Ultimate ½ Pint Substrate Jars (6-Pack)
Ultimate ½ Pint Substrate Jars (6-Pack) is backordered and will ship as soon as it is back in stock.
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Ultimate ½ Pint Substrate Jars (6-Pack)
Description
Description
Ultimate ½ Pint Substrate Jars (6-Pack)
The Original PF-Tek Method—Perfected Over 15 Years
Still the fastest and easiest way to grow mushrooms, our Ultimate ½ Pint Substrate Jars are built on the time-tested PF-Tek method using premium brown rice flour. With over a decade of refinement and thousands of satisfied growers, these jars remain a top choice for beginners and seasoned cultivators alike.
What’s Inside Each Jar:
- Natural Organic Brown Rice Flour
- Vermiculite
- Mineral Water
- Liquid Worm Castings
- Bee Pollen Boost for enhanced growth
- Sterilized for 120 Minutes in a commercial autoclave—ready to use out of the box
Each 8oz jar is topped with a dry vermiculite barrier and sealed with a lid pre-drilled with four inoculation holes. Your jars are handmade fresh the day your kit ships, then securely foil-wrapped and bubble-packed for safe delivery.
Why Our Jars Stand Out:
- Fastest Colonization Speeds – Achieve visible results faster than standard BRF jars.
- Superior Ingredients – Our proprietary blend produces larger mushrooms and healthier mycelium.
- Time-Tested Quality – Trusted by repeat customers for over a decade.
- Perfectly Prepped – Just add your favorite spores or liquid culture and incubate.
Includes:
- 6x Fully sterilized ½ pint substrate jars
- Aluminum foil wrapped and bubble protected for shipping security
- Fresh-made jars with premium-grade ingredients and unmatched consistency
Ideal For:
- Beginners learning with PF-Tek
- Researchers seeking high-quality sterile substrate
- Anyone looking to simplify their first grow without sacrificing results
Let customers speak for us
Me…I’m the dummy. I struggled with maintaining humidity in my diy monotubs. The holes were never the right size or in the right place. Not with these. Perfect humidity. And I love the clamps. It’s like a child proof lock for me, warning me not to open until ready! Very well made. I wish I had found these sooner.
I just used your sterile injection pack with great success !😎😊thanks again will recommend Midwest grow in the future😎🔥💯
Easy to set up. Works as intended. Cleaner air and feel safer knowing it disinfected the surrounding surface area.
Got it quick...and about a week later they were pinning. The week after that I was eating them.
Never have a problem with thus substrate and ive purchased MANY bags of it always good moisture levels alaways contam free always quality
My order of the substrate arrived on time and was put work right off.(I had a spawn bag already i occulated and ready.
Just colonizing now.
All went well and may use again
I am so happy with this mushroom kit. it has been everything i wanted. Thank you. This is a must buy
I used three different strains and they are all doing great, at the end of the first day its possible to see development if your got strong enough genes, very healthy after transfer aswell!!!
Easy to set up and everything seems to be populating nicely. Very excited
The bag is doing great,spawn looked a little on the low emd as in ammounts but were 2 weeks in after initial injection and its already got healthy development, highly recommend for beginners who wanna try there hand at it
A set of bags w/ 5ml of spore juice in each will do the trick. Give the bad a good massage and another one at about 1 week. 10ml per bag will grow even faster but it is not necessary. Mycelium loves this grain combo.
High Quality products with an
ever helpful, extremely reliable and helpful team, we could not be more pleased. We recommend Midwest Organics to any one serious about growing the right way.
Keep my area nicely lit and warm
Worked within a week and got a decent amount
