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Moth Orchid · Phalaenopsis

Why are my moth orchid roots turning mushy?

Root rot is the most common issue for moth orchids, usually caused by sitting in water for too long. Check the roots inside the pot to see if they are firm and green or soft and brown.

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root rot on a plant
Photo: Ninjatacoshell, CC BY-SA 3.0

Check these first

  1. Lift the plant to see if the pot feels heavy with water.
  2. Inspect the roots through the clear plastic pot for brown or mushy spots.
  3. Smell the potting medium for any signs of decay.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The roots look brown, mushy, or hollow instead of firm and green. The potting medium may smell sour or moldy.

    What to do: Remove the orchid from its pot and trim away any dead, mushy roots with sterilized scissors. Repot the plant in fresh, chunky orchid bark that allows for plenty of airflow.

  2. Poor Drainage

    Possible

    How to tell: Water pools at the bottom of the decorative pot after you water. The roots at the base of the plant are rotting while the top ones look okay.

    What to do: Ensure your orchid is in a plastic liner pot with plenty of drainage holes. Never let the pot sit in a saucer of standing water for more than 15 minutes.

Root rot in other plants

Find out what's wrong with your moth orchid

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

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When to worry

If the majority of the root system is mushy, the plant is in danger. If only one or two roots are soft, you can save it with a quick repotting.

Stopping it coming back

Always let the potting medium dry out completely between waterings and never let the plant sit in standing water.

Moth Orchid: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your moth orchid and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

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Questions people ask

Can I save an orchid with no roots left?
It is very difficult, but you can try placing the plant in a high humidity environment to encourage new root growth. Most of the time, it is better to start fresh.
How often should I water to avoid rot?
Water every 7 to 14 days, but only when the medium feels dry. Never water on a strict schedule without checking the moisture first.

More problems with Moth Orchid

Back to the Moth Orchid guide

This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.