--- product_id: 148907055 title: "Sterile Manure Substrate" brand: "north spore" price: "₩118707" currency: KRW in_stock: true reviews_count: 8 category: "North Spore" url: https://www.desertcart.kr/products/148907055-sterile-manure-substrate store_origin: KR region: South Korea --- # 5 lb sterile manure-based substrate Optimized for max mushroom yield Mycologist-formulated & trusted Sterile Manure Substrate **Brand:** north spore **Price:** ₩118707 **Availability:** ✅ In Stock ## Summary > 🍄 Elevate your grow game with Boomr Bag – where science meets bountiful harvests! ## Quick Answers - **What is this?** Sterile Manure Substrate by north spore - **How much does it cost?** ₩118707 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/148907055-sterile-manure-substrate) ## 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 - • **Boost Your Harvest:** Sterile, manure-rich substrate engineered to maximize mushroom fruiting and size. - • **Trusted by Experts:** Years of refinement and 1,200+ 4.2-star reviews prove its reliability and performance. - • **Perfect Spawn Ratio:** Recommended 1:2-3 spawn to substrate ratio for consistent, high-yield results. - • **Proprietary Premium Blend:** Unique composted horse manure and coco coir mix, perfected for dung-loving species. - • **Versatile Growing Options:** Ideal for monotubs, filter bags, outdoor beds, or direct bag/tray cultivation. ## Overview North Spore's Boomr Bag is a 5 lb sterile, manure-based bulk substrate designed by mycologists to significantly increase mushroom yields. Featuring a secret proprietary blend of composted horse manure and coco coir, it supports dung-loving mushroom species and is trusted by growers worldwide. Suitable for various cultivation methods, it offers a reliable spawn-to-substrate ratio for optimal fruiting, making it a top choice for serious mushroom cultivators. ## Description desertcart.com: North Spore 'Boomr Bag' Sterile Mushroom Bulk Substrate, Manure-Based, 5 lb | Filter Patch Bag for Monotubs & Bulk Grows, Dung-loving Species, Mycologist-formulated, Made in USA : Pet Supplies Review: Very Good - The best substrate I have ever used, good yield and large fruits. Review: The product is the best - Price seems to be in little inflated to make up for delivery. But excellent product. ## Features - INCREASE YOUR YIELD: Our best-selling Boomr Bag is a sterile manure-based bulk mushroom substrate formulated by mycologists to increase the yield of your grow. - PREMIUM MANURE BLEND: It features a proprietary blend of composted horse manure, coco coir, and several quality substrate supplements (although we keep the exact blend a secret!) - TRUSTED BY GROWERS: Over several years, Boomr Bag has been perfected for dung-loving mushroom species and is widely-trusted by mushroom growers. Note: Substrate is hydrated to field capacity. - FOR EVERY TYPE OF GROWER: Use Boomr Bag in monotubs, filter bags, and outdoor beds. Or, grow mushrooms from the bag or tray in a humidity-controlled grow room or Martha set up. - SPAWN TO BULK RATIO: We recommended mixing 1 colonized grain spawn bag with 2-3 Boomr Bags. (Higher inoculation rates may improve your success.) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07TTV73RM | | Best Sellers Rank | #22,377 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #254 in Garden Soil | | Brand | North Spore | | Brand Name | North Spore | | Customer Reviews | 4.2 out of 5 stars 1,245 Reviews | | Global Trade Identification Number | 00851555008931 | | Item Highlight | Filter Patch Bag for Monotubs & Bulk Grows, Dung-loving Species, Mycologist-formulated, Made in USA Item Highlight Filter Patch Bag for Monotubs & Bulk Grows, Dung-loving Species, Mycologist-formulated, Made in USA See more | | Item Weight | 5 pounds | | Manufacturer | North Spore | | Number of Packs | 1 | | Style | Sterile substrate | | Style Name | Sterile substrate | | UPC | 851555008931 | | Unit Count | 80 Ounce | | Volume | 4.75 liters | ## Product Details - **Brand:** North Spore - **Global Trade Identification Number:** 00851555008931 - **Item Weight:** 5 pounds - **Style:** Sterile substrate - **UPC:** 851555008931 ## Images ![Sterile Manure Substrate - Image 1](https://m.media-amazon.com/images/I/71UZ-9FQZGL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: how long can the substrate last in the bag?** A: Not long mine was green when it arrived. **Q: Do I just need this kit and a spore syringe to grow or would I need something different or additional?** A: You would want something like rye berries or straw depending on the mushroom. To inoculate with a spore syringe to colonize then mix in this substrate but if you have myceilium already colonized you would just mix it into this substrate. You wouldn't want to just inject this with spores, from my understanding. **Q: How long will this product last before use when stored properly? And what would be recommended storage if possible?** A: The sooner you use it, the better. Because it's a sterilized substrate, it will probably be fine for 6 months to a year. I'd keep it in a cool dry place. This is a good option and I've been pleased with the product. **Q: Where do I acquire a rye, vermiculite, pearlite substrate? Thanks** A: amazon, home depot, hydroponic store...... but if you are planning to add it to this substrate you would need to sterilize it. This bag is made to be used without adding anything to it ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very Good *by R***. on August 21, 2026* The best substrate I have ever used, good yield and large fruits. ### ⭐⭐⭐⭐⭐ The product is the best *by B***D on August 26, 2026* Price seems to be in little inflated to make up for delivery. But excellent product. ### ⭐⭐⭐⭐⭐ North Spore Rocks! *by T***O on September 4, 2026* Great products and excellent customer service. Boomr Bag is like a shroom cheat code! ## Frequently Bought Together - ‘Boomr Bag’ (5 lb) Manure-Based Sterile Mushroom Bulk Substrate | Maximum Yield Formula | Made in USA | Grow Dung-Loving Mushrooms | North Spore - 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) - Myco Labs Premium 5-Grain Mushroom Spawn Bags | Sterilized Grain Spawn | Injection Ports | 2 Quarts Each Bag | 2 Bags per Box --- ## 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/148907055-sterile-manure-substrate](https://www.desertcart.kr/products/148907055-sterile-manure-substrate) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-09-21*