Uncle Myc's Rye Berry Grain Sterilized Mushroom Spawn Bag - 4 lb

Sterilized Rye Grain, Ready to Inoculate - 4 lb Bag

Preparing and sterilizing grain yourself takes time and equipment, and a single contaminant can ruin a batch. This spawn bag arrives sterilized and ready to use, so you can move straight to inoculation. A self-healing injection port and a filter patch help keep the contents clean while the culture colonizes.

At 4 lb, this bag suits hobbyists trying out spawn work and small-scale growers who want a manageable unit for expanding cultures. Growers running larger volumes can buy multiple bags and keep batches separate.

Key Features & Benefits

• 100% sterilized — arrives prepared so you skip the sterilizing step.
• Rye berry grain — a common grain base for spawn production.
• Self-healing injection port — lets you inoculate with a syringe while helping keep the bag closed afterward.
• Filter patch included — allows gas exchange while keeping contaminants out.

Who Should Use Uncle Myc's Rye Berry Grain Spawn Bag

Mushroom cultivators at any experience level who want a ready-made sterilized grain base. It fits beginners learning spawn handling and experienced growers who prefer to save preparation time.

About Uncle Myc's Rye Berry Grain Spawn Bag

Uncle Myc's offers this sterilized rye berry grain spawn bag in a 4 lb size, sold individually. It includes a self-healing injection port and a filter patch. The shipping weight is 4.3 lb.

Frequently Asked Questions

Q: Is the bag ready to use out of the box?
A: Yes. The grain is sterilized, so you can inoculate it once it arrives. Work in a clean space and wipe the injection port before use.

Q: What does the filter patch do?
A: The patch lets air move in and out of the bag, which supports gas exchange during colonization. It also helps block contaminants from entering.

Q: What is a self-healing injection port?
A: It is a section of the bag that lets you pass a needle through and then reseals. This helps maintain a clean environment inside the bag after inoculation.

Q: Why choose grain spawn over loose grain I prepare myself?
A: Preparing grain involves hydrating and sterilizing it, which takes time and equipment. A pre-sterilized bag removes those steps and gives you a consistent starting point.

Q: How many bags are in an order?
A: Each order is one bag weighing 4 lb.