Description
Millet Grain Spawn Bag
Pre-sterilised and ready to inoculate with spores or liquid culture. Filled with clean, white French millet (sometimes called bird seed), perfect for mushroom cultivation. Every bag includes an alcohol swab and digital instructions. Please test your culture on a mea cups to ensure that your cultures are clean.
At a Glance
- Pre-sterilised, ready to inoculate on arrival
- Available as 1, 5, or 10 pack bundles
- Choose 500g or 1kg per bag
- Made with microplastic-free Unicorn bags (USA)
- Self-healing injection port on every bag
- Liquid culture and spores sold separately
Before You Buy
Do not purchase this product unless you already have a colonised agar plate, spore syringe, or liquid culture ready to go. Inoculate the bag as soon as it arrives.
Despite careful processing, small amounts of fibre or plastic from the bags may occasionally end up on the grains. The grains are also processed alongside other grain types and may contain pumpkin seeds or other seeds. Everything is fully sterilised, so this will not affect growth.
Rehydrating Your Bag
If your bag needs a little extra moisture, our sterile water syringes can help. They’re useful for:
- Bags that have been sitting for too long before inoculation
- Agar wedge inoculations that are struggling to fully colonise due to lack of moisture
- Bags accidentally left on a heat mat for too long
- Topping up when you only have a small amount of spore or liquid culture left
Why Millet Over Rye?
Millet is considered the gold standard for growing mushroom mycelium when making spawn, because millet kernels are smaller than rye.
To put that in perspective, 0.5kg of rye contains around 200 particles, while the same weight of millet contains around 500 particles. More particles means more inoculation points, the spots where mycelium begins to colonise the substrate.
Density: Hydrated millet has a density of 0.95 kg/L (950 kg/mยณ).
Your Options
Choose from:
- 1x pre-sterilised Millet Grain Bag
- 5x pre-sterilised Millet Grain Bag
- 10x pre-sterilised Millet Grain Bag
Each is available in 500g or 1kg.
Note: the 500g option is supplied as two separate 500g bags, totalling 1kg.
You Might Also Need
- Small Sealing Bag Clips, handy if you don’t use all the spawn in one go, or if you’ve cut a bag open to inoculate with agar and need to reseal it. Please note we cannot accept warranty claims on bags that have been opened.
- Disposable Gloves and Masks, for maintaining sterile conditions in your mycology projects.
- Biodegradable MEA Agar Cups, ideal for testing liquid cultures or spore syringes before inoculating your bags.
- Still Air Box (SAB), if you need a sterile workspace.
- Sterile Water Syringe, if you need to rehydrate the bags.
Bag Material
We use microplastic-free Unicorn Bags, made in the USA, for cleaner, safer cultivation.
Unicorn is the only bag in the world tested by Eurofins, a third-party lab in Europe, and certified to the stringent EN 1186 and USFDA 1520 standards for plastic migration into the substrate. Unicorn PP bags were tested at the highest level, 121ยฐC for 3.5 hours. No PE bags or other manufacturers’ PP bags have achieved this food safety standard, so you can be confident there are no microplastics in our kits.
Why Choose Us
- 100% clean, reputable millet grains
- 12-hour soak in chlorine-free water
- Washed five times for thorough cleaning
- 5% gypsum added to prevent clumping
- 10-minute simmer for easier mycelium digestion
- 5-hour gradual cooldown to avoid contamination in the steriliser
- Autoclave tape used to confirm sterility
- No fungicide-sprayed grains, sourced from a reputable supplier
- Intact grains with no breakages after sterilisation
- Optimal moisture level, measured at field capacity (50 to 55%)
- Self-healing injection port on each bag
- Careful inspection before shipping
- Microplastic-free grains
Bag Details
- Brand: Unicorn (4-T)
- Injection port included on both the 500g and 1kg variations
FAQ
Do I need liquid culture or spores already? Yes. This is grain spawn only and does not include mycelium. You’ll need a colonised agar plate, spore syringe, or liquid culture ready to inoculate on arrival.
What if I don’t use the whole bag at once? Use a Small Sealing Bag Clip to reseal it. Just note that opened bags aren’t covered by warranty.
Is this product microplastic free? Yes. Our Unicorn bags are tested by Eurofins and certified to EN 1186 and USFDA 1520 standards for plastic migration.
What’s Not Included
This item does not include mycelium. Check our other listings to add liquid culture to your order. We also offer Rye Grain Spawn if you’d prefer that option.
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