Repotting guide

When & how to repot Round-Leaf Calathea (Calathea orbifolia)

Also called round-leaf calathea, orbifolia calathea, prayer plant.

More about round-leaf calathea

About Round-Leaf Calathea

Calathea orbifolia · also called round-leaf calathea, orbifolia calathea · houseplant

Calathea orbifolia is one of the most visually bold prayer plants, producing large rounded leaves up to 30 cm across with elegant silver-green striping. A high-humidity, low-fuss houseplant ideal for bathrooms or rooms with humidifiers; propagation is by division only, making it a slow-to-multiply collector's plant.

Mature size: 60–90 cm tall (24–36 in), spread up to 90 cm (36 in) with mature leaf spans of 25–30 cm

Watch for — Root rot from overwatering: C. orbifolia is sensitive to soggy soil. Yellowing lower leaves and a foul smell from the pot signal root rot. Unpot, trim black mushy roots, and repot in fresh well-draining mix. Ensure the pot has drainage holes.

How to tell round-leaf calathea needs repotting

Repotting on a calendar is less reliable than reading the plant. For round-leaf calathea, watch for these signs:

Roots spiralling thickly out of the drainage holes or pushing the whole plant up out of the pot.
The pot is so packed that water runs straight through in seconds and barely wets the soil.
It has split a plastic pot, or the rootball is a solid mass with almost no soil left when you slide it out.
Growth and (for round-leaf calathea) flowering have clearly stalled despite good light and feeding — but remember this plant likes being snug, so a little crowding alone is not a reason to repot.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot round-leaf calathea

Only every 2–4 years, when genuinely crowded. Round-Leaf Calathea is one of the plants that genuinely prefers a snug pot — it grows and flowers better with its roots a little restricted, so resist the urge to repot it on schedule. Clump-forming, upright rosette with large rounded leaves; leaves fold slightly at night (nyctinastic movement).

What size pot to step round-leaf calathea up to

Go up only one pot size — roughly 2–3 cm (about an inch) wider in diameter, no more. Round-Leaf Calathea positively prefers a snug pot: it flowers and grows better when the roots are a little restricted. The single biggest repotting mistake here is over-potting — dropping round-leaf calathea into a pot two or three sizes up. All that surplus soil holds water the small root system cannot use, stays cold and wet, and rots the roots within weeks. When in doubt, choose the smaller pot.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot round-leaf calathea

Early spring, just as new growth restarts, is the ideal window for round-leaf calathea. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting round-leaf calathea

Confirm it actually needs it. Slide round-leaf calathea out and check the roots. Only continue if it is genuinely packed — this plant prefers a snug pot, so if there is still soil and room, put it straight back.
Pick a pot only one size up. Choose a pot just 2–3 cm wider with good drainage. Resist anything bigger; over-potting is the main killer here.
Ease it out gently. Water lightly the day before, then tip round-leaf calathea out, supporting the base. Tease the outer roots free only enough to stop them circling.
Repot at the same depth. Add a layer of fresh peat-free, well-draining moisture-retentive potting mix, set the plant so the soil line sits exactly where it did before, and backfill around the sides, firming lightly.
Settle it in. Water once to settle the soil, then let it sit. Hold off on more water until the top of the soil dries — fresh soil around a small root system stays wet for a while.

Aftercare

Because the new soil holds more water than the old crammed rootball did, ease right back on watering — let the top of the soil dry before you water round-leaf calathea again, or you will rot the roots in the very pot you just moved it to. Keep it out of harsh direct sun for a fortnight. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for round-leaf calathea

Round-Leaf Calathea wants peat-free, well-draining moisture-retentive potting mix. Blend peat-free potting compost with perlite (2:1 ratio) for moisture retention with adequate aeration. Avoid dense mixes that compact and stay soggy. Slightly acidic pH of 6.0–6.5 is ideal. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting round-leaf calathea — frequently asked questions

How often should you repot round-leaf calathea?

Only every 2–4 years, when genuinely crowded for round-leaf calathea. Only repot round-leaf calathea every 2–4 years, and only when it is genuinely root-bound — it flowers and grows best slightly crowded. Step up just one pot size in spring using peat-free, well-draining moisture-retentive potting mix. The key mistake is over-potting: a too-big pot stays wet and rots the roots.

What size pot does round-leaf calathea need?

When is the best time of year to repot round-leaf calathea?

Does round-leaf calathea like to be root-bound?

Yes — round-leaf calathea genuinely flowers and grows best when slightly pot-bound, so do not rush to repot it. The mistake to avoid is over-potting into a much larger pot: the excess soil stays wet, the roots cannot use it, and the plant rots. Only repot every few years and only one snug size up.

Should you fertilise round-leaf calathea after repotting?

Not immediately. Wait about 4 weeks after repotting round-leaf calathea. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.