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Pasteurized Manure Mushroom Substrates

From $20.00 From $15.00

(24 customer reviews)

$60/shipped on 20lb orders. Select this option, NO COUPON REQUIRED!

For reference, 20lb roughly fills a 56 quart to 3-4″


Manure is bagged and cooking begins Saturday. Cooks are done throughout the weekend and into Monday.

If you order before Saturday morning at 9AM EST, your order will ship the next Monday.

For custom blends, local pickup or bulk orders (150lb+), please contact LetsGrow@MycTyson.com

Manure is 50:50 blend of composted (black gold) manure & hydrated vermiculite by weight (pictured) – amended with gypsum (chalk) for optimal mycelial growth. Pasteurized for 6 hours, guaranteed to arrive clean or your order will be replaced.

ONCE THE BAGS ARE OPENED, THE ABOVE GUARANTEE IS NULL AND VOID! I do everything I can to guarantee you’ll receive a clean product, what you do with it after opening is up to you!! I encourage you to compare my products against others, and look forward to your repeat patronage!

**I am happy to replace ANY order which incurs shipping related damage ASAP, at no added cost. Take photos & email me if there are any concerns!

SKU: 1287391244 Category:



I am able to offer both manure & sawdust mushroom growing substrates in sealed, 5lb bags – accommodating needs for growers seeking to work with either wood loving mushrooms (lignophiles) or dung loving mushrooms (corporphiles) like agaricus blazei, agaricus bisporus or other cultivated species of dung loving mushrooms.

This manure substrate is perfectly suited for ANY dung loving mushrooms!

Growing Agaricus Mushrooms At Home On Manure

Grow directly in the bag, you can remove the top and case them (leaving 1-2″ of plastic for a perfect micro climate) or dump into a tub (20lbs gives a nice fill for a 55 quart) or many smaller containers for spawning. Whichever route you take, this manure based mushroom substrate will absolutely satisfy your home mushroom growing needs!

If you have any questions, don’t be shy to email me at LetsGrow@MycTyson.comΒ  and remember, while this is well suited for growing all dung loving mushrooms, I cannot offer advice which is illegal in my state. Please do not ask about using my product for anything illegal!

Shipping is in flat rate boxes only. If you order alongside other items these will ship separately.

This keeps costs lower (free boxes & supplies) as 5lb (up to 20lbs can go in a large flat rate) is heavy & can be expensive to ship regardless of location, doubly so when you order more.


Additional information

Weight N/A
Dimensions N/A

5lb, 20lb, 30lb

24 reviews for Pasteurized Manure Mushroom Substrates

  1. Jake F. (verified owner)

    Was super excited to get this and learn about mycology! This guy goes above and beyond too! I will be a returning customer for sure, his blagar plates are awesome πŸ‘Œ [black agar carbon infused] and look professional. Can’t wait to get some lions mane going! Thanks myctyson! He also is thinking of the ecosystem and used cardboard and paper tape to mean that means alot. 5 stars!

  2. Scott D. (verified owner)

    This is a really excellent product that has, so far, performed at a much higher level than other substrate blends I’ve tried. The affordability is supreme and despite some shipping delays that were out of Mycs control, I would have no hesitation recommending this product to others. If you’re able, get at least 20lbs and store the extra in food saver bags in the freezer. Thaw the day before. Myc stayed that this mix might err on the drier side of field capacity, but I found that it was perfect on arrival. Now to get a bigger freezer!

  3. Brian M. (verified owner)

    Great looking quality product. Arrived as promised. On time. Not to mention. The customer service has been outstanding. Pricing is on point as well. Give it a try, you won’t be disappointed.

    • Myc T.

      I’m super stoked that you’re happy with the product and with the service you received! I really do try my best! If you ever need anything else email is the fastest way to reach me!

  4. Kyle W. (verified owner)

    Fast Shipping and everything came very professionally packaged. MycTyson responded to my emails very quickly regarding longer storage of the substrate. I will be ordering again soon.

  5. Alfredo R. (verified owner)

    howdy myc! just gotta say you’ve got some good sh$t haha. I had a problem where one of my bags tore during shipping and I was able to get a replacement one no problem. you the man! will be ordering more soon! thank you for your great service.

  6. Michael B. (verified owner)

    This substrate is awesome! Had a family emergency come up, and didn’t use the substrate for over 2 weeks. My mycelium still devoured it! Thanks Myc Tyson.

  7. John D. (verified owner)

    This substrate is awesome and can’t wait to place another order! Great customer service and response times!

  8. Jesse N. (verified owner)

    This substrate is fantastic – it smells amazing and your manure loving species will eat … the shit out of it. It’s fantastic stuff and I’m looking forward to trying others (like the sawdust) for ones like oysters!

  9. . (verified owner)

    Fantastic substrate, competitively priced, delivered on time and packaged with excellence. This is my new go to place for myco growing supplies. MycTyson delivers what he says he will!!!

  10. ophelia c. (verified owner)

    This this sh*t!! I love the smell, the product smells like heaven and is a paradise for my mycelium. AAAA+++ vendor. I adore Myctyson.

  11. . (verified owner)

    Love Love Love Myctyson, not only an all-around stellar dude. But honest and great product, I will not be buying any of my products again from anywhere else. My dung loving mushrooms love his subs and couldn’t get enough of it! Thank you again, love from Texas β€οΈπŸ„

  12. . (verified owner)

    S/o Myc Tyson For the beautiful Substrate can’t wait to use it ! Also by far the best time on shipping

  13. . (verified owner)

    My order came fast And they had very very good customer service with deathly order again!!!!

  14. . (verified owner)

    Excellent substrate. Comes quick and healthy. MycTyson is one of the most trusted people in the industry. I was recommended to him by a friend. Keep up the great work.

  15. . (verified owner)

    I’m ussualy not a high maintenance customer, but I feel like I can tell when people care about there work and the peeps who receive from itπŸ‘πŸ€˜

  16. . (verified owner)

    This is an excellent product β€” I used to grow with vermiculite, gypsum and coco choir. my grains took to this soil quickly and I’ve had growth that’s about twice as fast. It’s quality soil at a great price. I’ll probably be getting my soil here from now on tbh

  17. . (verified owner)

    Great customer service myc answered my questions I had almost immediately very personal experience will definitely order again

  18. . (verified owner)

    Best deal I’ve found online. Will continue to support!πŸ€™πŸ½

  19. Jason G. (verified owner)

    Ordered the new Manure Substrate. Very fresh and arrived quickly. The mycelium is colonizing very quickly in a matter of a couple of days. Will order again for sure. Great personal communication with the owner as well who addressed a concern I had.

  20. . (verified owner)

    Really happy with the product I received, came really fast and Myc seems like a cool dude. Currently watching the mycelium expand so I can attest to the viability of it. Awesome price, and really excited to see what my culture does with it. Thanks again (:

  21. . (verified owner)

    This guy is the real deal. Everything was as promised. Fast shipping, professional packing. I haven’t used it yet, but I do not doubt the quality of the product. The price was cheaper than all the big online vendors, and I guarantee none of them puts as much effort in as him. I usually don’t leave reviews, but I feel like he deserves it. I have spent thousands on substrate in the last few months before I stumbled upon Myctyson. I hope to give him all my business moving forward.

  22. Kevin B. (verified owner)

    Once again blown away with Mycs’ products. Perfect field capacity and mycelium is devouring it. Great price for an outstanding item. Cheers!

  23. . (verified owner)

    Always more than pleased with the order. Colonizing as we speak. Highly recommend

  24. Ryan T. (verified owner)

    Best substrate on the market! I’ve received manure and supplemented hardwood from Myc Tyson. I haven’t seen what the hardwood can do yet. But the manure is top notch. No major clumping that you have to break apart and risk contams with. And the time for the mycelium to devour it was quicker than any other substrate I’ve purchased before. I recommend coming here for all your mush needs! PS on the very slim chance that there is an error or delay in your order Myc Tyson makes up for it and has the best customer service!

    • .

      Thanks for the feedback Ryan! I’m happy that everything is performing to your expectations and even surpassing them! The hardwood is the same blend I use for other substrates that I make, you’re sure to love it! I now realize I should make an effort to remind growers that they will dry out if not used within a reasonable time after receipt! This is one reason I make them to order, you can store it in an air tight vessel to prevent this from happening!

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