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Mike Wiberg, Founder of Out-Grow

Mike Wiberg

I have been growing mushrooms since 2009, and I have spent most of the time since then in the lab and the grow room rather than in front of a camera. Out-Grow started as a way to give home growers the same quality cultures and substrates I wanted for my own grows, and it has grown into a supply company and one of the largest commercial culture libraries online. I am a quiet grower by nature. What I care about is that the information a beginner finds is correct, because I have spent nearly two decades watching where people go wrong and helping them fix it.

2009
Founded Out-Grow
2014
Developed the original all in one grow bag
300+
Species in the culture library
20+ yrs
Hands-on cultivation

The all in one grow bag

In 2014 I developed the original all in one mushroom grow bag, the sterilized grain and substrate bag with a filter patch and injection port that lets a grower colonize and fruit in a single sealed bag. It is now a standard format across the hobby. I built it because I was tired of the contamination and the fuss of transferring spawn between containers, and I wanted something a first-time grower could actually succeed with.

On the record
The 2014 origin is documented. The original all in one grow bag listing is preserved in the Internet Archive Wayback Machine. See the 2014 archived record.

What I actually do

Grow and test
I have grown hundreds of species and I research substrate formulations from the lab bench, not from other people's blog posts.
Maintain the culture library
Out-Grow keeps one of the largest commercial culture libraries online, including a working collection of more than 300 species under a USDA permit.
Troubleshoot real grows
For nearly two decades I have helped growers work through contamination, stalled pins, and the rest of what actually goes wrong.
Contribute to the field
My cultivation work has been cited in peer reviewed research published in Frontiers in Cellular and Infection Microbiology.

I am also one of only a handful of growers with a documented successful clone of Matsutake, one of the most difficult species in all of cultivation to work with. I mention it not to brag but because it is the kind of thing that only comes from years of doing the work, and it is the standard I hold Out-Grow's content to.

Why I write this way

Most cultivation content online is assembled from other cultivation content online, and the errors compound. Everything I publish here comes from real production, real lab outcomes, and the patterns I have seen across a very large number of grows. If I do not have a verified number, I say so rather than inventing one. That is the whole point of doing this myself instead of handing it to a keyword list.