Sterilised grain mix ready for inoculation. Grain is NZ-grown wheat which is sourced from local farms right here in Canterbury.
Grain has been pressure cooked at 15PSI - cooled and sealed in our HEPA filtered lab. It is double bagged to ensure it arrives to you 100% contamination free.
This product works very well for both wood-loving as well as dung/compost-loving mushrooms.
If you are inoculating with >> liquid culture or spore syringe I suggest getting multiple 1kg bags -- inoculating multiple 1kg bags increases the chances of you getting a clean bag of spawn.
Use 1-10ml of liquid culture/ spore syringe per kg of grain to keep moisture content inside the bag within range. Too much liquid in the bag can encourage bacterial growth after inoculation.
Sorry, we do not offer custom grain mixes. Product will come with basic storage instructions.
Customers Also Buy other Sterile Substrate Bags:
>> Sterilised Grain in Filter Patch Bags - with Injection Ports
>> All in One Mushroom Growbags (sterile Grain & Compost)
>> Sterilised Compost in Filter Patch Bags
>> Sterilised Sawdust in Filter Patch Bags
Sterilised Grain for Mushroom Spawn
Sterilized and sealed in a filter-patch bag -- sent out in 1kg bags.
SporeShift ships by NZ Post courier - shipments are trackable.
Shipping is a flat rate of $10 NZ-wide - or FREE for orders over $75.




























