Bulk Sterilised Master's Mix Mushroom Substrate Bag liquid-culture Fruiting: 13–17°C (55-63°F) to encourage

Fruiting: 13–17°C (55-63°F) to encourage primordia formation

100% autoclavable

Fruiting: 15-21°C (59-68°F) to encourage primordia formation

Growing your own Elm Oyster mushroom at home has never been easier with our Elm Oyster Grain Spawn

Humidity: High humidity (over 80%) is essential for healthy

Bulk Sterilised Master's Mix Mushroom Substrate Bag liquid-culture Fruiting: 13–17°C (55-63°F) to encourageBulk Sterilised Master's Mix Mushroom Substrate Bags 251000 Unit Packs Scale up your spawn production with lab prepped hardwood, soyhulls and gypsum substrate thats ready to mix with grain spawn. Built for growers who care about consistent colonisation, clean results, and a supply they can actually rely on. Each Master's Mix substrate bag is prepared in clean room conditions and sterilised in a computer controlled autoclave, taking the guesswork out