Black Mold (Aspergillus / Rhizopus)
ContaminantsAct now
Dark green-to-black powdery spots, often on a fuzzy base.
Likely causes
- Contamination during handling
- Damp, dirty conditions
What to do
Dispose of it sealed and do not inhale the spores — some are a genuine health hazard. Improve air handling and cleanliness.
Easily confused with
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This entry is general growing guidance compiled from extension and trade practice; it has no single citation yet. Treat it as a starting point.
Last updated: 2026-10-19