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Pasteurized Manure Mushroom Substrates

From $20.00 From $15.00

(30 customer reviews)

$60/shipped on 4 Bag (56 Quart) orders. Select this option, NO COUPON REQUIRED!

For reference, 4 bags fills a 56 quart tub 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, 4-5lb bags* – accommodating needs for growers seeking to work with either wood loving mushrooms (lignophiles) or dung loving mushrooms (coprophiles) like agaricus blazei, agaricus bisporus or other cultivated species of dung loving mushrooms.

*The volume does not change for the bags, depending on the composition of the blend the weights range from 4-5lb. This new blend is much more expansive than my previous manure blend.

My manure blend is prepared specifically for commercial agaricus growers, but can be used with AMAZING results for any 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 (4 bags gives a nice fill for a 56 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.comย  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 the weight (up to 30lbs 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

1 Bag (Shoebox), 4 Bags (56 Quart Tub), 6 bags

30 reviews for Pasteurized Manure Mushroom Substrates

  1. Anthony B. (verified owner)

    Great stuff !

  2. Michael C. (verified owner)

    Arrived quickly with no contamination problems. I will be using your service again sir. ๐Ÿ‘

  3. Raymond P. (verified owner)

    The new manure mixture is out of this world, Definitely the strongest mycelium growth I’ve ever seen , very healthy and vigorous, I’m definitely looking forward to ordering more.

  4. Lesa H. (verified owner)

    I’ve ordered the manure substrate and have had GREAT results ! I haven’t had such great results with my DIY substrate mix, so I will ONLY use this substrate from here on out ! The agar plates are a great bargain, and I’ve had much success with those as well. You can tell MycTyson has a passion for mushroom growing, obvious to see from this wonderful and informative website to the careful packaging of his products. Count me in as hopelessly devoted and loyal customer ! A +++++++ !!

  5. Raymond P. (verified owner)

    By far the best formulated mixture in a pasteurized manure I’ve seen, mycelium growth is rapid & healthy. Moisture content seems to be spot.on, I couldn’t be more pleased, and I’m sure you will be too.

  6. Michael W. (verified owner)

    Very pleased with this product. Whatever the secret sauce is the mycellium loves it whole heartedly. I thought it was a little dry but the mycellium didnt seem to think so. Definitely will order again. Thanks MycTyson.

  7. 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 ๐Ÿ‘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!

  8. Scott D. (verified owner)

    This is a really excellent product that has, so far, performed at a much higher level than other substrate blends Iโ€™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 youโ€™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!

  9. 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 wonโ€™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!

  10. . (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.

  11. . (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.

  12. . (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.

  13. Oklahoma F. (verified owner)

    This substrate is awesome and canโ€™t wait to place another order! Great customer service and response times!

  14. Jesse N. (verified owner)

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

  15. . (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!!!

  16. 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.

  17. . (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 couldnโ€™t get enough of it! Thank you again, love from Texas โค๏ธ๐Ÿ„

  18. . (verified owner)

    S/o Myc Tyson For the beautiful Substrate canโ€™t wait to use it ! Also by far the best time on shipping

  19. . (verified owner)

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

  20. . (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.

  21. . (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 it๐Ÿ‘๐Ÿค˜

  22. . (verified owner)

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

  23. . (verified owner)

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

  24. . (verified owner)

    Best deal I’ve found online. Will continue to support!๐Ÿค™๐Ÿฝ

  25. . (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.

  26. . (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 (:

  27. . (verified owner)

    This guy is the real deal. Everything was as promised. Fast shipping, professional packing. I havenโ€™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 donโ€™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.

  28. Kevin B. (verified owner)

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

  29. . (verified owner)

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

  30. 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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