Common Mushroom Growing Problems(and How to Fix Them)

Even experienced growers run into problems. Here’s how to fix the most common ones.

**1. Contamination**

– **Cause:** Unsterile tools or substrate.

– **Fix:** Use a pressure cooker; wear gloves; sanitize your work area.

**2. Mushrooms Not Fruiting**

– **Cause:** Low humidity or incorrect light.

– **Fix:** Mist more often; provide indirect light for 8–12 hours/day.

**3. Thin or Small Mushrooms**

– **Cause:** Not enough fresh air exchange.

– **Fix:** Increase ventilation or fan the chamber more often.

**4. Mushrooms Turning Yellow or Dry**

– **Cause:** Low humidity or direct sunlight.

– **Fix:** Move out of sun; raise humidity.

**5. Strange Smell**

– **Cause:** Bacterial contamination.

– **Fix:** Discard the batch; start fresh with sterile technique.