Uncle Myc's Millet Grain Mushroom Spawn Bag - 4 lb - Pre-Sterilized - Self-Healing Injection Port - Filter Patch

Pre-Sterilized Millet Grain Ready to Inoculate - 4 lb Bag

Preparing and sterilizing grain yourself takes time, equipment and care, and one slip can ruin a batch. This spawn bag arrives pre-sterilized, so you can inoculate it directly through the self-healing injection port. The built-in filter patch lets the bag exchange gas while keeping contaminants out.

The 4 lb bag suits growers who want enough grain to expand cultures or start a few substrate batches without sourcing bulk quantities. It works for newer growers learning spawn handling and for experienced growers who want to skip grain prep.

Key Features & Benefits

• Pre-sterilized grain — removes the prep and sterilizing step so you start from a clean base.
• Millet grain — small kernels provide many inoculation points for mycelium to spread from.
• Self-healing injection port — lets you inoculate without opening the bag.
• Filter patch included — allows gas exchange while helping keep contaminants out.

Who Should Use Uncle Myc's Millet Grain Spawn Bag

Mushroom cultivators who want ready-to-inoculate grain spawn, from beginners to experienced growers, in a manageable 4 lb bag.

About Uncle Myc's Millet Grain Spawn Bag

Uncle Myc's offers this spawn bag filled with 4 lb of millet grain. It is pre-sterilized and includes a self-healing injection port and a filter patch. It ships at 4.3 lb and is sold individually.

Frequently Asked Questions

Q: Is the grain already sterilized?
A: Yes. The bag is pre-sterilized, so you do not need to sterilize it before use. Keep the bag intact until you inoculate.

Q: What does the injection port do?
A: The self-healing port lets you introduce culture through the bag wall with a syringe. It reseals afterward to help maintain sterility.

Q: What is the filter patch for?
A: The patch allows gas exchange so the growing mycelium can breathe. It is designed to keep contaminants from entering the bag.

Q: Why choose millet as a spawn grain?
A: Millet kernels are small, so a bag holds many kernels and many points where mycelium can start growing. Many cultivators choose it for that reason.

Q: What is grain spawn?
A: Grain spawn is sterilized grain colonized by mycelium. Cultivators use it to inoculate larger volumes of substrate.