Repotting guide

When & how to repot Philodendron atabapoense (Philodendron atabapoense)

Also called Atabapoense, Purple Back Philodendron.

More about philodendron atabapoense

About Philodendron atabapoense

Philodendron atabapoense · also called Atabapoense, Purple Back Philodendron · houseplant

Philodendron atabapoense is an elegant climbing aroid with long, narrow, arrow-shaped leaves that are deep green on top and flushed maroon-purple underneath. A vigorous, easygoing grower from South America, it climbs readily on a moss pole and develops more elongated, dramatic foliage as it matures. Its colourful undersides make it a favourite among collectors.

Mature size: Climbs to 1.5-2 m indoors on a pole, with mature leaves often 40-60 cm long.

Watch for — Yellowing leaves: Overwatering or poor drainage. Allow the top third of the mix to dry and confirm the pot drains freely.

How to tell philodendron atabapoense needs repotting

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

Every 12–18 months — sooner if roots show fast. Philodendron atabapoense's growth habit — climbing vine; scrambles upward on support, producing long, narrow, elongating leaves that lengthen as the plant matures. — sets the pace. Philodendron atabapoense is an elegant climbing aroid with long, narrow, arrow-shaped leaves that are deep green on top and flushed maroon-purple underneath. A vigorous, easygoing grower from South America, it climbs readily on a moss pole and develops more elongated, dramatic foliage as it matures. Its colourful undersides make it a favourite among collectors.

What size pot to step philodendron atabapoense up to

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

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

Time it for spring. Repot philodendron atabapoense 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 atabapoense out and gently loosen any roots circling the bottom of the rootball.
Repot at the same depth. Put a layer of fresh airy, 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 philodendron atabapoense 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 atabapoense

Philodendron atabapoense wants airy, well-draining aroid mix. A blend of orchid bark, perlite and coco coir with some potting soil provides the aeration its roots need. Give it a moss pole or totem to climb for the most vigorous, mature growth. 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 atabapoense — frequently asked questions

How often should you repot philodendron atabapoense?

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

What size pot does philodendron atabapoense need?

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

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

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

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