Organic Sterilized Grain Bag with Injection Port

$22.99 USD
Shipping calculated at checkout.

Successful mushroom cultivation begins with a high-quality, sterile substrate. Our Organic Sterilized Grain Bag with Injection Port offers indoor growers a dependable and convenient foundation for robust mycelial development and spawn production.

Each 3lb bag contains a meticulously prepared blend of organic grains, selected to provide optimal nutrition. This substrate undergoes rigorous sterilization to eliminate contaminants, ensuring a clean and ideal environment for your chosen culture to thrive.

The integrated, self-healing injection port streamlines inoculation. This durable port allows for safe, repeated access without compromising sterility, making transfers efficient for both hobbyists and commercial growers.

Ideal for creating grain spawn or as a foundational component for bulk substrates, this bag supports vigorous growth. It’s a critical first step towards a bountiful mushroom harvest, facilitating successful mycology projects.

Refer to our detailed cultivation guides for proper inoculation techniques and environmental conditions to maximize the potential of your sterilized grain bag.


Every purchase from Homestead includes our 100% Satisfaction Guarantee

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

100% Satisfaction Guarantee

If you're not happy with your Homestead purchase for any reason, we promise to make it right, simple as that.

We're not happy until you're happy.