---
product_id: 448189163
title: "Sterile Grain Bag"
brand: "north spore"
price: "€ 42.43"
currency: EUR
in_stock: true
reviews_count: 8
category: "North Spore"
url: https://www.desertcart.ie/products/448189163-sterile-grain-bag
store_origin: IE
region: Ireland
---

# 3L 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:** € 42.43
**Availability:** ✅ In Stock

## Summary

> 🍄 Grow like a pro—sterile, speedy, and stress-free spawn bags for the modern mycologist!

## Quick Answers

- **What is this?** Sterile Grain Bag by north spore
- **How much does it cost?** € 42.43 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/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

- • **Proven Sterility Assurance:** Commercial autoclave sterilization verified by biological indicators for peace of mind.
- • **Optimized Organic Grain Blend:** Hydrated millet & wheat berries maximize mushroom growth speed and size.
- • **Contamination-Resistant Design:** Millet’s low endospore load plus a 0.2 micron filter patch ensure a clean, reliable spawn.
- • **Ideal Spawn-to-Substrate Ratio:** Use 1 lb spawn per 5 lbs substrate for consistent, high-yield mushroom cultivation.
- • **Ready-to-Inoculate Convenience:** Self-healing injection port lets you add spores effortlessly without risking contamination.

## Overview

North Spore’s Sterile Grain Bag is a USDA certified organic, 3-liter spawn bag formulated by mycologists with a proprietary millet and wheat blend. It features commercial-grade autoclave sterilization, a self-healing injection port, and a 0.2 micron filter patch to prevent contamination while allowing gas exchange. Designed for fast, large mushroom yields, it’s perfect for professional and hobbyist growers seeking reliable, ready-to-use spawn.

## Description

desertcart.com : 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) : Patio, Lawn & Garden

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: Great Quality Spawn Bag – Perfect for Growing Lion’s Mane - 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!

## 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 | #10,745 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #31 in Plant Grow Bags |
| Brand | North Spore |
| Date First Available | June 23, 2022 |
| Global Trade Identification Number | 00869275000289 |
| Item Form | Bag |
| Item Weight | 3 pounds |
| Item model number | EQUIP-INJECTBAG-3LB-V2 |
| Liquid Volume | 3 Liters |
| Manufacturer | North Spore |
| Number of Items | 1 |
| Package Dimensions | 6.54 x 5.24 x 5 inches |
| Specific Uses For Product | Mushroom cultivation |
| 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/41WHnkeIiQL.jpg)
![Sterile Grain Bag - Image 2](https://m.media-amazon.com/images/I/51IW7ax1mnL.jpg)
![Sterile Grain Bag - Image 3](https://m.media-amazon.com/images/I/51KsVuMJuvL.jpg)
![Sterile Grain Bag - Image 4](https://m.media-amazon.com/images/I/51Z3K2O21-L.jpg)
![Sterile Grain Bag - Image 5](https://m.media-amazon.com/images/I/613C8UQDQ0L.jpg)

## 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.

### ⭐⭐⭐⭐⭐ Great Quality Spawn Bag – Perfect for Growing Lion’s Mane
*by J***B on May 18, 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!

### ⭐⭐⭐⭐⭐ 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 :)

## 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.ie/products/448189163-sterile-grain-bag](https://www.desertcart.ie/products/448189163-sterile-grain-bag)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-31*