How do I identify contamination in my grow?

Common contaminants appear as green, black, pink, or orange patches (mold) or slimy wet areas (bacterial contamination). Healthy mycelium is always white to off-white; any other coloration is a warning sign requiring immediate isolation.

Can I save contaminated grain spawn?

Contaminated grain spawn should generally be discarded and double-bagged immediately to prevent spore spread. Attempting to salvage contaminated grain rarely succeeds and risks spreading contamination to other grows.

How can I prevent contamination?

Working in a still-air box or laminar flow hood, using properly sterilized equipment, and maintaining good personal hygiene (gloves, mask, disinfected surfaces) dramatically reduces contamination rates. Keeping humidity high but air exchange adequate also helps prevent bacterial wet rot.

Contamination Identification Guide | Psilobase Україна

By Color

Green Black White Pink Yellow Gray

By Location

Substrate Casing Layer Pins/Primordia Mature Mushrooms Jars/Bags

By Severity

🔴 Critical 🟠 High 🟡 Medium 🟢 Low

By Growth Stage

Colonization Fruiting Both Stages

🔬 Contamination Identification Guide

🔍 Filter Contaminants

By Color

By Location

By Severity

By Growth Stage

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