Mushroom Cultivation Terms

Essential terms and acronyms used in mushroom growing. Great for beginners and quick reference.

Agar

A gelatinous medium used for growing fungi cultures.

Colonization

The process of mycelium spreading through a substrate.

Contamination

Unwanted mold or bacteria that disrupts mushroom growth.

Casing Layer

A non-nutritious layer added to promote fruiting.

CO2

Carbon dioxide; high levels can affect mushroom development.

Fruiting Chamber (FC)

A controlled environment for mushrooms to grow.

Flush

A wave of mushroom growth, typically followed by dormancy.

Fresh Air Exchange (FAE)

Ventilation to maintain proper oxygen levels.

Grain spawn

Sterilized grains inoculated with mycelium for expansion into bulk substrates.

1. Prepare: Sterilize grain jars or bags.
2. Inoculate: Add clean culture or spawn.
3. Colonize: Mycelium spreads through the grain.

Gas exchange (GE)

The process of oxygen intake and CO2 release during mycelial growth.

1. Oxygen in: Mycelium breathes in O2.
2. CO2 out: Releases carbon dioxide.
3. Balance: Proper airflow supports healthy growth.

Liquid Culture (LC)

A nutrient-rich liquid used to grow mycelium.

Malt Extract Agar (MEA)

A common agar medium for fungi cultivation.

Mycelium

The vegetative part of fungi that colonizes substrates.

Pasteurization

Heat treatment to reduce contaminants in substrates.

Pinning

The initial stage of mushroom formation.

Spore Print

A collection of spores from a mature mushroom cap.

Sterile Technique

A set of practices used to prevent contamination.

Still Air Box (SAB)

An enclosed workspace to reduce contamination.

Substrate

The material that supports mycelium growth (e.g., grains, sawdust).

Spawn

Colonized material used to inoculate new substrates.

Sterilization

The process of eliminating contaminants using heat or chemicals.

Technique (TEK)

A method or approach used in mushroom cultivation.

Common Acronyms

Quick reference for abbreviations used in mushroom cultivation workflows.

A2A

Agar to Agar (transfer)

A2G

Agar to Grain (inoculation)

BE

Biological Efficiency (yield vs. substrate weight)

BRF

Brown Rice Flour (used in substrate)

CO2

Carbon dioxide; high levels can affect mushroom development.

CV

Coco Coir + Vermiculite (substrate mix)

FAE

Fresh Air Exchange

FC

Fruiting Chamber

G2G

Grain to Grain (transfer method)

GE

Gas Exchange

LC

Liquid Culture

MEA

Malt Extract Agar

MSI

Multi-Spore Inoculation

PF Tek

Popular beginner method using BRF cakes

HEPA

High Efficiency Particulate Air filter

HWFP

Hardwood Fuel Pellets

INC

Incubator

ISO

Isopropyl Alcohol

LME

Light Malt Extract

MYA

Malt-Yeast Agar

PC

Pressure Cooker

SAB

Still Air Box

TEK

Technique or method used in mushroom cultivation