--- product_id: 448189163 title: "North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic" brand: "north spore" price: "₩85269" currency: KRW in_stock: true reviews_count: 8 category: "North Spore" url: https://www.desertcart.kr/products/448189163-north-spore-organic-sterilized-mushroom-grain-spawn-bag-3-lb store_origin: KR region: South Korea --- # Organic millet & wheat blend Self-healing injection port + 0.2 micron filter Sterilized with autoclave precision North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic **Brand:** north spore **Price:** ₩85269 **Availability:** ✅ In Stock ## Summary > 🍄 Grow like a pro — cultivate your own organic mushroom empire! ## Quick Answers - **What is this?** North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic by north spore - **How much does it cost?** ₩85269 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/448189163-north-spore-organic-sterilized-mushroom-grain-spawn-bag-3-lb) ## 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 - • **Smart Inoculation System:** Self-healing injection port and micron filter patch ensure sterile, hassle-free spore introduction. - • **Contamination-Resistant Design:** Millet’s low endospore load plus sterile autoclaving means cleaner, safer grows. - • **Mycologist-Formulated Growth Boost:** Engineered for faster, larger mushroom yields with expert precision. - • **Nutrient-Dense Organic Grain Blend:** Hydrated millet and wheat berries fuel robust mycelium expansion. - • **Optimized Spawn-to-Substrate Ratio:** Perfectly calibrated 1:5 spawn to substrate mix for maximum colonization efficiency. ## Overview North Spore’s Organic Sterilized Mushroom Grain Bag features a USDA-certified organic millet and wheat blend, sterilized via commercial autoclave for contamination-free mushroom cultivation. Designed by mycologists, it includes a self-healing injection port and 0.2 micron filter patch to optimize spore inoculation and gas exchange, enabling faster, larger mushroom growth with a recommended 1:5 spawn-to-substrate ratio. ## Description desertcart.com : North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic | Millet & wheat berries, self-healing injection port, 0.2 micron filter patch, trusted by 350K+ growers, Add your own culture : Patio, Lawn & Garden Review: The Most Consistent Inoculation Grain Bag on the Market - 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. Review: Good but a little pricey - No idea why people keep complaining about contamination and slow colonization, but I’ve bought multiple grain bags from North Spore and none of them have caused any issues. The only complaint I can agree with is the price. Overall, it’s a good product for beginners ## Features - MYCOLOGIST-FORMULATED MUSHROOM GRAIN SPAWN: Our organic millet and wheat berry blend is hydrated, nutrient-balanced, and sterilized in a commercial-grade autoclave so your culture has the cleanest possible start; just add a spore or liquid culture syringe - MILLET OUTPERFORMS RYE FOR CONTAMINATION RESISTANCE: smaller grain size means far more inoculation points per bag, lower endospore load, and more even mycelial spread, giving your mushroom grow bag a measurable head start over traditional rye-based substrates - BUILT-IN SELF-HEALING INJECTION PORT: the durable, repeatedly accessible port lets you inoculate in seconds without breaking sterility; pair it with the integrated 0.2 micron filter patch for passive gas exchange and continuous contamination defense during colonization - BATCH-TESTED AND VERIFIED STERILE: every production run is screened with biological indicators and temperature sensors, and the ingredients are USDA Certified Organic, so the 350,000+ growers who rely on North Spore bags never have to question what's inside - READY TO STORE, SIMPLE TO USE: no refrigeration needed; bags keep for several months at room temperature; when colonized, use roughly 1 lb of grain spawn per 5 lbs of bulk substrate for a smooth transition from spawn production to a full mushroom harvest ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B4X6NRVR | | Best Sellers Rank | #14,841 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #31 in Plant Grow Bags | | Brand | North Spore | | Brand Name | North Spore | | Customer Reviews | 4.1 out of 5 stars 509 Reviews | | Global Trade Identification Number | 00869275000289 | | Included Components | Micron patch | | Item Form | Bag | | Item Highlight | Millet & wheat berries, self-healing injection port, 0.2 micron filter patch, trusted by 350K+ growers, Add your own culture | | 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 | | UPC | 869275000289 | | 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 ![North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic - Image 1](https://m.media-amazon.com/images/I/81xRdZjXyuL.jpg) ![North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic - Image 2](https://m.media-amazon.com/images/I/71KuFQnCdzL.jpg) ![North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic - Image 3](https://m.media-amazon.com/images/I/613C8UQDQ0L.jpg) ![North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic - Image 4](https://m.media-amazon.com/images/I/71FyVGzXZjL.jpg) ![North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic - 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 ### ⭐⭐⭐⭐⭐ The Most Consistent Inoculation Grain Bag on the Market *by L***G on 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. ### ⭐⭐⭐⭐⭐ Good but a little pricey *by D***L on August 28, 2026* No idea why people keep complaining about contamination and slow colonization, but I’ve bought multiple grain bags from North Spore and none of them have caused any issues. The only complaint I can agree with is the price. Overall, it’s a good product for beginners ### ⭐⭐⭐⭐⭐ Farewell *by K***E on 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. ## 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.kr/products/448189163-north-spore-organic-sterilized-mushroom-grain-spawn-bag-3-lb](https://www.desertcart.kr/products/448189163-north-spore-organic-sterilized-mushroom-grain-spawn-bag-3-lb) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-09-29*