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Gardenia

Why is my gardenia showing signs of root rot?

It is less common for gardenias to get root rot if you follow a proper watering schedule, but it usually happens when the soil stays soggy for too long. Check the drainage holes in your pot first to make sure water is not pooling at the bottom.

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

Check these first

  1. Check the soil moisture level with your finger.
  2. Verify that the pot has working drainage holes.
  3. Smell the soil for a sour or rotten odor.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The leaves will turn yellow and drop, and the plant will look wilted even if the soil is wet. The roots will appear mushy and dark instead of firm and white.

    What to do: Stop watering immediately and let the top 2 inches of soil dry out. If the soil is waterlogged, repot the plant into fresh, well draining soil and trim away any black, mushy roots.

  2. Poor Drainage

    Possible

    How to tell: Water sits on the surface of the soil for a long time after watering. The pot may lack holes or be sitting in a saucer full of standing water.

    What to do: Ensure your pot has adequate drainage holes. Never let your gardenia sit in a saucer of water for more than 30 minutes after you finish watering.

Root rot in other plants

Find out what's wrong with your gardenia

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 stem feels soft at the base or the plant is dropping leaves rapidly, the rot may be advanced. If the roots are mostly black and mushy, the plant may be too far gone to save.

Stopping it coming back

Only water when the top inch of soil is dry and always empty the saucer after watering.

Gardenia: root rot? Check yours with a photo

Every plant is a little different. Take a photo of your gardenia 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 a gardenia with root rot?
If you catch it early, you can save it by trimming the dead roots and repotting. If the rot has reached the main stem, it is usually too late.
How often should I check the soil?
Check the soil every 3 to 4 days. Gardenias prefer consistent moisture but hate being waterlogged.

More problems with Gardenia

Back to the Gardenia 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.