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Ultimate ½ Pint Substrate Jars  (12-Pack) 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 (12-Pack) (Ujar02)

4.94 stars, based on 249 reviews
(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,...

My go to jars

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Perfect for easy grows.
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My go to when I'm lazyy.

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Great product. Out of the 12 o jars only one contam but hey it happens. Always happy with these jars. Using them for years!

My jars are FUZZY!

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Pros:
  • Great customer service
  • Sterile jars
  • Easy
  • Tracking
Cons:
  • Inevitably fragile
Upon arrival, I noticed that several of the jars came broken, but after a short email with picture proof they sent replacements. So far the first set of jars are all colonizing nicely, and I'm excited watch them get fuzzier. Fantastic customer service and quality!

I would be wary of ordering a large number of jars alongside other items, as this is what I think led to the jars breaking (more items means larger box where the items might more easily get jostled around).

My Second Substrate Jar Order

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  • price
  • quality
  • timely
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This is my second order...my first was in December 2018 and had absolutely phenomenal results. No complaints and hoping this batch goes as well or better!

New Glassware!! Nice.

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Pros:
  • Professional results
  • always sterile
  • perfect moisture content
Cons:
  • no recycling program
Hey guys, thought I'd finally review your jars. Been buying these for years and noticed you guys switched to a different brand of glassware! What I noticed was seemed like a thicker glass, I like that the sides are totally clear now, no swirly glass art like on the Ball brand jars. They seem a little taller than the old ones.. Are they bigger size? Noticed the "MGK" Logo in the glass on the bottom of each jar, pretty sweet! You guys must have had these custom made! Overall I was just curious why the change and want to say that they look good! Looking into the jar seems like HD compared to the others.. 2 thumbs up!! I also want to say, Ive tried making my own many times following youtube videos and even using the same ingredients you do and they never turn out as good. The difference is worth the price I pay for yours!