---
product_id: 78253562
title: "Pasteurized 50/50 Straw and Horse Manure Mix Mushroom Substrate for Gourmet Mushrooms (25 lbs)"
brand: "out-grow"
price: "¥68795"
currency: JPY
in_stock: true
category: "Out Grow"
url: https://www.desertcart.jp/products/78253562-pasteurized-50-50-straw-and-horse-manure-mix-mushroom-substrate
store_origin: JP
region: Japan
---

# 50/50 Straw & Horse Manure Blend 25 lbs Bulk, 5 x 5lb Grow Bags Fully Pasteurized & Ready-to-Use Pasteurized 50/50 Straw and Horse Manure Mix Mushroom Substrate for Gourmet Mushrooms (25 lbs)

**Brand:** out-grow
**Price:** ¥68795
**Availability:** ✅ In Stock

## Summary

> 🍄 Grow Gourmet Greatness—No FOMO, Just Fungi!

## Quick Answers

- **What is this?** Pasteurized 50/50 Straw and Horse Manure Mix Mushroom Substrate for Gourmet Mushrooms (25 lbs) by out-grow
- **How much does it cost?** ¥68795 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/78253562-pasteurized-50-50-straw-and-horse-manure-mix-mushroom-substrate)

## Best For

- out-grow enthusiasts

## Why This Product

- Trusted out-grow brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Maximize Your Harvest:** High-yield formula engineered for larger, denser gourmet mushroom crops.
- • **Bulk Buy, Bulk Benefits:** Generous 25 lbs supply in convenient grow bags to scale your indoor farm effortlessly.
- • **Plug & Play Cultivation:** Comes fully pasteurized with 5-micron filter bags—just add spawn and seal.
- • **Versatile Gourmet Growth:** Perfectly balanced for dung- and straw-loving mushroom species year-round.
- • **Sustainable & Chemical-Free:** 100% natural ingredients for eco-conscious growers who demand purity.

## Overview

Out-Grow’s Pasteurized 50/50 Straw and Horse Manure Mix is a premium, ready-to-use mushroom substrate designed for professional and hobbyist cultivators alike. Featuring a sustainable blend of natural ingredients and fully pasteurized in breathable 5-micron filter bags, this 25 lbs bulk pack supports high-yield, year-round growth of gourmet mushrooms with minimal effort.

## Description

desertcart.com : Out-Grow Pasteurized 50/50 Straw and Horse Manure Mix Mushroom Substrate for Gourmet Mushrooms (25 lbs) : Patio, Lawn & Garden

## Features

- High-Yield Formula: Combines horse manure and straw for superior mushroom growth and larger harvests
- Fully Pasteurized: Ready-to-use substrate with 5-micron filter bags for optimal air exchange
- Generous Quantity: Includes 5 x 5lb bags of premium substrate for bulk cultivation
- 100% All Natural: Made with sustainable, chemical-free ingredients for healthier mushrooms
- Versatile Applications: Suitable for dung- and straw-loving gourmet fungi species
- Convenient Grow Bags: Each bag features a 5-micron filter patch and ample room for fruiting directly in the bag
- Easy to Use: Simply mix your gourmet mushroom spawn directly into the grow bag, reseal it, and allow mycelium to colonize

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BPSR989 |
| Best Sellers Rank | #831,647 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #8,842 in Garden Fertilizers |
| Brand Name | Out-Grow |
| Color | Natural |
| Customer Reviews | 4.4 4.4 out of 5 stars (15) |
| Expected Blooming Period | Year Round |
| Indoor Outdoor Usage | Indoor |
| Manufacturer | Out-Grow |
| Material Features | Gypsum, Horse Manure, Spring Water, Vermiculite, Wheat Straw |
| Moisture Needs | Little To No Watering |
| Number of Items | 5 |
| Number of Pieces | 5 |
| Other Special Features of the Product | 25lbs Bulk Substrate, Easy to use, just add mushroom spawn, Fully Pasteurized, Great for dung loving mushrooms, Made by professionals |
| Plant or Animal Product Type | wheat straw |
| Product Care Instructions | Store in cool dry location until you are ready to use the product. |
| Sunlight Exposure | Full Shade |
| UPC | 628586695313 |
| Unit Count | 400 Ounce |

## Product Details

- **Brand:** Out-Grow
- **Color:** Natural
- **Expected Blooming Period:** Year Round
- **Indoor/Outdoor Usage:** Indoor
- **Material Feature:** Gypsum, Horse Manure, Spring Water, Vermiculite, Wheat Straw
- **Moisture Needs:** Little To No Watering
- **Product Care Instructions:** Store in cool dry location until you are ready to use the product.
- **Sunlight Exposure:** Full Shade
- **Unit Count:** 400 Ounce

## Images

![Pasteurized 50/50 Straw and Horse Manure Mix Mushroom Substrate for Gourmet Mushrooms (25 lbs) - Image 1](https://m.media-amazon.com/images/I/81JuLJBlduL.jpg)

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**Shop now:** [https://www.desertcart.jp/products/78253562-pasteurized-50-50-straw-and-horse-manure-mix-mushroom-substrate](https://www.desertcart.jp/products/78253562-pasteurized-50-50-straw-and-horse-manure-mix-mushroom-substrate)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-09-20*