How to Repot an Orchid Without Killing It (Step-by-Step)
The only three ways to get this wrong
1. Packing the bark tight. You would be removing the air pockets that are the entire point of bark.
2. Burying the crown. Water pooling where the leaves meet the base causes crown rot, which is fatal.
3. Watering too soon afterwards. Fresh bark absorbs slowly. Watering on your old schedule drowns it.
When to do it
Change the mix roughly once a year, ideally just after a bloom cycle finishes. The specific signals:
- Bark looks dark and soft rather than chunky, or crumbles between your fingers
- Water no longer drains through quickly
- The mix smells sour or musty
- The plant looks unhappy despite correct watering and light
Do not repot mid-bloom unless there is serious rot — the stress makes the plant drop its flowers. Roots spilling over the rim, on their own, are not a reason to repot.
The four steps
1. Get it out of the old pot
Squeeze the sides of the plastic pot to loosen the root mass. If the roots have grown around the pot, cut the pot off — that is normal, and worth keeping clear pots for. Some root breakage is expected. Do not force it.
Shake or tap the old bark off. Getting most of it is enough. Only rinse the roots if the plant has a visible pest problem.
2. Inspect and trim
Living roots are firm and plump, white or green. Leave them. Dead roots are mushy, brown, hollow or shrivelled, and they harbour disease.
- Keep: firm, plump, white or green
- Cut: mushy, brown, hollow, shrivelled
Snip the dead ones close to the base with sterilised scissors. Do not be sentimental — dead roots cannot recover and they rot the healthy ones. If you remove more than half, the plant was in real trouble and recovery will take longer.
3. Seat the plant
Hold the orchid so the crown, where the leaves meet the base, sits at or just above the rim, with the roots hanging inside. Never below the surface of the mix.
Choose a pot barely larger than the root mass. Orchids actively prefer to be tight. One size up at most.
4. Work the mix in
Pour fresh bark around and between the roots and use your fingers to ease it down. Tap the pot on the counter to let it settle naturally, then top up. The finished pot should feel slightly loose, not solid, with the plant sitting upright.
Water once, then wait
Run lukewarm water through the bark for 30 to 60 seconds and let it drain completely. That settles the mix around the roots and gives the plant its first drink.
Then leave it alone for 7 to 10 days. Watering too soon is the number one cause of post-repot rot.
Fresh bark absorbs more slowly than the broken-down mix it replaced, so your old rhythm will drown it. Once it has dried out fully that first time, go back to soak and drain whenever the bark dries.
What recovery looks like
Expect the plant to slow down for two to six weeks. Leaf growth pauses and any remaining flowers may drop early. Within six to eight weeks you should see new root tips, white or green, pushing out from the base. That is the all-clear.
If two months pass with no new growth and the plant looks worse, lift it gently out and inspect the roots for rot.
Common questions
What if I cut a healthy root by mistake?
One cut is not a problem. Sterilise the scissors, dust the cut end with cinnamon if you keep some to hand (a common grower habit for drying a cut surface), and carry on. Orchids regrow roots.
How much bigger should the new pot be?
One size at most, and often the same size again. Orchids prefer to be root-bound. A pot that is too large holds a volume of wet bark the roots cannot use, and that rots them.
Can I reuse the old bark?
No. Once bark has broken down it has lost the structure that made it work and starts holding water like soil. That is the exact condition you are repotting to escape. Always use fresh mix.
There is a small plant growing off the side. What is it?
A keiki — a baby orchid the plant has produced from a node. Leave it attached until it has a few inches of its own roots, then separate it and pot it up in the same bark mix.
Get the right mix for your repot
Pre-blended fir bark, pumice and biochar. Ready to use in about 30 minutes, and one bag covers several repots.
Shop Molly’s Orchid Mix → · Take the free Soil Finder quiz →
Keep reading: Do orchids need soil? · Best potting mix for orchids · Orchid care guide
