Repotting guide

When & how to repot Philodendron Pastazanum (Philodendron pastazanum)

Also called Pasta Philodendron.

More about philodendron pastazanum

About Philodendron Pastazanum

Philodendron pastazanum · also called Pasta Philodendron · tropical

Philodendron pastazanum is a creeping terrestrial species with large, glossy, deeply quilted heart-shaped leaves that lie close to the soil along a thick horizontal rhizome. Unlike climbing philodendrons it crawls rather than climbs, wanting bright indirect light, a chunky free-draining mix, warm temperatures and high humidity to push out its impressively textured leaves.

Mature size: Individual leaves reach 30-60 cm long; the rhizome spreads horizontally, so plants stay low (around 40-60 cm tall) but can run a metre or more across over time.

Watch for — Rhizome or root rot: The surface rhizome rots if buried too deep or kept wet. Plant it shallow, use a chunky mix and let the surface dry between waterings.

How to tell philodendron pastazanum needs repotting

Repotting on a calendar is less reliable than reading the plant. For philodendron pastazanum, 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 philodendron pastazanum 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 philodendron pastazanum

Every 12–18 months — sooner if roots show fast. Philodendron Pastazanum's growth habit — creeping terrestrial crawler with a thick horizontal rhizome that runs along the soil surface, sending up large heart-shaped leaves rather than climbing upward. — sets the pace. Philodendron pastazanum is a creeping terrestrial species with large, glossy, deeply quilted heart-shaped leaves that lie close to the soil along a thick horizontal rhizome. Unlike climbing philodendrons it crawls rather than climbs, wanting bright indirect light, a chunky free-draining mix, warm temperatures and high humidity to push out its impressively textured leaves.

What size pot to step philodendron pastazanum up to

Step up one pot size — about 2–3 cm (an inch) wider. Philodendron Pastazanum 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 philodendron pastazanum

Early spring, just as new growth restarts, is the ideal window for philodendron pastazanum. 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 philodendron pastazanum

Time it for spring. Repot philodendron pastazanum 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 philodendron pastazanum out and gently loosen any roots circling the bottom of the rootball.
Repot at the same depth. Put a layer of fresh chunky, fast-draining terrestrial 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 philodendron pastazanum 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 philodendron pastazanum

Philodendron Pastazanum wants chunky, fast-draining terrestrial aroid mix. Use a loose blend of orchid bark, perlite, coco coir and some potting soil so the surface rhizome and roots stay aerated. A wide, shallow pot suits its horizontal crawling habit better than a deep one. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting philodendron pastazanum — frequently asked questions

How often should you repot philodendron pastazanum?

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

What size pot does philodendron pastazanum need?

When is the best time of year to repot philodendron pastazanum?

Can you put philodendron pastazanum straight into a much bigger pot?

No. Even a fast-growing philodendron pastazanum 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 philodendron pastazanum after repotting?

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