Horse Manure Mushroom Bulk Substrate – Sterilized Manure Substrate

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Horse Manure Mushroom Bulk Substrate – Sterilized Manure Substrate

Get A Great Harvest Of Manure Loving Mushrooms, Fast!

Sterilized Horse Manure Bulk mushroom substrate will amplify any grow method.

Power up your Mushrooms.

Horse Manure Substrate adds bulk weight to any method.

Just mix your colonized spawn right into the bag to see insane growth and explosive fruiting! You can also use this Manure Substrate to fill your trays, bulk tubs, monotub setups and more.

Naturally sun dehydrated horse manure is screened, blended with gypsum, vermiculite, hydrated coco coir, and a pinch of our special blend of booster nutrients, formulated to hurry initial colonization time and increase the final harvest size of your crop. Our Manure Blend averages 5 flushes before a noticeable drop in production. After the final harvest simply add your spent substrate into a prepared outdoor bed for a natural crop a few times a year with minimal maintenance.


Ancient Path Naturals Horse Manure Mushroom Substrate will turbocharge your mushroom growth and provide you with amazing mushrooms in no time!

Ideal for Any Experience Level: Unlike many similar mushroom growing supplies that require a major setup, our mushroom substrate is perfectly hydrated and ready to use. Better Substrate means bigger mushrooms. Simply add colonized spawn and see growth.

Premium Mushroom Substrate: Amazingly productive substrate rich in minerals, micro-nutrients and ideal for all gourmet manure loving mushroom species. You'll never see what your mushrooms are capable of producing until they grow in our super powered substrates.

Home mushroom cultivation has become easier than ever! Mix with any mushroom grain spawn or colonized substrate for the largest mushroom crop you have ever grown! Sterile and ready to use. Sterilized bags can also be stored for 6 months with no worries.


Fastest Prep and Shipping - 100% Money-Back Guarantee – Have a great grow! We’re here to help you.

2 x 5LB Sterilized Horse Manure Based Mushroom Substrate - 10 pounds