Sterilized Organic Millet Grain Bags | 6-Pack

Sterilized Organic Millet Grain Bags - 6-Pack Ready for Inoculation

These pre-sterilized organic millet grain bags are ready to inoculate the moment they arrive. Each 3.5 lb bag contains properly hydrated, sterilized organic millet grain sealed in a filter patch grow bag for optimal gas exchange. No washing, no soaking, no pressure cooking. Just add your liquid culture or agar wedge in clean conditions and let the mycelium colonize. Produced in our CFIA-licensed facility in Brantford, Ontario.

Why Millet Grain

Millet is one of the best grains for mushroom spawn production. Its small kernel size creates more inoculation points per pound than larger grains like rye or wheat, which means faster colonization of your substrate when you use the finished spawn. Millet also has a smooth outer hull that resists clumping, making it easier to shake and break up during colonization. Our organic millet is Canadian sourced and carefully processed to the right moisture content for reliable mycelium growth.

How to Use

Inoculate

Working in front of a laminar flow hood or inside a still air box, inject liquid culture through the bag or open and add an agar wedge. For liquid culture, 5-10 mL per bag is sufficient.

Incubate

Seal the injection site with micropore tape or reseal the bag. Store at 20-24 C in a clean space. Shake the bag once at 30% colonization to redistribute the mycelium and speed up the process. Full colonization typically takes 2-3 weeks.

Use your spawn

Fully colonized grain spawn can be used to inoculate mushroom substrate blocks, do grain-to-grain transfers to expand your spawn supply, or inoculate outdoor beds and logs. Each 3.5 lb bag will inoculate approximately 20-35 lbs of substrate at a 10-15% spawn ratio.

What You Get

• Quantity: 6 bags per pack
• Weight: 3.5 lbs per bag (21 lbs total)
• Grain: certified organic millet
• Sterilization: pressure sterilized and sealed in filter patch grow bags
• Shelf life: inoculate within 2 weeks of arrival for best results, or freeze for up to 3 months
• Produced in: CFIA-licensed facility, Brantford, Ontario

Who Is This For

These sterilized mushroom grain bags are perfect for growers who want to produce their own spawn without investing in sterilization equipment. They are also ideal for experienced cultivators who want to free up their autoclave for substrate work and let us handle the grain prep. If you already have a pressure cooker and prefer to sterilize your own grain, see our bulk organic millet grain for a more cost-effective option.

Compatible with all gourmet and medicinal mushroom species. Pairs well with our liquid cultures for a complete spawn production workflow. Made in Canada. Ships free across Canada.