Sterilised White Millet Grain at Fungi Myco

White Millet Grain

for colonisation

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Key Features

  • Sterilised at 15 PSI for 3 hours to kill competing microorganisms and bacteria.
  • Includes self-healing port for inoculation via syringe.
  • Complete with filter for fresh air exchange (FAE)

What's in the Box

  • A Unicorn Bag of White Millet Grain complete with self-healing injection port and filter (depending on your selected size)
  • Online step-by-step instructions

Overview

White Millet Grain Spawn provides a nutrient-rich base for mushroom cultivation, with its small grains offering a high surface area for mycelial colonisation. Thoroughly rinsed and soaked, then supplemented with calcium sulphate to help prevent clumping and maintain grain structure.

Our Expert's Opinion

Tony, our resident mycologist, has this to say.

Pros

  • Fast Colonisation - A high surface area to volume ratio means more inoculation points for the mycelium.
  • Sufficient Nutrients - Provides a rich nutrient profile that supports vigorous mycelium growth.

Cons

  • Clumping - Breaks down more easily compared to rye or oats, potentially leading to clumping.

Tips

  • Reduce Contamination Risks — Shake the bag gently before use to redistribute moisture and prevent wet pockets, which can promote bacterial contamination. Let the bag fully colonise before handling and only open it in a sterile environment, like a still air box or in front of a laminar flow hood.
  • Kickstart Colonisation - If your bag stops colonising and stalls, it’s usually because of positive pressure on the mycelium. Turn the bag on it’s side to change the pressure point and allow your mycelium the room it needs to spread.

Select the right bag size

Something that other suppliers might not tell you is that if you are looking to inoculate your spores or liquid culture then a big bag would be a big mistake. The surface area is larger. Colonisation takes longer. You'll likely lose the batch. Start small for inoculation!

For other purposes such as grain-to-grain transfers or bulk grows - bigger bags make more sense.

Save yourself time & money — get the right bag for the job!

Grain Size: 750gGrain Size: 1kgGrain Size: 1.5kg

Inoculation

G2G Transfers

Bulk Grows

Inoculating your Grain

Using sterile practice, inject your mushroom spore syringe through the self-healing port and let the magical mycelium do its thing. Once fully colonised, mix the grain with your bulk substrate

Of course, this all assumes you actually want to grow mushrooms. You could also fill a balloon with grain and make an eco-friendly stress ball, half-fill a container and make homemade maracas, or hell, feed it to the birds.

But whatever you do, for the love of God – do not use your White Millet Grain to be growing magic mushrooms!!

Watch a short video on how to inoculate grain with a spore syringe.

Best for Storage

  • For best results use immediately
  • If not using right away — store somewhere cool and dark, ideally 10–21°C, away from direct sunlight and heat sources. Refrigeration (2–8°C) is fine and can help extend freshness; as long as the bag stays sealed and dry
  • Keep in the original sealed bag until you're ready to use — this keeps the item sterile and protected from pests
  • Do NOT freeze
  • Correctly stored, this item will last around 8 weeks

Payment

We currently only accept bank transfer — full details are provided upon checkout.

Why don't we accept card payments? Unfortunately despite progress, the industry is still heavily stigmatised (from banks) which means that even payment gateways such as PayPal don't provide a service for any spore provider based in the UK (also the reason that you cannot buy these spores on the high street).

We encourage you to read our customer reviews to see the experiences others have had with us.

Still got questions? — reach out to us.

Delivery

In the UK, please allow 2-3 days delivery time from dispatch. Outside the UK times can vary greatly - so it is better to order well in advance.

We currently deliver to the following countries: Austria, Belgium, Czechia, France, Greece, Italy, Netherlands, Spain, U.S.

See our full delivery policy

Returns

Unopened items or otherwise damaged or defective products can be returned within 30 days.

Please contact us straight-away and we'll be sure to put things right.

See our returns policy