5-Pound Mushroom Grain Spawn Bags

Get started on your mushroom-growing journey with our premium mushroom grain spawn bags! We store our bulk grain spawn in superior-quality Unicorn bags made in the USA, with a validated 0.5-micron filter patch to let air in and contaminants out.

• 60% more spawn than your standard grain spawn bag!

• 100% organic rye grains, thoroughly sterilized using temperature probes for optimal growth

• Perfectly hydrated grains for quick colonization

• Self-healing injection port bags for hassle-free inoculation and minimal contamination risk

• Clear usage instructions for beginner mushroom growers

• 5-pound bags of grain

Why Use Our Sterilized Grain Spawn Bags

Top-Quality Grains

With our premium quality mushroom grain spawn bags, you can enjoy a bountiful harvest even on your first try. We hydrate and sterilize each product to maximise success.

Eco-friendly Practices

We help protect Mother Nature through a 100% sustainable production process. All our grains are organically sourced from local vendors, so we can do our part in saving the planet.

Comprehensive Support

We'll assist you every step of the way so you can grow your mushrooms safely even as a beginner. Our knowledgeable customer support is always here to answer any questions.