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Easy to use. Produced huge shrooms

Got good shrooms produced from this a couple of times. Easy to use.

Excellent!!!

Excellent customer service! Reached out to them with an issue and they responded and corrected the issue immediately!

Hole In Bottom

Had A Hole In The Bottom I Only Found Out Due To It Becoming Contaminated Right At The Crease In The Bottom. Didnt Realize It Until I Picked It Up After Leaving It Sit For A While Just To Experiment. I Picked It Up And Water Poured Out The Bottom Fold From The Condensation. Maybe Micropore Tape The Creases At The Bottom To Ensure No Contamination Gets In Just In Case

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Sterile Mushroom Grain Spawn Bag (5 Pound)

Name: Sterile Mushroom Grain Spawn Bag (5 Pound)
Brand: Mushroom Spawn Store
SKU: 43102432166067
Price: 25.99 USD
Availability: InStock
Rating: 4.57 (21 reviews)

$25.99 USD

~~$29.99 USD~~ $25.99 USD

Sale Sold out

Shipping calculated at checkout.

66% Larger than 3 pound bags

All Organic Grain

Injector Port Bags

Pay in 4 interest-free installments for orders over $50.00 with

Multi-Pack Discount 1 bag 2 bags 3 bags 4 bags 6 bags 9 bags

Product variants

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.

Free shipping offer is to the continental U.S. only.

We try to balance cost and speed, free orders ship ground and are typically delivered in 3-5 business days. For most items you can upgrade to USPS Priority for $10-40 (depending on weight) and get it in 1-3 days.

We ship Monday-Friday. Orders ship in 1-2 business days.

All products ship discreetly in plain brown boxes.

Due to the nature of the product we do not offer returns.

We do offer FREE REPLACEMENT or a refund for damage in shipment or contamination on arrival. Please inspect your order upon arrival and contact us immediately if the item is damaged or contaminated so that we can make it right.

Should items be damaged in shipping or arrive contaminated (unlikely), we will replace/refund them at no cost to you.

Please provide us a well lit high resolution photo of the damage and a photo of the injector port in your email to customer.service@mushroomspawnstore.com

We reserve the right to deny replacement of a bag if it looks like it has been injected with spores or liquid culture of any kind.