8-Pack ‘Boomr Bag’ Manure-Based Sterile Mushroom Substrate
Media | Horse manure mix |
Moisture content | Hydrated to field capacity |
Carton size | 8 bags (40 lbs) |
Bag weight | 5 lbs each |
A $224 value!
Our best-selling Boomr Bag is a sterile bulk mushroom substrate formulated by mycologists to maximize your mushroom yield. It features a proprietary blend of composted horse manure, coco coir, and several quality substrate supplements (although we keep the exact blend a secret!) Over several years, it has been perfected for dung-loving mushroom species and is widely-trusted by mushroom growers.
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.)
Looking for single bags? Click here.
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- We recommend clean hands, latex or nitrile gloves, and sterile technique when using Boomr Bag to reduce the introduction of contaminants.
- Be sure to mix colonized grain spawn thoroughly into your substrate.
- It is best practice to wait a minimum of 1 week after arrival before using sterile substrates to ensure they were not compromised during transit. Rest assured that your purchase is 100% guaranteed. If your substrate was compromised, we will replace it.
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Boomr 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.
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Our Boomr Bags are sterilized in a commercial-grade autoclave. Sterility is verified using biological indicators and temperature sensors.
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North Spore promotes the use of its products for lawful purposes only. North Spore does not encourage the procurement, use or growing of any illegal substance. North Spore does not condone, encourage, facilitate, solicit, or promote any illegal activity. Certain substances are illegal under state and federal laws, and it is the consumer’s responsibility to be informed about the legal status of any substance the consumer grows, procures, or uses.
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- Reviews
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Smells great
This stuff is amazing, yields are great and the mushrooms are thick and healthy. It also doesn't smell like a bag of horse, which is really nice. ******* up a few tubs, recommend a still air box, it's worth the hassle
North Spore
Hello Hunter, Thank you for taking the time to leave a review! Glad you're dialing in your grow - don't hesitate to reach out if there's anything we can do to assist you.
Great substrate.
Received it quickly and my shrooms love it. Love it.
North Spore
Hello Tim! We're so glad you're enjoying the Boomr Bags. We wish you luck with your grow and will be here for assistance if anything comes up!
Always worth it
Great experience all the time. You definitely need the 8 pack compared to the individual
North Spore
Thanks so much, Timothy! The team is here if you ever need anything.
Perfect!
All 8 bags were sealed perfectly and the moisture content of the substrate was perfect! I definitely recommend this product!
North Spore
Thanks so much, Barrett. We love to read reviews like this! It makes what we do all the more worth it.
Bulk manure
Excellent. No signs of contamination prior and post of use. I use as an additive to my pasteurized coco coir bulk substrate and there is a clear difference in the quality and abundance of my grows/runs/flushes. Highly recommended
North Spore
We really appreciate the kind review, Jacob! Thank you for the support!
Discreet tight packaging
Bags were packed tight and initially looked smaller than I expected. Took a couple weeks to ship out but at least they were made fresh.
North Spore
Thanks for the support, Donovan! The team is here to help if you ever need anything.
Amazing
Works just like it should without all the mess of doing it yourself!
North Spore
Thanks so much, Jimmy! We really appreciate the kind review.
Great Service
Fantastic product and if any issues arise with shipping the customer service resolved promptly! Great product and service!
North Spore
We really appreciate the kind review, Mark! Our team is here to help if you ever need anything.
Great!
Haven't used them yet but still nice and contamination free!
North Spore
Thanks for sharing, Matthew! If you need help with anything, please reach out.
Great deal
Always love a good value
North Spore
Thanks, Tim! We really appreciate your support.