Choose your answer before opening the explanation. This is a learning exercise, not a competency assessment.
NHB links leaking, stinking mushrooms to:
- Compost below 64 per cent moisture under wet casing
- Too much fresh air
- Casing that is too thin
- Spawn that is too old
See the answer and why
Compost below 64 per cent moisture under wet casing Dry compost with a wet casing is the combination NHB names.

