Underwatering
Bone-dry bark, thin shriveled roots, and a limp yellow lower leaf usually mean it went too long without a drink.
Diagnosis
Underwatering
What's happening
A well-watered Phalaenopsis root is plump and green; when it goes too long between waterings the roots shrivel to thin grey threads and the leaves lose their firmness. The plant sheds its oldest leaf first to conserve water, so a lower leaf yellows and softens while the upper leaves start to wrinkle.
How to fix it
Water thoroughly: take the pot to the sink and run lukewarm water through the bark for a minute or two until everything is soaked, then let it drain completely. If the bark is so dry the water just runs through, soak the whole pot in a basin of room-temperature water for 10–15 minutes, then drain fully. Resume checking weekly and water once the roots turn silvery — the green should return to the roots within a day.
What fixes it
- A long-spout watering can — A long-spout can lets you flood the bark evenly and reach the roots without splashing the crown.
If that doesn't fix it
This is general guidance based on common symptoms; individual plants vary.
Read the full Moth Orchid care guide →
Reviewed June 2026 · how we check this