Bulk Golden Oyster Mushroom Grain Spawn Bag Easiest Kit Colonisation: Complete darkness is preferred

Colonisation: Complete darkness is preferred rapid colonisation

5 hrs @ 121°C (computer-controlled autoclave) Inoculation guide ~5ml spore or culture solution via injection port Typical colonisation window ~3–4 weeks (culture/conditions dependent) Storage Use soon after arrival

Perfect for refilling a Martian MonoTub

milo grain and CVG substrate blend is perfect for a wide variety of gourmet mushrooms

Our grain spawn comes with everything you need in one convenient package: a pre-colonised bag of Speckled Chestnut Grain Spawn that is ready to go right out of the box - no need for messy inoculations or waiting periods

Bulk Golden Oyster Mushroom Grain Spawn Bag Easiest Kit Colonisation: Complete darkness is preferredBulk Golden Oyster Mushroom Grain Spawn Bag 251000 Unit Packs Scale up your Golden Oyster mushroom grows with vigorous, fully colonised grain spawn ready to mix straight into hardwood or Masters Mix substrates for fast, dependable colonisation. Built for growers who care about strong colonisation, clean results, and a supply they can actually rely on. Each Golden Oyster grain spawn bag is prepared in cleanroom conditions and sterilised in a computer