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Ultimate ½ Pint Substrate Jars (12-Pack)

Availability: In Stock
Usually ships In 1 Day
Item #: Ujar02
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4.94 stars, based on 212 212 review(s). | Write a review
Retail: $45.00
$5.01
Price: $39.99
You Save: $5.01 (11.1%)

    • Natural Organic Brown Rice Flour
    • Vermiculite
    • Mineral Water
    • Liquid worm castings
    • Bee Pollen

    Customers Also Bought (check to add to cart)

    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 212 Reviews:
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    Midwest you rock!

    Rating:
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    Pros:
    • Great customer service!
    Cons:
    • None
    All I have is great things to say about Midwest! The customer service is exceptional! Rae is awesome and always returns emails in a timely fashion! Keep doing what yall are doing!!!

    Surprising Shelf Life

    Rating:
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    Pros:
    • Long shelf life
    • All jars colonized
    • Great customer service
    • Sterile
    • Clear instructions
    Cons:
    • A few foil tears but no contamination
    Inoculated 15 of these jars 9.5 months after ordering - way beyond the recommended time. All of them successfully colonized! The jars were stored at room temperature and I used less than 10mL of spore solution (also 9.5 months old). This is my first grow and I'm very pleased with my mega kit, instructions and great customer service. Highly recommend.

    Awesome Quality

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    I’ve used these particular jars with 50+ grows and have had a 99% effective rate. Never have had an issue that wasn’t my fault. I highly recommend these for anyone getting into growing their own fruits/mushrooms.

    Rating:
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    🔥🔥 products on my mama

    My go to jars

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    Pros:
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    Perfect for easy grows.
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