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Pear-shaped puffball · Lycoperdon pyriforme

Is my Pear-shaped puffball suffering from rot?

Since puffballs grow on wood, they do not have roots, but the wood substrate can become waterlogged and cause the base of the fungus to decay. If the base feels mushy or smells bad, you have a moisture issue.

Check these first

  1. Smell the base of the puffball for a sour odor.
  2. Press the base to see if it is mushy.
  3. Check if the wood is sitting in standing water.

Likely causes

  1. Overwatering

    Most likely

    How to tell: The wood is soaking wet and the base of the puffball is turning dark and soft. A sour smell may be present.

    What to do: Stop watering immediately and let the wood dry out slightly. Ensure the wood is not sitting in a pool of water.

  2. Poor Drainage

    Possible

    How to tell: Water pools at the bottom of the wood or container. The base of the puffball stays constantly saturated.

    What to do: Elevate the wood to allow excess water to drain away. Ensure the container has drainage holes if the wood is inside one.

When to worry

If the base is turning black and disintegrating, the rot is advanced. You cannot save a rotting puffball, so remove it to protect the rest of the wood.

Stopping it coming back

Keep the wood damp but never soggy. Ensure excess water can always drain away.

Not sure which one it is? Photograph your pear-shaped puffball.

This page lists the usual causes. Pocket Botanist looks at your actual leaf 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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Questions people ask

How do I know if the wood is too wet?
If water drips out when you lift the wood, it is too wet. It should feel like a wrung-out sponge.
Can I save a rotting puffball?
Usually no. Once the tissue turns to mush, it is best to remove it and start fresh with new wood.

More problems with Pear-shaped puffball

Back to the Pear-shaped puffball guide

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