--- product_id: 448189163 title: "Sterile Grain Bag" brand: "north spore" price: "SAR 188" currency: SAR in_stock: true reviews_count: 8 category: "North Spore" url: https://www.desertcart.com.sa/products/448189163-sterile-grain-bag store_origin: SA region: Saudi Arabia --- # 3 lbs nutrient-rich organic grain blend Self-healing injection port with 0.2 micron filter Commercial-grade sterilization & contamination control Sterile Grain Bag **Brand:** north spore **Price:** SAR 188 **Availability:** βœ… In Stock ## Summary > πŸ„ Grow like a pro β€” sterile, speedy, and stress-free spawn bags! ## Quick Answers - **What is this?** Sterile Grain Bag by north spore - **How much does it cost?** SAR 188 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.sa](https://www.desertcart.com.sa/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 - β€’ **Effortless Inoculation:** Self-healing injection port with micron filter for safe, easy spore introduction - β€’ **Trusted Quality Assurance:** Sterility verified with biological indicators and temperature sensors for consistent results - β€’ **Optimized Mycology Formula:** Formulated by experts to maximize mushroom growth speed and size - β€’ **Premium Organic Grain Blend:** Hydrated millet & wheat berries for superior nutrition and spawn health - β€’ **Contamination-Resistant Design:** Millet’s low endospore load plus sterile autoclaving ensures clean colonization ## Overview North Spore’s Sterile Grain Bag is a USDA certified organic, mycologist-formulated spawn bag featuring a nutrient-rich millet and wheat blend. It includes a self-healing injection port with a 0.2 micron filter patch to prevent contamination while allowing gas exchange. Sterilized in a commercial autoclave and verified for sterility, this 3 lb bag is designed to maximize mushroom growth speed and yield, making it the trusted choice for serious cultivators. ## Description Product description Features Self-healing injection port 0.2 micron filter patch Hydrated to a target of 50% USDA certified organic Nutrient-rich organic millet and wheat berry blend Maximum Yield Blend 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. Grain Spawn to Substrate Ratio 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. Grain Bag Inoculation To inoculate the grain bag, simply inject your spore or culture syringe through the port in a sterile location. We always recommend clean hands and latex gloves to reduce the introduction of contaminants. Grain Bag Colonization Allow your bag to colonize in a cool location out of direct sunlight. Temperature for incubation shouldn't exceed 75 degrees F or dip below 55 degrees F. After a couple of weeks, you should start to see mycelium growing on the grain. Breaking Up Your Spawn You'll notice the white mycelium growing outward from the injection point. When it has grown three to four inches you should, without opening the bag, carefully break up the colonized grain and mix it into the uncolonized grain. This will dramatically speed up the colonization process. Storing Your Grain Bag If you're not ready to use immediately, grain bags should be stored at room temperature out of direct sunlight. No refrigeration is necessary. They can also be stored for several months before use. When Is Your Bag Ready? When the bag is completely white with mycelium your spawn is ready to use. This may take a couple of weeks to a month or more depending on the species and vigor of your mushroom culture. Review: Trustworthy Bag - Self healing injection port is working solid, no contams 3 weeks post injection- which also points to the fact that they autoclaved this thing well. It's been well over a month since I got it and that means it's probably been a month and a week since it was packed. The price is a steal for the work I avoided, and considering how little output I do it's just easier. North Spore is solid and they've been in the game for years, I wouldn't shave off a couple dollars to get a version that I would even have to worry about mold with. It was good to go out of the box, just unfold it gently and don't get your filter wet. I don't know if it's waterproof, I always assume no. Oh, no big moisture spots or visible dryness either if you're worried about that. Review: I trust North Spore. Plain and simple. - Haven't had a problem with a bag yet! I've been able to colonize and spawn to bulk with every single one. I will say this, North Spore is a brand i trust. There's plenty of other bigger and cheaper grain bags on here..but I know this works, it's clean, and if there is ever a problem, North Spore will take care of it. Not if you inoculated and nothing grew...im talking about if the grains don't look right, the bag isnt vacuum sealed, or it smells bad. Quality is 10/10. It does its magic thing every single time :) ## 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 | #25,929 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #102 in Plant Grow Bags | | Brand | North Spore | | Brand Name | North Spore | | Customer Reviews | 4.2 out of 5 stars 471 Reviews | | Global Trade Identification Number | 00869275000289 | | Included Components | Micron patch | | Item Form | Bag | | 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 | | Part Number | EQUIP-INJECTBAG-3LB-V2 | | Specific Uses For Product | Mushroom cultivation | | Target Species | Mushrooms | | Unit Count | 48 Ounce | ## 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) ![Sterile Grain Bag - Image 2](https://m.media-amazon.com/images/I/71KuFQnCdzL.jpg) ![Sterile Grain Bag - Image 3](https://m.media-amazon.com/images/I/613C8UQDQ0L.jpg) ![Sterile Grain Bag - Image 4](https://m.media-amazon.com/images/I/71FyVGzXZjL.jpg) ![Sterile Grain Bag - Image 5](https://m.media-amazon.com/images/I/81jFAG5hJOL.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 ### ⭐⭐⭐⭐⭐ Trustworthy Bag *by A***M on November 4, 2025* Self healing injection port is working solid, no contams 3 weeks post injection- which also points to the fact that they autoclaved this thing well. It's been well over a month since I got it and that means it's probably been a month and a week since it was packed. The price is a steal for the work I avoided, and considering how little output I do it's just easier. North Spore is solid and they've been in the game for years, I wouldn't shave off a couple dollars to get a version that I would even have to worry about mold with. It was good to go out of the box, just unfold it gently and don't get your filter wet. I don't know if it's waterproof, I always assume no. Oh, no big moisture spots or visible dryness either if you're worried about that. ### ⭐⭐⭐⭐⭐ I trust North Spore. Plain and simple. *by C***W on July 31, 2025* Haven't had a problem with a bag yet! I've been able to colonize and spawn to bulk with every single one. I will say this, North Spore is a brand i trust. There's plenty of other bigger and cheaper grain bags on here..but I know this works, it's clean, and if there is ever a problem, North Spore will take care of it. Not if you inoculated and nothing grew...im talking about if the grains don't look right, the bag isnt vacuum sealed, or it smells bad. Quality is 10/10. It does its magic thing every single time :) ### ⭐⭐⭐⭐⭐ Excellent *by T***E on March 15, 2025* The only grain I will buy. Nice and tightly packed with fresh hydrated and sterile millet. I inoculated it with a spore syringe from a reputable supplier. Set the temp to 77, and let it sit in the dark cozy closet. I was careful to minimize possibility of contam. Sprayed the bag all over w alcohol first thing. Applied fire to the syringe. Sprayed the grow room w isopropyl alcohol too. You cant do too much sterilizing. Use sterile gloves if you have them. Mycelium noticeable in a week. Spreads rapidly. After the second week, I had about 2 pounds of pure, fresh fluffy mycelium. Went on to grow the biggest flush ever in a monotub. Happy growing! ## 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) - β€˜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? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.sa/products/448189163-sterile-grain-bag](https://www.desertcart.com.sa/products/448189163-sterile-grain-bag) --- *Product available on Desertcart Saudi Arabia* *Store origin: SA* *Last updated: 2026-05-28*