Repotting guide

When & how to repot Rhaphidophora korthalsii (Rhaphidophora korthalsii)

Also called Shingle Plant.

More about rhaphidophora korthalsii

About Rhaphidophora korthalsii

Rhaphidophora korthalsii · also called Shingle Plant · houseplant

Rhaphidophora korthalsii is a shingling aroid whose juvenile leaves press flat against a support like overlapping tiles, then transform into large, deeply lobed adult foliage as it climbs. This dramatic shift makes it a collector's favourite. It demands a moss board or slab, bright indirect light, an airy moist mix and high humidity to shingle well.

Mature size: Climbs to about 1.8-3 m or more on a tall support indoors; mature lobed leaves can reach 30 cm or larger once well established.

Watch for — Failure to climb or grip: Without a textured, moist support the aerial roots cannot attach. Give it a moss pole or slab kept damp so roots can grab on.

How to tell rhaphidophora korthalsii needs repotting

Repotting on a calendar is less reliable than reading the plant. For rhaphidophora korthalsii, 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 rhaphidophora korthalsii 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 rhaphidophora korthalsii

Every 12–18 months — sooner if roots show fast. Rhaphidophora korthalsii's growth habit — aggressive shingling climber: juvenile leaves lie flat and overlapping against a slab or pole, then morph into large, deeply lobed adult leaves as the vine ascends. strong aerial roots cling tightly to its support. — sets the pace. Rhaphidophora korthalsii is a shingling aroid whose juvenile leaves press flat against a support like overlapping tiles, then transform into large, deeply lobed adult foliage as it climbs. This dramatic shift makes it a collector's favourite. It demands a moss board or slab, bright indirect light, an airy moist mix and high humidity to shingle well.

What size pot to step rhaphidophora korthalsii up to

Step up one pot size — about 2–3 cm (an inch) wider. Rhaphidophora korthalsii 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 rhaphidophora korthalsii

Early spring, just as new growth restarts, is the ideal window for rhaphidophora korthalsii. 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 rhaphidophora korthalsii

Time it for spring. Repot rhaphidophora korthalsii 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 rhaphidophora korthalsii out and gently loosen any roots circling the bottom of the rootball.
Repot at the same depth. Put a layer of fresh chunky, well-draining aroid mix 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 rhaphidophora korthalsii 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 rhaphidophora korthalsii

Rhaphidophora korthalsii wants chunky, well-draining aroid mix. A coarse blend of bark, perlite, coir and charcoal provides the aeration and drainage its aerial-rooting habit needs. It must drain freely to avoid root rot. Slightly acidic pH (5.5-6.5) suits it. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting rhaphidophora korthalsii — frequently asked questions

How often should you repot rhaphidophora korthalsii?

Every 12–18 months — sooner if roots show fast for rhaphidophora korthalsii. Repot rhaphidophora korthalsii 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 chunky, well-draining aroid mix. Don't jump several sizes — that soggy excess soil is what rots vigorous roots.

What size pot does rhaphidophora korthalsii need?

When is the best time of year to repot rhaphidophora korthalsii?

Can you put rhaphidophora korthalsii straight into a much bigger pot?

No. Even a fast-growing rhaphidophora korthalsii 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 rhaphidophora korthalsii after repotting?

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