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‘Boomr Bag’ Manure-Based Sterile Mushroom Bulk Substrate
Media | Horse manure mix |
Moisture content | Hydrated to field capacity |
Bag weight | 5 lbs |
Maximize your mushroom yield!
Our best-selling Boomr Bag is a sterile manure-based bulk mushroom substrate formulated by mycologists to increase the yield of your grow. 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. Note: Substrate is hydrated to field capacity.
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.)
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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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Top Notch
Boomrbags are awesome! Many healthy flushes! Quality product!
North Spore
Thanks so much, Malia! The team is here to help if you ever need anything.
Boomr bag substrate
I have had great success with the boomr bag and use nothing else now- I have had multiple 4 flush fruitings and am on the 6th with one. Substrate is very consistent
North Spore
Thanks for taking the time to leave your honest feedback, Matthew! We’re so glad everything is working out for you.
Unreal Customer service
Firstly, every time I have used healthy products from North Spore, the end result is always above and beyond satisfactory. The customer service that North Spore provides is absolutely phenomenal! Every time I have had a question or issue, it is expediently addressed and solved. Kudos to the organization.
North Spore
Thanks, Alex! We love to read reviews like this! It makes what we do all the more worth it.
Best around
Back again for another bag. After trying a few others on the market, this is the only mix that hasn’t created problems! I promise to never stray again after all the mess I just went through. I’m sticking with what works!
North Spore
We really appreciate the great review, Nicole! If you need help with anything, please reach out.
Great product and service
Shipped and arrived quickly. Colonized quickly as well. No uncertainty and exactly what I required.
North Spore
Thanks for sharing, Stacy! We're so glad everything is working out for you.
Time, and time again...
Dependable and consistent, works great!
North Spore
We couldn't do it without customers like you, Michael! Our team is here if you need anything.
Got to get
Loved it. If i had the money id buy several more grow kits manure and wood.
North Spore
We love to read reviews like this! Thanks for the great review, Zach! We really appreciate your support.
Great product
I received great advice in a prompt and timely fashion. I had a broken bag and it was replaced right away. I would highly recommend this product.
North Spore
Thanks for sharing, Robert! We appreciate you taking the time to share your experience. If you ever need help with anything, please reach out.
Favorite substrate
Perfect moisture, had no issues, got a good 5 flushes out of it. 10/10
North Spore
Thanks for sharing, Ryan! We appreciate you taking the time to share your experience. Please reach out if you ever need anything.
Couldn’t ask for more
Favorite substrate out there, perfect moisture, quality is 10/10.