If you have a Phalaenopsis orchid sitting on your windowsill, you already know they are incredibly rewarding and relatively easy houseplants to care for. However, to keep them blooming year after year, you cannot leave them in the same soil forever. In my experience, repotting your orchid every 1 to 2 years is the absolute best thing you can do for its health.
Repotting benefits your orchid by providing a fresh, airy potting mix, restoring proper drainage, and giving healthy root growth the space it desperately needs. Old compost breaks down over time, becoming dense and suffocating the roots. Here is my foolproof, step-by-step guide to repotting your Phalaenopsis safely.
- ⏱️ When to Repot: The absolute best time to repot is right after your orchid finishes flowering and its blooms have dropped.
- 🚩 Warning Signs: Repot immediately if you see the potting mix decomposing into mush, or if roots are circling tightly around the inside of the pot.
- ✂️ Pruning: Always use sharp, sterilized shears to cut away any mushy, brown, or hollow dead roots.
- 🪵 The Right Soil: Never use standard potting soil! Orchids are epiphytes and require a chunky bark-based mix to breathe.
What You Will Need
Before you pull your plant out of its container, make sure you have all your tools ready to go on your workspace to minimize stress on the plant’s root system:
- Sharp, sterilized pruning shears (wipe them with rubbing alcohol first)
- A new, clear plastic orchid pot (only slightly larger than the old one, if needed)
- Premium, chunky orchid potting mix (bark-based)
Use the Right Mix!
Standard soil will kill an orchid. You must use a chunky bark mix that allows massive airflow around the roots to prevent root rot.
Step-by-Step Repotting Instructions
Step 1: Remove and Prune the Roots
Gently squeeze the sides of the plastic pot to loosen it, and carefully remove your orchid. Untangle the root system with your fingers and remove all of the old, degraded compost. Using your sterilized shears, cut off any dead, mushy, or completely hollow root pieces. If the healthy roots are extremely long, you can trim them back to about 15cm (6 inches). Note: Leave the silvery “aerial roots” that were growing outside the pot completely intact!
Step 2: Choose the Right Pot
Orchids actually like being slightly root-bound. If the cleaned roots fit comfortably back into the old pot, simply wash the pot out and reuse it! Sizing up too much can leave the roots sitting in an excessive amount of wet compost for too long, which leads to rot. If the roots are truly bursting out and do not fit, upgrade to a new clear pot that is just one size (about an inch) larger.
Step 3: Pack the New Compost
Hold the orchid so the base of the leaves sits just below the rim of the pot. Gently pack fresh, chunky orchid compost around your plant’s roots. Tap the side of the pot occasionally to ensure the bark pieces fall down and fill every empty crevice. Do not bury the upward-pointing aerial roots below the soil level; they need to breathe room air! Add a new bamboo support cane if the plant feels top-heavy.
Aftercare: What to Do Next
Once your orchid is snug in its new home, take it to the sink and water it thoroughly, allowing all the excess water to drain completely out of the bottom holes. Place your newly repotted orchid in a spot that receives bright, indirect sunlight.
Be very careful to avoid overwatering during the first few weeks. The roots need a little time to heal from the pruning and establish themselves in the new chunky medium. If you follow these simple steps, your Phalaenopsis orchid will thrive and reward you with another stunning display of flowers next season!
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