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Ultimate ½ Pint Substrate Jars (6-Pack) mushroom grow jars, PF TEK, BRF JARS, BRF, Grow mushrooms, mushroom substrate jars, ultimate pint substrate jars, mushroom growing supplies, BRF jars, sterile substrate jars, mushroom cultivation kit, mushroom grow kit, Midwest Grow Kits, mushroom growing tools, mushroom inoculation jars

Ultimate ½ Pint Substrate Jars (6-Pack) (ujar01)

4.91 stars, based on 227 reviews
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...

Used these since day 1, seven years and never failed

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First and only one i use. Simply cant get better results with anything else.

Very consistent product!

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Ive been buying these for years, maybe 20 + orders from you guys and they have always been top notch!! No contam issues ever! Thanks guys!

Lawrence KS

Wonderful substrate!

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  • High quality
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  • No Cons
The jars are perfectly filled and very easy to inoculate. This was my first attempt to grow mushrooms and it was very satisfactory. Mycelium is already growing.

I can't wait.

Work as advertised

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No complaint here. This company is simply the best at what they do.

Work perfectly

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First time growing. After inoculation about five weeks later all but one of my 18 jars were 100% colonized (the one that didn't I think got contaminated during the inoculation process). 8f I grow again I will definitely use midwest jars. Would recommend highly.