When and How to Repot Your Indoor Plants (Without Stressing Them Out)

Repotting. It's one of those things that sounds straightforward until you're standing in front of your favourite plant with a bag of potting mix, a pile of pots in different sizes, and absolutely no idea where to start.

Do I need to repot it? Is it too soon? Too late? What soil do I use? What size pot? What if I damage the roots?

These are the questions I hear from our uBloomd community all the time — and they make complete sense, because nobody really teaches you this stuff. You just kind of wing it and hope for the best.

So let's fix that. Here's everything you need to know about repotting your indoor plants — when to do it, how to do it, and how to give your plant the best possible start in its new home.

First — Does Your Plant Actually Need Repotting?

This is the question most people skip, and it's the most important one. Repotting a plant that doesn't need it is just as stressful as never repotting at all. Plants don't need to be repotted on a schedule — they need to be repotted when they tell you they're ready.

Here's what to look for:

Your plant is definitely ready to repot if:

Roots are growing out of the drainage holes at the bottom of the pot
Roots are circling visibly around the top of the soil or pushing up above it
The pot feels rock solid — mostly root with barely any soil left
Your plant is drying out much faster than it used to after watering
Growth has slowed or stalled completely despite good light, regular watering and feeding
The plant looks top-heavy or keeps tipping over

Your plant probably doesn't need repotting yet if:

It's growing well and looking healthy
The soil dries out at a normal rate after watering
You can't see roots at the drainage holes
You repotted it less than 12 months ago

One important note: some plants actually like being a little root-bound. Peace lilies, snake plants and hoyas all bloom more readily when slightly snug in their pots. Don't rush these ones.

When Is the Best Time to Repot?

Timing matters. The best time to repot is spring — just as your plant is waking up from its winter rest and entering its active growing season. Fresh roots in fresh soil with the whole growing season ahead of them is the ideal scenario.

Avoid repotting in winter when plants are dormant — they don't have the energy to recover and establish in new soil, and you're much more likely to see transplant stress.

If your plant is in genuine distress (severely root-bound, showing signs of root rot), don't wait for spring — repot as soon as you can. An emergency repot at any time of year is better than leaving a struggling plant in the wrong conditions.

Choosing the Right New Pot

This is where a lot of well-meaning plant parents go wrong — reaching for the biggest pot they can find because surely more room is better, right?

Not quite.

Only go up one size at a time — around 2-3cm wider than the current pot. Here's why: a pot that's too large holds far more soil than the roots can absorb water from. That excess soil stays wet, oxygen can't reach the roots, and root rot sets in. It's one of the most common causes of indoor plant death and it comes from a place of wanting to give your plant more room to grow.

Always choose a pot with drainage holes. This is non-negotiable. Without drainage, water sits at the bottom of the pot regardless of how carefully you water, and the roots suffocate. If you have a beautiful decorative pot without drainage, use it as a cache pot — sit a plain nursery pot with drainage holes inside it.

Pot material matters too:

Terracotta — breathes and wicks moisture away, dries out faster. Great for plants that like to dry out between waterings: succulents, cacti, snake plants, monsteras
Plastic or glazed ceramic — holds moisture longer. Better suited to humidity-loving plants like ferns, calatheas and peace lilies
Self-watering pots — can work well for consistent moisture lovers but aren't suitable for plants that need to dry out

Choosing the Right Soil

Not all potting mix is created equal, and using the wrong one is a really common mistake.

For most tropical indoor plants (monsteras, pothos, philodendrons, peace lilies): A good quality indoor potting mix with perlite mixed through is your best all-rounder. Aim for roughly 80% potting mix to 20% perlite. The perlite improves drainage and aeration, stopping the mix from compacting and keeping roots healthy.

For succulents and cacti: Use a dedicated cacti and succulent mix, or add extra coarse sand and perlite to a regular mix. These plants need very fast-draining soil and will rot in standard potting mix.

For orchids: Orchids don't grow in soil at all — they need a bark-based orchid medium that allows their roots to breathe. Potting an orchid in regular potting mix is one of the quickest ways to kill it.

For ferns and humidity lovers: A mix with added coco coir helps retain a little more moisture while still draining well.

One universal rule: never use garden soil indoors. It compacts easily, drains poorly, and almost always introduces pests and pathogens into your home. Always use a fresh, quality indoor mix.

How to Repot — Step by Step

The day before: water your plant

Moist roots are more flexible and far less likely to snap during the repotting process. A well-hydrated plant also handles the stress of being moved better than a dry one.

Gather everything you need

Your new pot (with drainage holes)
Fresh potting mix appropriate for your plant
Perlite or other amendments if needed
Clean scissors or secateurs
A tray or newspaper to work on

Ease the plant out of its current pot

Tip the pot sideways and gently squeeze the sides if it's plastic, or run a knife around the inside edge if it's a harder material. Ease the plant out — never yank it by the stem. If it's really stuck, a gentle tap on the bottom of the pot can help.

Inspect and tidy the root ball

This is the most valuable part of the whole process. Shake off the old soil gently and take a good look at the roots.

Healthy roots are white or light tan and firm
Trim off any roots that are brown, black, mushy or smell unpleasant — these are dead or rotting and need to go. Use clean scissors and cut back to healthy tissue
If you find a lot of root rot, this is important information — it tells you the plant has been sitting in too much moisture and your watering or drainage needs adjusting going forward

Pot it up

Add a layer of fresh soil to the bottom of the new pot — enough that when you sit the plant in, the top of the root ball sits about 2cm below the rim of the pot (leaving room for watering without overflow).

Place the plant in the centre, then fill soil in around the sides, gently firming it down as you go. Don't pack it in too tightly — roots need air as much as they need water.

Water it in and settle it

Give the newly repotted plant a thorough watering until water runs from the drainage hole. This helps settle the soil around the roots and eliminates air pockets.

Then — and this is important — leave it alone. Put it in a calm spot out of direct sun for 1-2 weeks while it adjusts to its new home. Some drooping or leaf drop in the days immediately after repotting is completely normal. It's called transplant shock and it passes. Resist the urge to water again until the soil has dried appropriately.

My Favourite Post-Repotting Secret

Every single time I repot a plant, I follow the watering-in with a soil drench of our Support Brew concentrate.

The neem oil in Support Brew does something really special for freshly repotted plants — it helps the roots settle and establish in their new soil, encourages new root growth, and gives the plant a gentle nutrient boost right at the moment it needs support most. It also protects against any fungal issues that can sometimes arise when roots have been disturbed.

It's become a completely non-negotiable step in my repotting routine and I've noticed a real difference in how quickly plants bounce back and get growing again.

Common Repotting Mistakes to Avoid

Going too big with the pot — always one size up, never more
Using garden soil — always use fresh indoor potting mix
Repotting in winter — wait for spring unless it's an emergency
Not checking the roots — this is your chance to catch root rot early
Watering too soon after repotting — let the plant settle first
Repotting a plant that's already stressed — if your plant is sick, identify and fix the problem before repotting. Repotting a struggling plant adds stress on top of stress

A Note From Emily

Repotting came up again and again in our recent community survey as one of the things plant parents find most daunting — and I completely understand why. There's something nerve-wracking about taking a living thing out of its home and moving it somewhere new.

But here's what I want you to take away from this: your plants are more resilient than you think. A little transplant shock is normal and temporary. Getting the soil and pot right sets them up for months or even years of happy growth. And that moment when you see the first new leaf unfurl after a repot, knowing you gave that plant exactly what it needed? That feeling never gets old.

You've got this 🌱

After every repot, we reach for our Support Brew concentrate as a soil drench to help roots establish and thrive in their new home. Natural, neem-based, and made in Australia — shop the full uBloomd range at ubloomd.com