How often to water indoor plants depends on the plant and the moisture in its pot. Many indoor plants need the top 3cm of mix to dry first; others prefer a drier or more evenly moist root zone. In cooler conditions, the gaps often lengthen. Below: how to check and adjust.
How do you know when an indoor plant needs water?
Push a finger 3cm into the mix. Damp means wait; dry means water. That’s the entire test, and it’s the instruction printed on most of the care cards we send out with our plants: water moderately, allow the top 3cm of soil to dry.
When to water indoor plants comes down to the pot, not the calendar, because a pot doesn’t dry on a fixed clock. Season, room, pot size and the plant itself all change the pace, and the same Monstera can need water twice as often in January as it does in July.
Don’t wait for the plant to ask, either. A limp leaf can mean too wet just as easily as too dry, so treat a droop as a prompt to check the mix, never as a trigger to pour.
How often should you water indoor plants in winter?
Often less frequently, but there is no reliable rule to halve watering. Cooler temperatures and lower light can slow drying; heaters, small pots and active growth can change that. Keep checking each pot against its plant’s needs.
The check-first routine absorbs this on its own. The top 3cm takes longer to dry, the finger says wait more often, and the interval stretches without you deciding anything.
The trouble is habit. A watering can that came out every Sunday through summer tends to keep coming out every Sunday, and the pot never gets its chance to dry, which is why winter, not summer, is when overwatering does its worst.
If you take one thing from this page: keep checking all winter, and let the answer be no.
Most of our range would rather miss a drink than sit in a wet pot. The Cowboy Cactus card says it plainest:
“Park me in a sunny spot and water me sparingly; I’d rather be too dry than too wet.” (from our Cowboy Cactus care card)
Does it matter where in Australia you live?
Yes, though it changes how fast the pot dries rather than what the plant wants. In Brisbane and the subtropics, humidity keeps mix damp for days after a watering, so the gaps run longer than a schedule would allow and a soggy pot, not a thirsty plant, is the local failure mode.
Melbourne and Adelaide winters pose the opposite trap. The mix dries slowly there too, but the real constraint is light: short grey days mean the plant is barely growing and barely drinking, and a spot that worked in January can be both too dark and too wet by July. Move the plant closer to the glass before you reach for the can.
A watering rhythm by plant group
Our care cards use three watering instructions across the whole range. The finger test still decides the day in every band; the band just tells you how often the answer is likely to be yes.
| The card says | Water again when | In practice | Plants in this band |
|---|---|---|---|
| “Water sparingly, soil to be almost dry” | The mix is nearly dry right through, and if in doubt, wait | The longest gaps in the house | Devil’s Ivy, Marble Queen Pothos, Baby Rubber Plant |
| “Water moderately, allow the top 3cm of soil to dry” | The top 3cm is dry, still slightly damp below | The middle band, where most of our range sits | Monstera Deliciosa, Peace Lily, Fiddle Leaf Fig |
| “Water generously when surface of soil is dry” | Only the surface has dried | The shortest gaps; the mix stays lightly moist | Elephant Ear, Autograph Tree (we’re between crops on both right now) |
So what does “how often” actually mean in practice? Schedule the checking, not the watering: walk the pots with a finger twice a week in the warm months and once a week over winter, and water only the ones that pass. The plants set the frequency; you just keep the appointments.
What changes how fast a pot dries out?
Four things, mostly, and they explain why two identical plants in one room can run on completely different rhythms.
- Light and warmth. The brighter and warmer the position, the harder the plant works and the sooner the pot dries. The same plant moved a metre back from the window can slow noticeably.
- Pot size. A small pot holds less mix and dries in a fraction of the time, which is why the windowsill pots always ask before the floor pots do.
- Mix and drainage. Check whether the pot drains freely and whether the root zone stays saturated. Slow drying alone does not prove the plant needs repotting. Read when to repot indoor plants before changing pots.
- Moving air. Heaters and air-conditioning both dry a room out, so a pot parked near either can dry faster in July than it did in spring.
What does a good watering actually look like?
A soak, not a splash. When the test says yes, water slowly until it runs freely from the drainage hole, so the whole root ball gets a drink rather than just the top few centimetres. A splash wets the surface and fools the finger test, while the roots underneath stay dry.
Then let the pot finish draining and empty the saucer within half an hour. A plant left standing in its own runoff undoes the whole routine, and a permanently full saucer is how root rot gets started.
That’s the entire watering day: check every pot, soak the ones that pass, empty the saucers.
If a plant already looks sorry for itself, watering may not be the fix it needs. Start at Plant First Aid, our index of symptoms and fixes.
What we keep on the shelf for this
Two things earn a place in this routine. A 4-in-1 smart sensor reads moisture below the surface, where the finger test runs out of finger, and settles the argument in deep floor pots. And pot choice is part of the routine, because none of this works if water has nowhere to go. Our Jardin terrazzo pots are sized to the nursery pot a plant arrives in, small through to x-large, so the plant keeps the pot that drains while the terrazzo does the looking-good. Whichever outer pot you use, don’t leave it holding water after a soak.
Everything we send is dispatched from our Queensland nursery in low-waste, plastic-free packaging, typically 3–5 business days of courier transit to most metro areas after dispatch, plus packing time.
Indoor plant watering FAQs
Should you water indoor plants from the top or the bottom?
Top watering is the default: a slow soak until water runs from the drainage hole, then empty the saucer. Bottom-watering, standing the pot in a few centimetres of water to draw up from below, is a useful switch when the surface stays too wet, but it waters the same amount either way. The finger test still decides when.
Is it better to underwater or overwater indoor plants?
Neither is good, but most indoor plants forgive a missed watering far more readily than a wet pot. A thirsty plant usually bounces back after a proper soak; a waterlogged one has a much harder road back. When you’re not sure, wait, check again in a couple of days, and let the top 3cm make the call.
Does misting count as watering?
No. Misting wets the leaves and briefly raises the humidity around them, but almost none of it reaches the roots, which is where the plant actually drinks. Water the mix on the finger test and treat humidity as a separate job: our guide to increasing humidity for plants covers the tools that work better than a mister.
The Good Plant Co nursery team · our roots · Last updated 12 September 2026