How much light does a Monstera need?
Light weighs more than anything else in a Monstera’s life: it decides how much it grows, what leaves it makes and how often it needs water. Here’s what it wants, and what it tolerates.
A Monstera needs plenty of bright, indirect light: near a bright window, without catching midday direct sun. It tolerates low light, but grows slowly and tends to make smaller leaves with fewer holes. A little gentle morning sun is usually tolerated; midday sun through glass burns.
What does indirect light actually mean?
A Monstera (Monstera deliciosa) grows in the shade of taller trees, where plenty of light arrives, but filtered: much of it comes as flecks of sun passing between the tree leaves. At home, indirect light is strong light in a spot where the sun doesn’t hit the leaf directly: next to a window with a sheer curtain, or a metre or two back from a south-facing window.
A rule of thumb, not a measurement: if you can read without turning a lamp on and your hand’s shadow is clear but soft, the light is usually good.
How much light is there in each spot?
| Spot | Light | What happens |
|---|---|---|
| Next to an east-facing window | Strong and gentle | Ideal: grows well |
| Near a south-facing window, with a curtain | Strong and filtered | Grows well |
| South-facing window, no curtain | Strong and direct | Can burn at midday |
| North-facing window | Low | Grows slowly |
| No window | Very low | Survives only a short while and stretches |
Can a Monstera live in low light?
It lives, but it doesn’t thrive. In low light the plant saves energy: it grows slowly, stretches its stem (it goes leggy) and makes small, whole leaves without the splits that give it its name: when light is insufficient, the holes tend not to form. And there’s a knock-on effect for watering: the soil takes far longer to dry, and too much water is what kills it most. The same pot and plant, in July:
| Where it lives | In July | In January |
|---|---|---|
| South- or west-facing window | 5 days | 7 days |
| East-facing window | 6 days | 8 days |
| North-facing window | 9 days | 13 days |
| Hallway or corner with no window | 13 days | 18 days |
If your whole home is short on light, there are plants that do better there.
Is direct sun bad for a Monstera?
Midday sun is, even through glass: it scorches the leaf. The patches are dry, pale or brown, on the side facing the window. A little morning sun, which is gentler, is usually tolerated, and so is the low winter sun; not every guide agrees on this, and the safe rule is to avoid strong sun. If your plant has patches, the brown-leaves guide helps you find the cause.
Can I use a grow light?
A full-spectrum grow light can make up for a missing window, though it gives less than daylight. Follow the maker’s advice on distance and hours per day. An ordinary household bulb gives little usable light for plants, and fluorescent light alone, with no window, usually isn’t enough for the holes to appear.
What are the signs of the wrong light?
- Too little light: stretched stem, small leaves without splits, growth at a standstill. It’s one of the reasons a plant has no holes.
- Too much light: dry patches on the window side.
What if I only have a north-facing window?
Some guides rank the Monstera among the bright-light plants and advise keeping it away from north-facing windows; even so, it survives there. Set it right up against the glass, with nothing in the way, and expect slower growth. Go easy on the watering, because the soil will dry slowly. If you can, add a grow light.
Should I turn the pot?
A little. A Monstera leans towards the window, and a quarter turn of the pot now and then helps it grow evenly and not end up lopsided.
Does the best spot change with the season?
It can. In winter the sun is lower and weaker, so a spot that was too bright in July might be perfect in January. In summer, pull the plant back from a south-facing window or add a sheer curtain. In spring, when the light climbs again, move the plant towards the window gradually over a week or two: a sudden change can scorch the leaves.
Summary: a Monstera’s light
| Question | Answer |
|---|---|
| What light? | Plenty, indirect |
| Low light? | Tolerates it, but grows slowly |
| Direct sun? | Gentle morning sun tolerated; midday, no |
| Best spot? | Next to an east-facing window |
| No window? | Only with a grow light |
Quick questions
Can a Monstera live in a dark room? It can survive, but it will stretch and stop making split leaves. Next to a window it does far better.
Is a north-facing window enough? Enough to get by, with slow growth. Put the plant right against the glass.
Is morning sun bad for a Monstera? Usually not: it is gentler. Midday sun through glass is what burns.
Can a normal bulb replace a grow light? Usually not: it gives little usable light. A full-spectrum grow light is the option.
Light sets the pace
The more light, the more water it uses. In Verdejar, you choose the room and the light, and the app works out the right watering rhythm. All the care is in how to care for a Monstera, and the Monstera plant page lists watering for each spot at home.
Sources: Royal Horticultural Society · Missouri Botanical Garden · Royal Botanic Gardens, Kew · University of Wisconsin–Madison Extension · Penn State Extension · University of Minnesota Extension · University of Illinois Extension · Oregon State University Extension. The days between waterings come from the Verdejar watering engine.