Grain Spawn MycoBag


With over 16 years worth of experience, it’s safe to say that we know how to produce grain spawn to perfection!


Completely sterile and ready for inoculation

The self-healing injection port will close up as soon as the needle is removed, protecting the grain from contamination. Don’t pull the white filter off – it’s a HEPA filter for clean air exchange!

Can be used for mushroom spawn or as a substrate

What’s included
  • 1kg (Approx 1200ml) of Organic Rye Grain Substrate with added Gypsum and Coffee, within a HEPA-Filtered and Injectable MycoBag
  • Chlorhexidine Alcohol Wipe
How to use

Inject 3-4ml of gourmet spore or liquid culture solution into injection port on the bag


Product is made fresh to order, we aim to produce and dispatch within 7 working days max.
Only for use in cultivating species which are legal to grow – research the law.

Ask a question (4)

  1. Q What is the capacity in litres of the 1kg bag?... Read more answer now
    Asked on 22nd February 2021 2:38 pm

    It’s approximately 1200ml / 1.2L 

  2. Q Where would be the best place to store the bag post inoculation? Cupboard, Shelve etc ? Scared to...... Read more answer now
    Asked on 8th February 2021 8:57 pm
    A The filter should keep out contams, just make sure to never touch the filter and keep it dry. Temperature fluctuations aren’t a major concern if it’s only be a couple of degrees. If the room is going from cold to hot to cold then I can see issues - the more stable the temp is the better really. I would suggest a small room with an oil filled heater, this is what we use.. it’s more efficient and keeps the heating bills down.
  3. Q How much ml of solution is recommended for a 1kg bag... Read more answer now
    Asked on 30th January 2021 3:12 pm
    A Around 3-4ml of gourmet spore or culture solution :)
  4. Q How long does it take to colonise once it had been injected?... Read more answer now
    Asked on 26th January 2021 10:37 pm

    Depending on the size (1kg / 500g), genetics traits of your gourmet solution and factors such as temperature and the relative humidity in your home - it could take between 3-6 weeks. Breaking up the grain at 60-70% colonisation can help to speed up the process!

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