly never to let houseplants sit in water. More detail on the method is in schedule or check the soil.
Plant Watering Reminder & Care
Reminds you to water each plant on its own schedule and keeps a care log for every plant.
Get it on Google PlayIn Plant Care you set the monstera's interval in days and the plant screen shows the date of its next reminder. Use that reminder as the day you do the finger test. If the soil is still damp, wait and test again in a day or two, and change the interval if this keeps happening.
Water less in autumn and winter
The Missouri Botanical Garden advises reducing watering from autumn to late winter, when days are short. Lower light means slower growth, and slower growth means the soil stays damp for longer.
There is one complication. Central heating dries indoor air, and a pot near a radiator can dry faster than you expect. That is why winter is the season to check more and assume less. The guide on watering indoor plants in winter goes through this for all houseplants.
NC State gives a preferred temperature range of 16 to 29°C (60 to 85°F). A cold windowsill in winter can sit below that, and a cold, wet pot is the worst combination for roots.
After repotting
NC State suggests repotting monsteras in spring if needed. None of the sources used here gives a specific watering routine for the weeks after repotting, so treat these as cautious general points rather than rules:
- Do not oversize the pot. UNH Extension advises that roots should ideally reach the edges of the container without being pot-bound. A much larger pot holds a lot of soil the roots cannot reach yet, and that soil stays wet.
- Go back to the same rule straight away. Water thoroughly, then let the top quarter to third dry before the next watering, rather than topping up because the plant looks unsettled.
- Expect the pace to change. Fresh mix and a bigger pot usually dry more slowly than the old root-bound pot, so a monstera that needed water every week may now go longer.
Yellow leaves are a symptom, not a schedule
Yellow leaves are the most common reason people look up monstera watering, and they are worth reading carefully. Oklahoma State University Extension lists the usual causes of yellow, dropping leaves as too much water, low humidity, poor drainage, tight soil mixes or temperature shock. It also notes that a plant moved from a greenhouse into a home often yellows while it adjusts.
Overwatering leads that list, but it is not the only cause. Check the soil before you change anything:
- Soil wet, lower leaves yellowing: likely too much water or poor drainage. Let it dry further and check the drainage hole.
- Soil bone dry, leaves limp or crisp at the edges: likely too little water.
- Soil fine, plant recently moved or by a draughty door: likely shock or cold.
One or two old leaves at the base yellowing slowly is normal ageing. Several leaves yellowing at once is a signal to investigate. The full comparison is in overwatered vs underwatered plant.
Light and humidity change the answer too
The Missouri Botanical Garden describes the monstera as a plant for warm, bright, humid spots, with bright indoor light but no strong direct sun. A monstera in good light grows faster and drinks faster. One in a dim corner grows slowly and its soil stays wet much longer, so the same watering routine can be fine in one room and too much in another.
If you move the plant to a new spot, expect the timing to shift and go back to checking the soil more often for a few weeks.
A reminder as a rhythm, not an order
The useful part of a reminder is that it makes you look. A monstera rarely gets into trouble in a single week. Problems build up when watering is either forgotten for a long stretch or done on autopilot regardless of the soil. A regular check, followed by a decision based on what you find, avoids both.
