Rye Grain Jar
Rye Grain Jar

Rye Grain Jar


Great for starting spawn for casing, bulk substrates or just as a master grain spawn. Made with precision and care.

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Rye Grain Jar

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The Mushbox rye grain jars are pre-sterlized and sealed with an injection port in the lid making it easy to peel back the foil and start the inoculation with a multi-spore syringe or edible culture syringe. Rye grain is one of the most common and popular substrates to use and is included in most of our mushroom kits.
Start spawning from almost any variety of mushroom with these jars. Made with strictly organic rye grain (berries) using precision process we have developed over the past 10 years.  Every substrate product is backed by the Mushbox Guarantee.
Once the rye grain has colonized with the mushroom species of your choosing you then spawn this mycelium to another substrate like shredded wheat straw, compost or manure mixture creating a robust substrate base from which you would case beautiful and pure organic mushrooms.
Rye grain is a reliable and easy to use substrate for growing mushrooms and works with almost any edible / exotic strain of mushroom.  It is important to do your research before committing to a particular substrate so please make sure you pick the right one for the particular species you want to grow.
Great product. Very communicative business in light of delays and such.
I have a friend that told me over and over to never ever order pre-sterilized substrate. he said that nearly always, the moisture in the jar all drains to the bottom and the top grains become dry and difficult to collonate. Well, this was my first order with these guys and could not afford a pressure cooker so i went with the pre-sterilized. and the moisture, much of it DOES go to the bottom of the jars. hers a solution, give them a quick shake to disperse the moisture and it should be fine. I knocked my first jar 2 weeks ago and noticed several white spots about 2 days ago and looks pretty healthy so far. this is my very first time and so far everything seems to be going pretty well (fingers crossed). but I have to give it to mushbox. as far as I can tell they proved my friend wrong. aside from a pretty big shipping delay (due to them having to prepare fresh substrate so at least it was for a really good reason, I get the freshest product) all my items in my order work perfectly and nothing was broken during shipping. jars were very tightly wrapped and very clean. jars were moist and the way they set up these jars for you with the self-healing knock-hole, and the filter over the lid, really does a great job keeping contaminants out so far as I can tell and It made inoculation very easy. Great job guys. For pre-sterilized, these jars did the job. I have proven their product works, from here on out I can pretty much only hold user error accountable for anything that goes wrong.
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Reviewed by: (Verified Buyer)  from USA. on 11/18/2014
Excellent buy :)
I highly recommend the pre-sterilized rye grain jars if you are an occasional grower of mushrooms. It is quick, convenient and they do an excellent job. I've ordered these a couple of times now and I've had 0 issues with contamination. As another reviewer mentioned, it is good to give them a light shake prior to inoculation to ensure moisture doesn't collect at the bottom. If you order more than 4 jars, you can expect an initial delay as they prepare the product. Finally, I'm also very pleased by how responsive and professional the staff is at mushbox. They always get back to me very quickly if I have a question. I'll be ordering these again! :)
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Reviewed by: (Verified Buyer)  from Toronto, ON. on 12/19/2014
Outstanding service and quality products!
Knock'd my jars 3 weeks ago..had a slow start as i am new and needed to get my environment correct. (1 via multi-spore syringe and the other via spore print) The two jars are Now showing about 70-80% colonization and growing at a viral rate with no sign of contams and all parameters are being met inside the jar(no i didn't open the jars and find out:). Another great product from Mushbox!
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Reviewed by: (Verified Buyer)  from US of A. on 2/10/2014
Great Customer Service
These guys went above and beyond to make sure that the rye grain/jars sent to me were contaminant-free. I've had success with this product each and every time.
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Reviewed by:  from Unknown. on 7/18/2012
Great product and website, planning on making a lot more purchases!!!!
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Reviewed by: (Verified Buyer)  from mi. on 10/28/2013
Awesome rye grain jars!!!
The rye grain jars I received took a bit to get shipped here but it was sooooo worth the wait!!!! This incubated very well and bulk grow here I come!!!! Definitely recommend!!!!!
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Reviewed by: (Verified Buyer)  from Pennsylvania . on 12/16/2017
Works for me every time
I love using rye for getting nice cakes, then case it to straw and within 30 days I am picking huge mushies. I have tried several other methods and this way works the fastest with little effort.
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Reviewed by:  from Your neighbors house. on 10/22/2010
grain is the way to grow
Using rye grain is one of the oldest methods for growing mushrooms. As long as it is sterilized correctly and injected with quality spores it will work every time.
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Reviewed by:  from AB. on 8/23/2010
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