Plant SOS · Repotting
When to repot your
indoor plant? The signs to look for
Repotting is one of the most beneficial interventions for an indoor plant — and one of the most poorly timed. Too early, you stress a plant that was doing well. Too late, you leave cramped roots to exhaust themselves in depleted substrate. The key is not a fixed calendar, but observation: your plant itself tells you when it needs more space.
In this guide, we review all the signs that indicate repotting is necessary — and those that do not require immediate action.
6 signs that indicate necessary repotting
There's no need to wait for a calendar or repot out of habit. These signals are the only reliable indicators.
Roots are growing out of the drainage holes
This is the clearest and most reliable sign. When roots try to escape from the bottom of the pot, it means they have colonized all available space and have nowhere else to go. Repotting should be planned in the coming weeks — not necessarily an emergency, but by the next spring if it's autumn-winter.
Roots are visible on the surface of the substrate
When roots rise and form a visible network on the soil surface, the pot is full. The plant is looking for space upwards because it can't find it elsewhere. Same diagnosis: repotting to be planned.
The substrate dries very quickly after each watering
If you have to water every 2-3 days when you normally watered once a week, it means the roots have occupied the entire volume of the pot — there is almost no substrate left to retain water. This sign is subtle but very reliable.
The plant is stagnant despite good care
A plant that has not produced new leaves for several months — during the peak growing season, with good watering and good light — may simply be cramped. Repotting in spring often dramatically restarts growth.
The pot is deforming or cracking
In the most advanced cases — especially with flexible plastic pots — root pressure can deform the pot. This is rare but it's a sign of urgency: repot without delay, even outside the ideal season.
More than 2 years in the same pot
Even without visible signs, a substrate used for more than 2 years is generally depleted of nutrients and compacted. Repotting with fresh potting soil, even in the same pot, re-energizes the plant. Consider it the following spring.
"It's not the calendar that dictates repotting,
it's the plant itself."
Which season to choose?
🌿 Spring — ideal
From March to May, the plant emerges from dormancy and is ready to invest in new roots. This is the period when it recovers best from the stress of repotting. Growth typically resumes within 2 to 4 weeks.
☀️ Early summer — acceptable
June-July remains a good period if spring was missed. Avoid heatwaves — intense heat combined with repotting stress can weaken the plant.
🍂 Autumn — not recommended
The plant enters dormancy and slows down. It recovers less well from stress. To be avoided except in emergencies (root rot, pests).
❄️ Winter — to be avoided
The plant is in complete rest. Repotting in winter causes unnecessary stress and growth will be very slow. Wait until March except in absolute emergencies.
How often to repot depending on the plant?
| Plant | Frequency | Particularity |
|---|---|---|
| Monstera, Pothos, Philodendron | Every 1-2 years | Fast growth — check roots after 12 months |
| Ficus, Dracaena, Schefflera | Every 2 years | Prefer to be slightly root-bound |
| Orchid | Every 2-3 years | When roots overflow or substrate (bark) decomposes |
| Cactus & Succulents | Every 2-3 years | Very slow growth, slightly small pot = good for them |
| Calathea, Alocasia | Every 1-2 years | Sensitive — repot gently in spring only |
| Zamioculcas, Sansevieria | Every 3-4 years | Very resistant, appreciate being root-bound |
| Fast-growing plants | Every spring | Pothos, ivy, some philodendrons |
When NOT to repot
Certain situations are often misinterpreted as a need for repotting when they are not.
⚠ Do not interpret these signs as a need to repot
Newly purchased plant: let it acclimate for 2 to 3 weeks before any intervention. The stress of transport + the stress of repotting simultaneously can kill it.
Flowering plant: disturb a flowering plant as little as possible. Wait until flowering is over.
Plant in winter: even if you see roots slightly coming out, wait until spring. The risk of non-recovery in winter is too high.
Leaves falling after moving: this is an adaptation stress, not a need for repotting. Stabilize the environment first.
Emergency repotting — special cases
Certain situations require immediate repotting, regardless of the season.
Confirmed root rot
If you smell mold or if the stem is soft at the base, immediately unpot to cut off rotten roots and start with fresh substrate. Every hour counts — do not postpone until the next season.
Infestation of root pests
Mass fungus gnat larvae, nematodes, or fungi in the substrate require emergency repotting with complete substrate replacement, regardless of the season.
Pot cracked or burst under pressure
If the pot is visibly damaged by root pressure, repot without delay to prevent the roots from drying out or being further injured.
🪴 Our repotting tools
Trowels & cultivators
- 🪣 Trowel with Graduation – precise shovel
- 🪣 Narrow Forged Steel & Ash Trowel
- 🌿 3-Prong Precision Cultivator – repotting
- 🛠️ 3-piece recycled plastic tool kit
Also find our pruners, watering cans, and all our tools:
See our maintenance tools →These guides might also help you
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Start the diagnosis🌿 Guide written by the Douceur Maison Plant SOS team.
We write practical guides to help enthusiasts care for their indoor plants. · sosplantes@douceurmaison.fr