---
product_id: 712419027
title: "3lb Organic Hydrated Sterilized Grain Bag w/Self-Healing Injection Port | Sterile Mushroom Spawn Bag w/ 0.2 Micron Filter Patch | USDA Certified Organic"
brand: "north spore"
price: "€ 130.59"
currency: EUR
in_stock: true
reviews_count: 5
category: "North Spore"
url: https://www.desertcart.gr/products/712419027-3lb-organic-hydrated-sterilized-grain-bag-w-self-healing-injection
store_origin: GR
region: Greece
---

# 3lb organic millet & wheat blend 50% optimal moisture content 0.2 micron sterile filter patch 3lb Organic Hydrated Sterilized Grain Bag w/Self-Healing Injection Port | Sterile Mushroom Spawn Bag w/ 0.2 Micron Filter Patch | USDA Certified Organic

**Brand:** north spore
**Price:** € 130.59
**Availability:** ✅ In Stock

## Summary

> 🍄 Grow like a pro — sterile, organic, and foolproof spawn bags for next-level fungi success!

## Quick Answers

- **What is this?** 3lb Organic Hydrated Sterilized Grain Bag w/Self-Healing Injection Port | Sterile Mushroom Spawn Bag w/ 0.2 Micron Filter Patch | USDA Certified Organic by north spore
- **How much does it cost?** € 130.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/712419027-3lb-organic-hydrated-sterilized-grain-bag-w-self-healing-injection)

## 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

- • **Precision Hydration at 50%:** Optimized moisture level ensures rapid and healthy colonization every time.
- • **Self-Healing Injection Port:** Inject spores effortlessly while maintaining a contamination-proof environment.
- • **Ready-to-Use & USDA Certified:** Certified organic, sterilized in commercial autoclaves, and designed for hassle-free mushroom cultivation.
- • **Proprietary Organic Grain Blend:** Harness the power of nutrient-rich millet and wheat berries for robust mycelium growth.
- • **Sterile 0.2 Micron Filter Patch:** Advanced gas exchange with airtight protection against airborne contaminants.

## Overview

North Spore’s 3lb Organic Hydrated Sterilized Grain Bag features a USDA certified organic millet and wheat blend hydrated to 50% moisture, equipped with a self-healing injection port and a 0.2 micron sterile filter patch. Commercially autoclaved for guaranteed sterility, this spawn bag accelerates mushroom mycelium colonization while preventing contamination, making it the go-to choice for serious cultivators seeking reliable, high-quality organic spawn.

## Description

Our premium 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, nutrient-rich organic millet and wheat berries. 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.) MIXING WITH SUBSTRATE We recommended 1 lb of colonized grain spawn for every 5 lb of manure or hardwood substrate. 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. (It is best practice to wait a minimum of 1 week after arrival before injecting grain bags to ensure they were not compromised during transit.) COLONIZATION Allow your bag to colonize in a cool location out of direct sunlight. The 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. 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. 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 culture. STORING 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. STERILIZATION Our grain spawn bags are sterilized in a commercial-grade autoclave. Sterility is verified using biological indicators and temperature sensors.

Review: 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: Have ordered plenty of the sterile grain bags from North Spore, the bags are always sterile, the bag itself is really a high quality bag, and personally my special spores (IYKYK) have continued to take very well to these. Also the coupon to ITW was super helpful, if you’re looking for good spores ITW and North Spore is an absolutely UNBEATABLE cost-benefit! The fungi loves it, and that is a TRIP…

## Features

- PREMIUM ORGANIC INGREDIENTS: Each spawn bag contains our proprietary blend featuring hydrated, nutrient-rich organic millet and wheat berries.
- OPTIMAL MOISTURE CONTENT: Without moisture, mycelium will not colonize. All of our grain spawn bags are hydrated to a target of 50%.
- SELF-HEALING INJECTION PORT: Bags 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.
- INOCULATION: To inoculate the grain bag, simply inject your spore or culture syringe through the port in a sterile location. We also recommend using 2.5-5ccs per 3 lb grain bag.
- COLONIZATION: Allow your bag to colonize in a cool location out of direct sunlight. The 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.
- FOR BETTER RESULTS: When the mycelium 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. When the bag is completely white with mycelium your spawn is ready to use.
- MIXING WITH SUBSTRATE: We recommended 1 lb of colonized grain spawn for every 5 lb of manure or hardwood substrate.
- STORING YOUR BAG: 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.
- 100% GUARANTEE: We stand by the integrity of our products and we want to ensure that you are completely satisfied with your North Spore experience. If you have any issues or questions, just reach out to us. We want your grow to be a success!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B4X6NRVR |
| Customer Reviews | 4.3 4.3 out of 5 stars (438) |
| Date First Available | 19 October 2024 |
| Ingredients | Organic blend of millet and wheat berries, supplements |
| Item model number | EQUIP-INJECTBAG-3LB-V2 |
| Manufacturer | North Spore |
| Package Dimensions | 16.6 x 13.3 x 12.7 cm; 1.36 kg |
| Part number | EQUIP-INJECTBAG-3LB-V2 |

## Product Details

- **Brand:** North Spore
- **Item form:** Granules
- **Item weight:** 3 Pounds
- **Liquid volume:** 3 Liters
- **Specific uses for product:** Mushroom cultivation

## Images

![3lb Organic Hydrated Sterilized Grain Bag w/Self-Healing Injection Port | Sterile Mushroom Spawn Bag w/ 0.2 Micron Filter Patch | USDA Certified Organic - Image 1](https://m.media-amazon.com/images/I/81xRdZjXyuL.jpg)

## Questions & Answers

**Q: does this come with spores?**
A: No it does not.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by A***M on 4 November 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.

### ⭐⭐⭐⭐⭐ Review
*by D***N on 1 March 2026*

Have ordered plenty of the sterile grain bags from North Spore, the bags are always sterile, the bag itself is really a high quality bag, and personally my special spores (IYKYK) have continued to take very well to these. Also the coupon to ITW was super helpful, if you’re looking for good spores ITW and North Spore is an absolutely UNBEATABLE cost-benefit! The fungi loves it, and that is a TRIP…

### ⭐⭐⭐⭐⭐ Review
*by J***B on 18 May 2025*

This sterilized, hydrated grain spawn bag worked perfectly for my lion’s mane mushroom grow! It arrived well-sealed, clean, and fully hydrated—ready to inoculate right out of the box. Colonization was fast and even, and I got a great yield. Super convenient and reliable for home cultivation. Highly recommend for any mushroom grower!

## 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

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-03-09*