Filter Patch Mushroom Grow Bags


Unicorn Brand autoclavable bags with filter patch for mushroom growing.  Available in all sizes.  Fill with substrate and sterilize.  Once cool inoculate with your mushroom culture and seal.  The filter allows air exchange, while keeping contaminants out.



Unicorn bags for mushroom growing are made of polypropylene so you can fill with substrate then sterilize in an autoclave or pressure canner.  Once cool inoculate with your mushroom culture in your sterile lab or “still air box” and seal.  Bags can be sealed with an impulse heat sealer, bag clamps, or zap strap.  The filter patch allows for air exchange while keeping contaminants out.

Sold by the box of 1,000 or in bundles of 10 or 100 bags. Note: X-Large bags are sold by the box of 500.

Mushroom Grow Bag Sizes and Filtration Options:

X-Large: Holds 10-14 lbs of substrate
XLSA -(0.5 micron) (10″ X 5″ X 24″) 3.0 Mil Polypropylene

Large: Holds 5-7lbs substrate
14A -(0.5 micron) (8″ X 5″ X 19″) 2.2 Mil Polypropylene

Med: Holds 2-4lbs substrate
10A (0.5 micron) 5″X4″X18″ 3.0mil Polypropylene
10T (0.2 micron) 5″X4″X18″ 3.0mil Polypropylene

4T (0.2 micron) 4″X3″X18″ 3.0mil Polypropylene

About the Filters:
T Filter – 0.2 micron provides highest filtration and least gas exchange. Best for grain spawn.
A Filter – 0.5 micron provides high filtration while allowing more gas exchange than T filters. Good for fruiting blocks.

Additional information

Weight N/A
Dimensions N/A
Size and Filter

Small 0.2 micron, Medium 0.2micron, Medium 0.5micron, Large 0.5micron, X-Large 0.5micron


10, 100, 500, 1000

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