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Sterilized Rye Berries - Grain Spawn

Starting at: $4.95

Sterilized and prepared mushroom grain spawn substrate in a gusseted autoclave bag with filter patch and self-healing injection port. Shroom Supply grain spawn is composed of 100% USDA certified organic rye berries which is widely regarded as the highest quality grain for spawn production and is the industry standard for mushroom cultivation. The substrate is free of any additives or chemicals and is recommended for use with our pre-pasteurized mushroom compost.

Once colonized with mushroom mycelium, we recommend using the colonized grain spawn to inoculate a bulk substrate, like our premium pre-pasteurized mushroom compost. We recommend spawning two pounds of our grain spawn to five pounds of our compost. Alternatively, the colonized grain spawn can be transferred to more sterilized grains to promote further propagation of the mushroom mycelium (also known as a grain to grain transfer).

We prepare our organic rye berry grain spawn by thoroughly rinsing the grains, then soaking them for 18 hours in a gypsum-fortified water bath to ensure optimal moisture and mineral levels. Immediately after the soak, the rye is simmered for 10 minutes in distilled water. The rye berries are then sterilized at 15 PSI in a lab-grade autoclave for a complete 120 minutes.

Our grain spawn comes heat-sealed in sterile, filter-patch mycobags with injection ports and can be stored at room temperature for up to 14 days before use.

All grain spawn comes packaged in 1 lb. increments.

Made to order, usually ships within 2 business days.

Instructions: How to inoculate sterilized grain bags

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Customer Reviews:

Displaying 1 to 6 (of 19 reviews)

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Wow super fast service and very friendly the bags are packaged nicely and very well made I don't forsee any issues and I will definitely be ordering again!

Rating: 5 of 5 Stars [5 of 5 Stars]

by Frank Hernandez
I had previously tried similar sized / featured rye spawn bags from 4 other vendors -- no need to mention their names because if you are reading this, you have found the diamond in the ruff! These bags not only arrived the fastest, but they also have THE BEST QUALITY and craftsmanship put into them. Between the fast shipping, quality and well-assembled bags, speedy colonization rates... this is the only place I will ever buy my spawn from. If skeptical, YOU WILL NOT BE DISAPPOINTED. I only rate 5 stars because I cannot rate more! lol. The best bags out BY FAR! Look no further.

Rating: 5 of 5 Stars [5 of 5 Stars]

by Jeff Keith
Not only a great product but these people have hyper speed shipping ! Don't waste time and money with other companies, The Shroom Supply is the best !

Rating: 5 of 5 Stars [5 of 5 Stars]

by Justin
You will not regret it! Just be sure to loosen up the bag (read directions on the page) working on my next order now :D

Rating: 5 of 5 Stars [5 of 5 Stars]

by mr. Anderson , newbie
wow, I mean wow, fastest shipping iv ever had . ordered on Thursday and at my door on Saturday. iv got to say also I am about 4 states away to. haven't started research as yours came before the spores so we will see. also thanks for the free syringe, clean and dry , I am sure ill find a use for it. thanks guys and if all goes well ill be ordering again soon . so far, very happy.

Rating: 5 of 5 Stars [5 of 5 Stars]

by the dude
What else can be said.These guys know what they are doing and from what I can see first hand is the best product at the best price.Along with fast delivery, put all that together and you've got this place.

Rating: 5 of 5 Stars [5 of 5 Stars]

Displaying 1 to 6 (of 19 reviews)

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