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8-Pack ‘Boomr Bag’ Manure-Based Sterile Mushroom Substrate

Hot
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In stock
Sold Out

8-Pack ‘Boomr Bag’ Manure-Based Sterile Mushroom Substrate

55 Reviews
$224.00$200.00

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Species Dung-loving mushrooms
Moisture content Hydrated to field capacity
Carton size 8 bags (40 lbs)
Bag weight 5 lbs each

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. Over several years, the recipe 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 in a tray using a humidity-controlled grow room or Martha set up.

Features & benefits:

  • Made entirely from organic materials
  • Balanced pH with a complex nutrient profile
  • Proven vigorous mycelial growth
  • Fast colonization and higher yields
  • Increased aeration and moisture retention 
  • Hydrated to field capacity

Boomr Bag is made from a blend of quality local, organic, and non-GMO materials including a proprietary blend of composted horse manure, coco coir, and several quality substrate supplements (although we keep the exact blend a secret!) Unlike other substrates that contain harmful additives, you can rest assured that your grow will be natural and chemical free.

Spawn to bulk ratio:

We recommended mixing 1 colonized grain spawn bag with 2-3 Boomr Bags. (Higher inoculation rates may improve your success.) 

Customer Reviews
4.9 Based on 60 Reviews
5 ★
95% 
57
4 ★
3% 
2
3 ★
2% 
1
2 ★
0% 
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1 ★
0% 
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Filter Reviews:
SW
03/18/2025
Stephanie W.
United States

Boomr Bags for the win!

Best quality and much better yield than CVG! Fast shipment too! Northspore does it right!

03/21/2025

North Spore

Thanks for taking the time to leave a great review, Stephanie! We so appreciate it!

AK
03/08/2025
ALEXANDER K.
United States
I recommend this product

So many options

I value is unbelievable only down side is I don’t think I have the set yet to work thru them all in time! I’ll have to rotate properly

03/08/2025

North Spore

Thanks, Alexander! We couldn’t do it without customers like you.

CB
03/01/2025
Connie B.
United States

8 pack of manure substrate

The substrate was perfect just damp enough and not clumpy at all out of all the different companies I've gone through north spore has the best substrate by far I have five monotubs four of them are from North for one was homemade so I've used plenty of substrate every time I order I'm always impressed thanks again

03/02/2025

North Spore

Thanks for the great review, Connie! We're so glad everything is working out for you.

E
02/13/2025
Enjoi802
United States
I recommend this product

Boomr bag manure!!!

Thank you for a ready to use product, works great with the boomr bin automated grow!!

02/13/2025

North Spore

Thanks for the great review, John! We really appreciate your support.

JV
02/11/2025
Jason V.
United States

Great product! 🙂

Rich nutrient substrate!

02/13/2025

North Spore

Thanks for sharing, Jason! We appreciate you taking the time to share your experience! The team is here if you ever need anything.

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8-Pack ‘Boomr Bag’ Manure-Based Sterile Mushroom Substrate

8-Pack ‘Boomr Bag’ Manure-Based Sterile Mushroom Substrate

$224.00$200.00
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