MycoPunks Sterile Grain FAQ

How much do I inject into the grain bag?

For 1kg it's 2ml of tested spore solution or liquid culture and 3-4ml for 1.5kg grain bags.

Here's our video on how to inoculate grain!

What is the difference between the types of grain?

Organic Rye Grain for mushroom grain spawn

MycoPunks Rye is certified organic which, when coupled with our organic substrate mixes gives you a fully organic mushroom grow! Rye berries are the OG grain choice for mushroom growers because they are nutritionally balanced and hold water really well. During colder months when temp fluctuations can cause condensation in your bag, rye happily keeps that moisture held in place so you don't end up with wet spots in the bag.

Pros : Organic, good moisture control, balanced nutrient profile. Reliable results. 

Cons : Not the quickest colonising grain in show.

Millet for mushroom grain spawn 

Millet is small and dense, nutritious with lots of minerals to encourage healthy mycelium growth. The small grain size is slightly slower going compared to rye but the surface area for mycelium when mixing with your substrate more than makes up for the spawn production delay. During warmer months when temp isn't an issue this is a an unrivalled grain choice. 

Pros : Super quick to colonise substrate, quick spawn production if the conditions are controlled well. Fosters healthy mycelium.

Cons : Can produce condensation a bit in temp fluctuations and more prone to bacterial contamination than rye.

Triple Mix

Nutritionally balanced with 3 different grains for the best of all worlds. The oats in this are perfect for moderating moisture levels in the bag to keep anaerobic bacteria issues at bay. The millet gives more surface area for quick mycelium jump-off into fruiting substrate.

Pros: Super healthy mycelium promotion, this is a good beginner bag with higher tolerance for screw ups.

Cons : A little on the slower side due to nutritional density... 

Milo / Red Dari

Milo has a similar nutrient profile to millet, being from the same grain family. The slightly larger grain size make up for the slower colonisation of millet but it is a dense grain and isn't very forgiving of condensation during colder months. The contrast of mycelium on a dark purple red grain is rad to see.

Pros: Larger grain gives quicker grain colonisation time than millet.

Cons : Can produce condensation a bit in temp fluctuations and more prone to bacterial contamination than millet or other grains. 

Popcorn

The largest of the grains we do, also the best smelling. Popcorn is super popular grain with the shroomery crowd. Super quick grain colonsiation and highly dense with simple sugars gets you going very quickly. However the larger grains are slower to colonise fruiting substrate.

Pros : Super quick grain spawn production which is the most important factor for growing mushrooms.

Cons: Slow to colonise bulk substrate.

I'm not ready to use my grain, how should I store it?

Store it in a cool dry place like a kitchen cupboard.

Don't store it in the fridge as this could cause contamination due to condensation forming on the filter patch and bridging through into the bag.

What are the bags the grain arrives in?

Our sterile grain arrives in an official Unicorn spawn bag. 

They are the T type filter which is specifically designed to keep CO2 levels high to discourage mushrooms from growing prematurely on your grain.

Our 1kg bags use the 4T injection port bags and the 1.5kg bags are in 10T injection port bags.

You can buy those here.