Mycology: The Masters Mix

One of my favorite things about being a dedicated mushroom grower is that I’m constantly learning new things. As soon as I think I have it all figured out, I’ll try something new that changes everything. 

In fact, the more I learn, the more I realize that there is so much more to learn!

A perfect example of this occurred just recently, when I picked the most gigantic flush of Blue Oysters I’ve ever seen off of a 5 lb fruiting block. (almost 2 lbs!) 

The thing is- this particular fruiting block wasn’t made with the standard fruiting block recipe of sawdust amended with bran. Instead, this unbelievable bounty was harvested from a 50:50 mix of hardwood sawdust and soy hulls- known by many as the “masters mix”.

As far as I know, the master behind this substrate recipe is T.R. Davis from Earth Angel Mushrooms. I first heard of it while browsing some of his videos on his YouTube, where he describes this beautifully uncomplicated substrate recipe while standing in front of some pretty impressive looking oyster blocks. 

I couldn’t wait to give it a try!

oyster-mushrooms-grown-on-soy-hulls-the-masters-mix

THE MASTERS MIX

The masters mix is pretty straight forward:

“Combine 1 part hardwood sawdust with 1 part soy hulls, hydrate to 60%, and sterilize at 15 PSI for 2.5 hours.” 

It is simply A 50/50 mix of soy bean hulls and hardwood sawdust hydrated to perfection!

To break it down even more, for every 5 lb fruiting block, you need:

  • 1 lb sawdust 
  • 1 lb soy bean hulls
  • about 3 lbs (1.4 liters) water

Many hobby growers like to use hardwood fuel pellets, and pelletized soy hulls instead of bulk. In that case, in order to get the perfect mix, you’ll need:

  • 2.5 cups Hardwood Fuel Pellets
  • 2.5 Cups Pelletized Soy Hulls
  • 1.4 Liters of water 

Just mix up the ingredients and sterilize! The hardwood pellets break apart really easy, but Soy Hulls need a little more encouragement-, so be sure to soak them overnight so they are easier to mix.

recipe-for-growing-on-soy-hulls

Why Grow Mushrooms On Soy Hulls? 

So what are soy hulls and why are they so effective?

Oyster mushrooms are known to grow on just about anything… coffee grounds, sawdust, banana leaves, cotton seed hulls, and many other agricultural waste products… they all make reasonable substrates.

But some substrates are bound to produce faster growth and higher yields, and I gotta say that for Oysters, I have never seen something so effective in producing huge yields as the Master’s Mix.

Read the full article at Freshcapmushrooms.com