--- product_id: 448189163 title: "Sterile Grain Bag" brand: "north spore" price: "903 kr" currency: NOK in_stock: true reviews_count: 8 url: https://www.desertcart.no/products/448189163-sterile-grain-bag store_origin: NO region: Norway --- # Proprietary organic millet & wheat blend Self-healing injection port with 0.2 micron filter Commercial-grade sterilization & contamination control Sterile Grain Bag **Brand:** north spore **Price:** 903 kr **Availability:** ✅ In Stock ## Summary > 🍄 Grow like a pro — faster, cleaner, and bigger harvests await! ## Quick Answers - **What is this?** Sterile Grain Bag by north spore - **How much does it cost?** 903 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/448189163-sterile-grain-bag) ## Best For - north spore enthusiasts ## Why This Product - Trusted north spore brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Effortless Inoculation:** Self-healing injection port allows clean, easy spore or liquid culture introduction without exposure. - • **Nutrient-Dense Organic Grains:** Hydrated millet and wheat berries provide superior nutrition to fuel robust mushroom development. - • **Contamination-Resistant Design:** Millet’s low endospore load plus sterile autoclaving and filter patch minimize risk of contamination. - • **Proven Spawn-to-Substrate Ratio:** Recommended 1:5 spawn to substrate ratio ensures consistent, high-quality mushroom cultivation success. - • **Mycologist-Formulated Growth Boost:** Optimized grain blend accelerates mushroom colonization and size for faster, bigger yields. ## Overview North Spore’s Organic Sterilized Mushroom Grain Bag features a mycologist-designed blend of organic millet and wheat berries, sterilized via commercial autoclave with verified sterility. Equipped with a self-healing injection port and 0.2 micron filter patch, it offers contamination-resistant, nutrient-rich spawn optimized for rapid, large mushroom growth. Ideal for serious cultivators seeking reliable, high-yield mushroom production. ## Description Our best-selling organic sterilized grain bag was formulated by mycologists to maximize the speed and size of your mushroom grow. Each spawn bag contains our proprietary blend featuring hydrated, supplemented, nutrient-rich organic millet and wheat berries. Grain bags are sterilized in a commercial-grade autoclave and sterility is verified using biological indicators and temperature sensors. Once colonized, we recommended 1 lb of grain spawn for every 5 lbs of manure or hardwood sterile substrate. (Higher inoculation rates may improve your success.) Be sure to mix colonized grain spawn thoroughly into your substrate. ## Features - FORMULATED FOR A BETTER GROW: Our organic sterilized grain bag was formulated by mycologists to maximize the speed and size of your mushroom grow. (All that's required is a spore syringe or liquid culture!) - NUTRIENT-RICH BLEND: Each spawn bag contains our proprietary grain blend featuring hydrated, nutrient-rich, organic millet and wheat berries. - MORE INOCULATON POINTS: Millet has a much lower endospore load than rye and wheat, making it less prone to contamination. And its small size means your spawn will have many more inoculation points for the same volume of grain. - JUST ADD SPORES: Bags also include a self-healing injection port for use with a spore or culture syringe plus a 0.2 micron filter patch to block airborne contaminants while providing even gas exchange. (Note: Color of injection port may vary.) - QUALITY YOU CAN TRUST: North Spore grain spawn bags are sterilized in a commercial-grade autoclave. Sterility is verified using biological indicators and temperature sensors. - SPAWN TO BULK RATIO: We recommended 1 lb of colonized grain spawn for every 5 lbs of manure or hardwood sterile substrate. We also recommend using 2.5-5ccs per 3 lb injection port bag. (See Inoculation and Colonization below for full details.) ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0B4X6NRVR | | Best Sellers Rank | #19,576 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden) #49 in Plant Grow Bags | | Brand Name | North Spore | | Customer Reviews | 4.2 4.2 out of 5 stars (505) 4.2 out of 5 stars | | Global Trade Identification Number | 00869275000289 | | Included Components | Micron patch | | Item Form | Bag | | Item Highlight | Sterlized Grain Bag with Millet & Wheat Berries, USDA Certified Organic, Self-healing Injection Port, 0.2 Micron Filter Patch | | Item Weight | 3 pounds | | Liquid Volume | 3 liters | | Manufacturer | North Spore | | Mixing Ratio | 1:5 | | Model Number | EQUIP-INJECTBAG-3LB-V2 | | Number Of Items | 1 | | Number Of Packs | 1 | | Part Number | EQUIP-INJECTBAG-3LB-V2 | | Specific Uses For Product | Mushroom cultivation | | Target Species | Mushrooms | | Unit Count | 48 Ounce | | Upc | 869275000289 | ## Product Details - **Brand:** North Spore - **Item Form:** Bag - **Item Weight:** 3 pounds - **Liquid Volume:** 3 liters - **Specific Uses For Product:** Mushroom cultivation ## Images ![Sterile Grain Bag - Image 1](https://m.media-amazon.com/images/I/81xRdZjXyuL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: does this come with spores?** A: No it does not. ## Customer Reviews ### ⭐⭐⭐⭐⭐ The Most Consistent Inoculation Grain Bag on the Market *by on Reviewed in the United States September 12, 2026* This grain bag stands out because the fundamentals are dialed in exactly where they matter. Moisture content is in the optimal range for rapid mycelial uptake — not oversaturated, not dehydrated — which keeps the grain kernels individually hydrated instead of collapsing into anaerobic clumps. That alone eliminates half the contamination vectors you see in lower‑quality bags.Sterilization is clearly done at proper thermal penetration. You can tell because the grain maintains structure, color, and smell without the caramelization or burst‑grain sludge that shows up when vendors rush their cycle or overload their autoclave. Even slow‑starting genetics show uniform colonization, which tells you the internal environment is stable and oxygen exchange through the filter patch is calibrated correctly.The self‑healing injection port actually behaves like it should — resealing cleanly without micro‑tears — which reduces external contamination risk during inoculation. Once colonization begins, the mycelium spreads in a predictable radial pattern, indicating even hydration and proper grain spacing.This is the kind of bag you choose when you want replicable results, not a gamble. Every variable that matters — hydration, sterilization, gas exchange, grain integrity — is consistent batch after batch.If you care about clean colonization curves and reliable outcomes, this bag performs exactly the way a proper inoculation substrate should. ### ⭐⭐⭐⭐⭐ Farewell *by on Reviewed in the United States August 29, 2026* Before I bought my first pressure cooker, these were true and reliable. Now that I can make my own spawn grain and substrate, I am happy to depart from the heavy investment these were due to plenty of errors on my part with contamination. Now I can make all the mistakes and it won’t cost me a fortune, maybe a small investment though.You can rely on these for consistency, giving you less of a chance of doing things wrong. I liked to inject the spores and put it right back in the box with a fold in the bag so the air filter is exposed to the grain spawn and the air. All the while keeping it in a closet with clean air. Just made things easier to keep everything clean. ### ⭐⭐⭐⭐⭐ piece of mind with this product *by on Reviewed in the United States May 14, 2026* seems to be working great. I tried to make my own at home but couldn't get it right. much easier to buy from these guys and know that it will work with no problems. mushrooms colonized great. good value for the money and even the appearance of the bag and shipping box shows care. ## Frequently Bought Together - North Spore Organic Sterilized Hydrated Grain Bag w/Self-Healing Injection Port | Sterile Mushroom Spawn Bags w/ 0.2 Micron Filter Patch | USDA Certified Organic (1 Pack) - ‘Boomr Bag’ (5 lb) Manure-Based Sterile Mushroom Bulk Substrate | Maximum Yield Formula | Made in USA | Grow Dung-Loving Mushrooms | North Spore - North Spore 'ShroomTek' + Spore Boostr All-in-One Mushroom Grow Bag | Grow Dung-Loving Mushrooms Like Magic Right in The Bag | Just Add Your Own Spores | Made by Mycologists --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.no/products/448189163-sterile-grain-bag](https://www.desertcart.no/products/448189163-sterile-grain-bag) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-09-17*