How to Replant a Phalaenopsis Orchid | Step-by-Step Guide

Phalaenopsis orchids, also known as Moth Orchids, should be replanted every one to two years. Repotting refreshes the growing medium, prevents root problems, and supports ongoing flowering. Many orchid growers in Australia search for clear guidance on how to replant a Phalaenopsis orchid, as timing and technique are critical for success.

When to Replant a Phalaenopsis Orchid

After flowering, when the spike has faded
Every 12–24 months to replace decomposed orchid bark
If roots appear overcrowded or are growing out of the pot
When signs of root rot or poor drainage are visible

Tip: Avoid repotting while the orchid is actively flowering. The best time is just after the bloom cycle has finished.

521407988_18169573279354097_7940948531518287745_n (1)

487706123_18129053836413763_7138385833795327867_n (1)

Step-by-Step Replanting Process

Repotting a Phalaenopsis orchid is straightforward when you follow the correct steps. Use a specialised orchid bark mix for aeration and drainage, and handle roots with care to prevent damage.

Prepare materials: Fresh orchid bark mix, a sterilised pair of scissors, and a clean pot slightly larger than the current one.
Remove the orchid: Gently slide the plant out of its pot, loosening the roots carefully.
Trim dead roots: Using sterilised scissors, cut away any soft, brown, or rotted roots. Healthy roots should be firm and green or silver.
Place in new pot: Position the orchid so the crown sits just above the medium level.
Fill with bark mix: Add the orchid bark around the roots, gently tapping the pot to settle it without compacting.
Water lightly: After repotting, water sparingly to allow the roots to adjust.

Tip: Always use sterilised tools when trimming orchid roots to prevent disease.

479783139_18035318303613732_5492660486763011914_n (1)

495358371_18151945348371418_653004337429935432_n (1)

Aftercare & FAQs

Once replanted, Phalaenopsis orchids require careful aftercare to establish in their new pot. Proper watering, feeding, and light conditions will ensure they recover quickly and prepare for their next flowering cycle.

Aftercare Checklist

Keep the orchid in bright, indirect light to support root recovery
Water sparingly in the first two weeks, then return to a regular schedule
Begin fertilising again after two to three weeks, once roots have settled
Monitor leaves for signs of stress and adjust care as needed

Frequently Asked Questions

What mix should I use to replant a Phalaenopsis orchid? Use a coarse orchid bark mix that provides aeration and drainage. Avoid standard potting soil, which can suffocate roots.

How often should Phalaenopsis orchids be replanted? Every one to two years, or sooner if the potting medium has broken down or roots appear unhealthy.

Should I fertilise immediately after repotting? Wait two to three weeks before resuming fertiliser, allowing roots to recover. Resume with a diluted liquid feed for best results.

Which fertiliser is best for Phalaenopsis orchids after repotting? A balanced liquid fertiliser is recommended. CompleteGrow Indoor Plant Food Concentrate provides the essential nutrients orchids need to re-establish and prepare for flowering.

By following these steps and maintaining consistent aftercare, your Phalaenopsis orchid will adapt quickly to its new environment and continue to produce vibrant, long-lasting blooms.