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Check these first
- Smell the substrate for any sour or fermented odors.
- Press the substrate gently to see if water pools at the bottom.
- Inspect the surface for any discolored or fuzzy patches.
Likely causes
Excessive Moisture
PossibleHow to tell: It is less common for this plant to experience rot unless the substrate is constantly soaking wet. You will notice a sour smell and a dark, slimy appearance on the block.
What to do: Stop misting the substrate directly and allow it to dry out for 2 to 3 days. Ensure the container has drainage holes so excess water can escape.
Contamination
PossibleHow to tell: It is less common for this plant to rot from simple overwatering, as it is often caused by green mold or bacteria taking over the substrate. You might see fuzzy green or grey patches appearing alongside the mushy texture.
What to do: If you see green mold, remove the block from your growing area immediately to prevent spores from spreading. Unfortunately, once a block is heavily contaminated with mold, it cannot be saved.
Find out what's wrong with your lingzhi mushroom
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 substrate smells foul or shows visible mold, it is likely compromised. A healthy substrate should smell earthy and fresh.
Stopping it coming back
Only mist the air around the mushroom rather than spraying the substrate directly. Keep the humidity high but ensure the surface of the block remains slightly damp rather than wet.
Keep your lingzhi mushroom healthy from here
Save your plant in Pocket Botanist and you get care reminders timed for this plant, plus a care history that shows what worked. Identification and a health check are free.
Questions people ask
- How often should I water?
- Mist the air around the mushroom every 1 to 2 days. Avoid letting water pool on the substrate surface.
- Is the mushroom still safe to eat if the block is moldy?
- No, do not consume any part of the mushroom if the substrate shows signs of mold or rot. It is best to discard the entire block.
More problems with Lingzhi mushroom
Back to the Lingzhi mushroom 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.