Sterilized Grain
Sterilized Grain
Sterilized Grain
Sterilized Grain

Sterilized Grain

Regular price$24.99
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Embark on your mushroom cultivation adventure with our Grain Bag.

  • This versatile bag comes filled with high-quality grains ready for inoculation with your chosen spores or liquid culture.
  • Provides a reliable foundation for cultivating a variety of gourmet and medical mushrooms at home.
  • Makes injection easy with our self-healing port.
  • Comes with instructional videos and access to our product experts.

We are fully committed to the quality of our products. Should you have any inquiries or apprehensions about the product, please reach out to us. We can help troubleshoot, resolve any issues, provide replacements, or process a refund.

To request a replacement, refund, or exchange please email

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Frequently Bought Together

About the Bag

Optimal Protection

Sterile Packaging

Our bags are carefully packed in a sterile environment to minimize outside contaminants.


High Airflow Filter

Our airflow filter patch gives your substrate and mycelium fresh air while maintaining high humidity levels and acting as a barrier against contaminants.

The Perfect Blend

Nutrient Rich

Our unique wild bird seed mix includes sunflower seeds, millet and cracked corn. These combine to provide a well-rounded diet for your mushrooms contribute to high-yield colonization


Self Healing Injection Port

Our innovative injection port is designed to facilitate a seamless and contamination-free inoculation process.


Expert Guidance

Eliminate uncertainty with first-class customer service and step-by-step instructional videos walking you through every step.


The grain acts like a foundation, giving mushroom spores a place to start growing. It’s like soil for plants, but for mushrooms!

Stored properly, our grain can last for several months. Keep it in a cool, dry place until you’re ready to use it.

Absolutely! Our grain is prepped and ready for you to start growing mushrooms. Just add your mushroom spores or liquid culture.

It’s best to use fresh grain for each grow to ensure the best mushroom quality and to avoid contamination.

Our grain is versatile! It works well for a variety of mushrooms, from oysters to shiitakes.

Growing Success Stories

I’m a repeat customer. Their kits are top-notch, and I love the variety they offer.

Ben A. 

I've used Rare Earth grain for tons of grows. By far the most efficient.

Michelle K.

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