how long can the substrate last in the bag?

Not long mine was green when it arrived.

Do I just need this kit and a spore syringe to grow or would I need something different or additional?

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.

How long will this product last before use when stored properly? And what would be recommended storage if possible?

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.

Where do I acquire a rye, vermiculite, pearlite substrate? Thanks

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

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North Spore 'Boomr Bag' Sterile Mushroom Bulk Substrate, Manure-Based, 5 lb

Product ID: 148907055

Details

Brand
North Spore
Global Trade Identification Number
Item Weight
5 pounds
Style
Sterile
UPC
851555008931

🌱5 lb sterile manure-based substrate

📈Optimized spawn-to-bulk ratio 1:2-3

🧪Mycologist-formulated premium blend

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Description

🍄 Grow Like a Pro, Harvest Like a Boss!

VERSATILE GROWING OPTIONS - Perfect for monotubs, filter bags, outdoor beds, or humidity-controlled setups.
MAXIMIZE YOUR MUSHROOM HARVEST - Scientifically crafted manure blend boosts yield for serious growers.
OPTIMIZED SPAWN RATIO FOR SUCCESS - Recommended 1:2-3 spawn to substrate ratio ensures robust colonization and growth.
TRUSTED BY THE MYCOLOGY COMMUNITY - Years of refinement make Boomr Bag the go-to substrate for dung-loving species.
READY TO USE STERILE BULK SUBSTRATE - Hydrated to field capacity, eliminating prep time and contamination risks.

North Spore's Boomr Bag is a 5 lb sterile, manure-based bulk mushroom substrate expertly formulated by mycologists. Featuring a proprietary blend of composted horse manure, coco coir, and supplements, it’s designed to maximize yields for dung-loving mushroom species. Hydrated to field capacity and trusted by growers worldwide, it supports versatile growing methods including monotubs and outdoor beds, with an optimized spawn-to-substrate ratio for reliable, high-quality mushroom cultivation.

Specifications

ASIN	B07TTV73RM
Best Sellers Rank	#24,690 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #269 in Garden Soil
Brand Name	North Spore
Customer Reviews	4.3 4.3 out of 5 stars (1,241)
Global Trade Identification Number	00851555008931
Item Weight	5 pounds
Manufacturer	North Spore
Number of Packs	1
Style Name	Sterile substrate
UPC	851555008931
Unit Count	80 Ounce
Volume	4.75 liters

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11388 kr

Duties & taxes included

In stock

Sold byAmazon IcelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Iceland.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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