Repotting guide

When & how to repot Round-Leaved Rhoogeton (Rhoogeton cyclophyllum)

Also called Round-Leaved Rhoogeton.

More about round-leaved rhoogeton

About Round-Leaved Rhoogeton

Rhoogeton cyclophyllum · also called Round-Leaved Rhoogeton · tropical

Round-Leaved Rhoogeton is a rare, low-growing gesneriad native to the rainforests of Venezuela, Guyana, and northern Brazil. It produces nearly circular, moss-like leaves on creeping stems and small tubular flowers. Best suited to a humid terrarium or vivarium environment, it requires constant warmth, shade, and high moisture.

Mature size: 5–10 cm tall, spreading 15–30 cm across substrate

Watch for — Algae overgrowth on substrate: In very high-humidity conditions with bright light, algae can colonise the soil surface and compete with roots. Reduce light intensity slightly and improve airflow with brief venting of the terrarium.

How to tell round-leaved rhoogeton needs repotting

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

Roots poking out of the drainage holes or coiling visibly around the inside of the pot.
You are watering far more often than you used to because the rootball dries out within a day or two.
Water runs straight through and out the bottom without soaking in.
Top growth has slowed or new round-leaved rhoogeton leaves are noticeably smaller than older ones despite good light.

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-leaved rhoogeton

Every 12–18 months — sooner if roots show fast. Round-Leaved Rhoogeton's growth habit — low creeping or mat-forming herb with nearly circular, fleshy leaves on thin, prostrate stems — sets the pace. Round-Leaved Rhoogeton is a rare, low-growing gesneriad native to the rainforests of Venezuela, Guyana, and northern Brazil. It produces nearly circular, moss-like leaves on creeping stems and small tubular flowers. Best suited to a humid terrarium or vivarium environment, it requires constant warmth, shade, and high moisture.

What size pot to step round-leaved rhoogeton up to

Step up one pot size — about 2–3 cm (an inch) wider. Round-Leaved Rhoogeton grows fast, so it will fill that space within a season, but jumping several sizes at once still backfires: the unused soil stays soggy and rots even a vigorous root system. One size at a time, every year or so, is the rhythm.

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-leaved rhoogeton

Early spring, just as new growth restarts, is the ideal window for round-leaved rhoogeton. 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-leaved rhoogeton

Time it for spring. Repot round-leaved rhoogeton in early spring as growth restarts so it re-roots quickly into the fresh soil.
Choose one size up. Pick a pot about 2–3 cm wider with drainage holes. One step only — a much bigger pot stays soggy and rots roots.
Ease the plant out. Water lightly the day before, then tip round-leaved rhoogeton out and gently loosen any roots circling the bottom of the rootball.
Repot at the same depth. Put a layer of fresh open, moisture-retentive terrarium mix with live or dried sphagnum moss in the new pot, set the plant so its soil line is unchanged, and backfill, firming lightly.
Water and pause feeding. Water once to settle the soil. Hold off fertiliser for about a month — fresh mix already has nutrients and feeding now burns new roots.

Aftercare

Water round-leaved rhoogeton once to settle the soil, then let the surface dry before watering again — fresh mix around the roots stays wetter than the old compacted ball, so the commonest post-repot mistake is overwatering. Keep it out of direct sun for a week or two while roots re-establish. 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-leaved rhoogeton

Round-Leaved Rhoogeton wants open, moisture-retentive terrarium mix with live or dried sphagnum moss. A blend of fine orchid bark, coconut coir, and perlite (1:2:1) or a live-sphagnum-topped terrarium substrate provides the right balance of aeration and moisture retention. pH should be slightly acidic, around 5.5–6.5. 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-leaved rhoogeton — frequently asked questions

How often should you repot round-leaved rhoogeton?

Every 12–18 months — sooner if roots show fast for round-leaved rhoogeton. Repot round-leaved rhoogeton roughly every 12–18 months, in early spring as growth restarts. It grows fast and circles its pot quickly, so step up one size (about 2–3 cm wider) into fresh open, moisture-retentive terrarium mix with live or dried sphagnum moss. Don't jump several sizes — that soggy excess soil is what rots vigorous roots.

What size pot does round-leaved rhoogeton need?

When is the best time of year to repot round-leaved rhoogeton?

Can you put round-leaved rhoogeton straight into a much bigger pot?

No. Even a fast-growing round-leaved rhoogeton should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise round-leaved rhoogeton after repotting?

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