More About This 3 lb Sterilized Rye Berry Grain Spawn Bag

This 3 lb sterilized rye berry grain spawn bag is fully hydrated and pressure-sterilized for clean, consistent colonization. Designed for cultivators who want reliability without extra prep work, it provides a stable foundation for grain expansion and bulk substrate transfer.

Why Rye Berries

Rye berries are widely used in mushroom cultivation because they offer:

• Strong moisture retention
• Balanced nutrient structure
• Ideal surface area for colonization
• Durable kernels that resist breakdown

Their structure allows even growth while maintaining airflow between grains.

Built for Clean Inoculation

Each bag includes:

• Self-healing injection port
• 5-micron filter patch for proper gas exchange
• Fully hydrated rye berries
• Heat-sealed sterile bag

The injection port allows sterile transfers without opening the bag, helping reduce contamination risk.

This rye berry grain spawn bag is ideal for

• Grain-to-grain transfers
• Monotub preparation
• Bulk substrate expansion
• Culture testing
• Agar-to-grain workflows

This grain bag supports a wide range of cultivation methods.

Why Choose Rye for mushroom cultivation

What You Receive

• 3 lb. hydrated rye berry grain
• Self-healing injection port
• 5-micron filter patch
• Sterile, sealed bag

Each unit is prepared in small batches with attention to quality control.

Storage & Handling

Store in a cool, dry place.

Inoculate promptly after arrival for best results.

Frequently Asked Questions

Is this bag pre-sterilized?

Yes. Each bag is sterilized and sealed before shipping.

Does it include an injection port?

Yes. A self-healing port is built in for clean inoculation.

What size filter patch is used?

Each bag uses a 5-micron filter for proper air exchange.

Can this be used for different mushroom varieties?

This grain bag supports a wide range of mushroom cultivation projects.