--- product_id: 448189163 title: "North Spore Organic Sterilized Mushroom Grain Spawn Bag, 3 lb, USDA Organic" brand: "north spore" price: "$97.60" currency: USD in_stock: true category: "North Spore" url: https://www.desertcart.us/products/448189163-north-spore-organic-sterilized-mushroom-grain-spawn-bag-3-lb store_origin: US region: United States of America --- # 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:** $97.60 **Availability:** βœ… In Stock ## Summary > πŸ„ Grow like a pro β€” 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?** $97.60 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/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 - β€’ **Smart Inoculation System:** Self-healing injection port and micron filter patch ensure sterile, hassle-free spore introduction. - β€’ **Contamination-Resistant Design:** Millet’s low endospore load plus sterile autoclaving means cleaner, safer grows. - β€’ **Mycologist-Formulated Growth Boost:** Engineered for faster, larger mushroom yields with expert precision. - β€’ **Nutrient-Dense Organic Grain Blend:** Hydrated millet and wheat berries fuel robust mycelium expansion. - β€’ **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 ## 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 | #13,685 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #29 in Plant Grow Bags | | Brand | North Spore | | Brand Name | North Spore | | Customer Reviews | 4.1 out of 5 stars 508 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) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: does this come with spores?** A: No it does not. ## 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.us/products/448189163-north-spore-organic-sterilized-mushroom-grain-spawn-bag-3-lb](https://www.desertcart.us/products/448189163-north-spore-organic-sterilized-mushroom-grain-spawn-bag-3-lb) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-09-28*