How to Know When to Water Your Indoor Plants (And Stop Killing Them With Kindness)

If there's one question I get asked more than any other — and I mean any other — it's this:

"How do I know when to water my plants?"

It comes up constantly. From brand new plant parents who've just brought home their first pothos, to people with collections of 50+ plants who've been at it for years. And honestly? It makes complete sense that it's confusing. Because the advice out there is all over the place.

Water once a week. Water every three days. Mist daily. Don't mist at all. Water in the morning. Water at night.

No wonder people are overwhelmed.

Here's the truth: there is no universal watering schedule. And the sooner you let go of the idea of one, the better your plants will do. What your plants need is for you to check before you water — every single time — rather than following a calendar. Once that clicks, everything changes.

Let me show you exactly how.

The Only Watering Rule You Actually Need

Before you water anything — anything at all — do this:

Push your finger about 2cm into the soil.

Still moist? Put the watering can down and come back tomorrow.

Dry? Time for a drink.

That's it. That's the rule. It sounds almost insultingly simple but this single habit is the difference between plants that struggle and plants that thrive. Your soil is telling you exactly what it needs — you just have to ask it.

Why Schedules Don't Work

The problem with watering on a fixed schedule is that your plants' needs change constantly based on things a calendar can't account for:

Season — plants grow actively in spring and summer and slow right down in autumn and winter. A plant that needs water every 5 days in January might only need water every 12-14 days in July
Temperature — a hot week means soil dries out faster. A cool, overcast stretch and the soil stays wet for much longer
Pot size and material — terracotta pots breathe and dry out faster than plastic or glazed pots. A small pot dries out faster than a large one
Light levels — a plant in bright indirect light is growing faster and drinking more than the same plant in a darker corner
Humidity — in a humid bathroom, soil stays moist longer than in a dry, heated living room in winter

A schedule ignores all of this. Checking the soil accounts for all of it automatically.

How to Read Your Plants

Beyond the finger test, your plants are constantly communicating with you. Here's what they're saying:

Drooping or wilting leaves This is the most common distress signal — but here's the catch: both overwatering and underwatering cause drooping. This is why you always check the soil first before reaching for the watering can. Drooping + dry soil = thirsty. Drooping + moist soil = likely overwatered and roots are struggling.

Yellow leaves Usually a sign of too much water, especially if the yellowing is soft and mushy at the base. Yellow leaves on an otherwise healthy plant that's drying out properly are more likely a natural shedding of older leaves.

Crispy brown tips or edges Typically underwatering or low humidity — the plant is losing moisture faster than it can replace it. Check your watering frequency and consider whether a heater or air conditioner nearby might be drying the air out.

Soggy, dark soil that never dries You're watering too frequently, your pot has poor drainage, or both. This is the most common way indoor plants die — root rot sets in silently and by the time you notice the plant is struggling, the roots are already damaged.

Bone dry soil pulling away from the edges of the pot Your plant is very thirsty and possibly been underwatered for a while. Give it a thorough drink and consider increasing your checking frequency.

The Lift Test — A Game Changer

Once you've had your plants for a little while, try this: lift the pot before and after watering.

A light pot = dry soil, time to water. A heavy pot = still has moisture, leave it alone.

Over time you develop an instinct for exactly how light each of your pots feels when they're ready for water. It becomes completely automatic and means you can do a quick check of your whole collection without getting your hands dirty every single time.

Different Plants, Different Rules

While the finger test works universally, it helps to know roughly what each type of plant is looking for:

Tropical plants (monsteras, pothos, peace lilies, philodendrons) Let the top half of the soil dry out before watering again. They like moisture but hate sitting in soggy soil. These are your most forgiving plants — they'll droop dramatically to tell you they're thirsty but bounce back quickly once watered.

Succulents and cacti Let the soil dry out completely — then wait a couple of extra days on top of that. These plants store water in their leaves and stems and genuinely thrive on what feels like neglect. When in doubt, don't water.

Ferns, calatheas and humidity lovers These like to stay more consistently moist. Don't let them dry out completely — the top centimetre can dry but the soil below should stay lightly damp. They also appreciate higher humidity, especially in winter.

Orchids Water thoroughly once a week in warmer months and fortnightly in winter. Always let them drain completely and never let them sit in water. Check the roots — silvery grey means thirsty, bright green means there's still moisture.

Snake plants and ZZ plants These are the most drought-tolerant indoor plants you can own. Let the soil dry out completely and then some. They would genuinely rather you forgot about them for three weeks than watered them too often.

How to Water Properly When You Do Water

This part matters just as much as the timing. A lot of plant parents either underwater (a quick splash that barely reaches the roots) or overwater (watering too frequently rather than deeply).

The right approach:

Water slowly and thoroughly until water runs freely out of the drainage hole at the bottom
This encourages roots to grow deep and strong as they follow the moisture downward
Then leave it completely alone until the soil has dried out to the appropriate level for that plant
Always make sure your pot has drainage holes — without them, water sits at the bottom and silently rots the roots no matter how carefully you water

Deep and infrequent beats shallow and frequent every single time.

Seasonal Watering — The Adjustment Most People Miss

This is where a lot of plant parents go wrong in winter. As temperatures drop and growth slows, your plants simply don't need as much water. Soil also takes much longer to dry out in cooler conditions.

A rough guide for most tropical indoor plants:

Spring and summer — check every 3-4 days, water when the top half is dry
Autumn — start extending the gap, check every 5-6 days
Winter — check weekly, water far less frequently than you think you need to

If you're heading into winter and your watering frequency hasn't changed from summer, that's almost certainly going to cause problems.

A Note From Emily

Watering questions make up a huge chunk of the messages I receive from our uBloomd community — and I love every single one of them because it tells me people genuinely care about their plants. The ones who ask are the ones whose plants thrive.

After all the conversations I've had, I'm convinced that the finger test and the lift test together will solve 90% of watering struggles for most plant parents. Give it two weeks of consistently checking before you water and I promise you'll start to feel the difference — in your plants and in your confidence.

You've got this 💧

Our Support Brew is a natural neem-based soil conditioner that supports root health and helps your plants handle the ups and downs of watering more resiliently. A monthly soil drench keeps roots strong and happy all year round — shop our full range at ubloomd.com