Item #: ujar01
Availability: In Stock
Usually ships In 1-2 Days

6 Ultimate 1/2 Pint Substrate Jars Include:

  • Natural Organic Brown Rice Flour
  • Vermiculite
  • Mineral Water
  • Liquid worm castings
  • Bee Pollen
  • Fully Sterilized - Ready to go!

Price: $25.00

    Quantity:

    (ON SALE) Our 8oz Ultimate substrate jars are the quite possibly the best on the net! We have worked for over 15 years looking for perfection! We finally found it! We have combined special organic brown rice flour with vermiculite, mineral water, Liquid worm castings and Bee pollen to create the Ultimate mushroom growing jars! Each jar has four pre-drilled holes in the lid and a top dry layer of vermiculite for added protection. We have customers who have been using our jars for over 10 years simply because no other jars will out-perform ours! With the Fastest possible colonization times, the largest possible mushrooms no other jars will perform like these! We use Ball 100% Glass Canning jars! No plastic substitutes like others sell!

    We hand make every jar the morning your kit ships so your jars are the freshest possible! They are pressure sterilized in our Autoclave for 120 minutes.

    **Click here to read our update page about national canning jar shortages and pricing**

    Overall Customer Rating of 179 Reviews:
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    Happy Customer

    Rating:
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    Pros:
    Cons:
    6 pack substrate jars arrived in one piece and in a timely manner. Packaging was great! Will say my order before this could have arrived in better shape. 2 of the substrate jars that came with the ultimate kit i ordered where broken however i never informed midwezt of this as im sure they would have made it right. All in all ive been pleased with the business we"ve done up to this point and will continue to go to them for all my hobbys needs. Also i have used the online chat midwest provides and couldnt be happier with that service aswell.

    Great service

    Rating:
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    Pros:
    Cons:
    Great price and shipped in timely matter!

    USA

    Great times!

    Rating:
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    Pros:
    • quality
    • delivery speed
    Cons:
    • I'm a bad grower!
    Injected the spores in to this lovely cake. 8 weeks later, had a delightful adventure viewing the mushrooms closely.

    Minnesota

    Nice and....

    Rating:
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    Pros:
    Cons:
    Arrived w/1 jar broken. MGK quickly sent me voucher for replacement. As usual, no issues with growing my mushrooms. Good service! Good price!

    NM

    Professionally Made!

    Rating:
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    Pros:
    • Easy
    • Helpful
    • Professional
    • High quality
    • Well made
    • Affordable
    Cons:
    • None
    Professionally done, no problems experienced. Even better, when I was concerned at the slow pace of inoculation (nothing seen after ten days or so) I called to make sure I hadn’t waited to long to inoculate the jars, and was put at ease by the gentleman who answered the help line that I was within a 4-6 week window, and sure enough before another week passed, healthy, uncontaminated mycelium appeared and soon produced healthy fruit bodies. Very satisfied, money well spent!

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