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North Spore’s Boomr Bag is a 5 lb sterile, manure-based bulk substrate engineered by expert mycologists to maximize yields of dung-loving mushrooms. Featuring a proprietary blend of composted horse manure and coco coir, it’s hydrated and ready for versatile growing setups. Trusted by over 1,100 growers since 2019, this USA-made substrate offers reliable, high-performance mushroom cultivation without refrigeration.
| ASIN | B07TTV73RM |
| Brand Name | North Spore |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,150) |
| Global Trade Identification Number | 00851555008931 |
| Item Weight | 2.27 kg |
| Manufacturer | North Spore |
| Style Name | Sterile substrate |
| UPC | 851555008931 |
| Unit Count | 2365.88 Milliliters |
| Volume | 4.75 Liters |
N**K
Good stuff all I use
T**E
I switched to boomr bags after being unsatisfied with other pre-pasteurized substrates and mixing and sterilizing my own. It's not cheap, but the end result is superior. Keep bag for at least a week before using to check for contam. North Spore will replace for free any contaminated bags if you contact them. I've never seen a contaminated bag even after over 20 orders, but I have had to get north spore to replace a grain bag which they did hassle-free. Just take a pic of the contaminated and the lot number sticker on bag and email them. For anyone saying this substrate doesn't work for manure lovers, I'd say you just don't know how to grow mushrooms. A lot of people contaminate batches themselves without realizing it. The bag may come too wet or dry. Too dry, just spray with distilled water during mixing with spawn in sterilized room. Too wet (you can tell if water separates from substrate and you can see liquid in bag) let it dry out by spraying breather patch with alcohol and unfolding bag a little and let sit a few days. Always spray breather port with alcohol before handling or moving it from box. Airborne bacteria can get pulled into bag from patch.
C**S
I got some chonky mushrooms with my Boomr Bag. If you're a newbie, just know that you have to germinate your spores in an agar plate, or BRF jar first.
A**R
Original order was for 2 dung lovers bags, waited a few weeks and saw that one was contaminated. Contacted North Spore directly with my Amazon order # and they immediately sent me a replacement. Great customer service response and communication. Ordered 3 more dung lovers bags due to my needs and currently waiting to see if they along with the replacement crop up with contamination. Great response from North Spore otherwise.
J**Y
Always had luck in the past, good and clean. This time it was awful
Trustpilot
3 weeks ago
2 weeks ago