When and how to repot a houseplant

Repotting scares a lot of people — yet it's one of the kindest things you can do for a plant. A pot that's grown too small chokes the roots, exhausts the soil and stalls growth. Here's how to know when to repot, what to use, and the step-by-step method to do it without stressing your plant.

1. The signs it's time to repot

Your plant sends clear signals. Repot when you notice any of these:

• Roots are escaping through the drainage hole, or circling on the soil surface;
• Growth has stalled even though it's the right season and care is correct;
• Water runs straight through: there's barely any soil left, just a tangle of roots;
• The root ball is compact and comes out in one solid block when you unpot;
• The plant is unstable, too tall for its pot, or dries out in no time.

As a rule, most houseplants are repotted every 1 to 2 years. Slow growers (cacti, snake plants) can wait much longer.

2. The best time: spring

Repot preferably in spring or early summer, when the plant enters active growth: it heals and settles in far faster. Avoid repotting in the dead of winter, the dormant season, unless it's urgent (root rot, broken pot). Don't repot a plant in full bloom either — let it finish.

3. Choosing the right pot and soil

The pot: go only 1 to 2 inches (2-4 cm) larger in diameter than the old one. This is the most common mistake: an oversized pot holds a volume of soil that young roots can't reach, moisture stagnates, and roots rot. The pot must have a drainage hole.

The soil: a standard houseplant potting mix suits most plants. Adapt it as needed: a free-draining mix (potting soil + perlite + sand) for cacti and succulents, an airy substrate (bark, perlite) for tropicals like monsteras and orchids.

4. Repotting step by step

1. Water the day before: a slightly moist root ball comes out more easily.
2. Unpot gently: lay the plant down, squeeze the pot's sides and pull from the base of the stems, without forcing.
3. Inspect the roots: loosen the root ball gently and trim any black, mushy or rotten roots with a clean tool. Healthy roots are firm and pale.
4. Prepare the new pot: a layer of soil at the bottom (and clay pebbles if drainage is limited).
5. Position the plant: the top of the root ball should sit about an inch below the rim. Fill the sides with fresh soil.
6. Firm gently without compacting, then water to bind the soil to the roots.

5. Aftercare

The following days are decisive. The plant needs to root into its new substrate:

• Gentle light: avoid direct sun for the first week;
• Moderate watering: fresh soil holds water, so only water when the surface dries — see our watering guide for the cues;
• No fertilizer for about a month: fresh mix already contains nutrients, and freshly cut roots burn easily;
• Patience: a little temporary wilting is normal. If the plant really struggles, our guide to saving a dying plant can help.

6. Mistakes to avoid

• A much-too-big pot "so I won't have to do it again" — the worst false good idea;
• Repotting in winter without need;
• Packing the soil like concrete — roots need air;
• Burying the stem deeper than it was, which can cause rot;
• Fertilizing right away after repotting.

Frequently asked questions

When should you repot? As soon as roots escape the pot, growth stalls, or the root ball is compact — in practice every 1 to 2 years, ideally in spring.

What pot size? 1 to 2 inches larger in diameter, no more, with a drainage hole.

Should I cut the roots? Only dead roots (black, mushy). You can loosen and lightly trim a very pot-bound root ball, but you don't cut healthy roots.

Can Leafy help me track repotting? Yes: each plant has its Passport in the Leafy app, where you log repottings, waterings and cuttings to follow its progress over time.