If you are doing a lot of mushroom growing consistently or a large grow, it’s a good idea to start making your own substrate and grain spawn. I don’t know if you are doing the work of making your own substrate or buying your sub ready to go. To ensure that you will have success, I would mix 1:1 grain to bulk substrate, (preferably coco coir 65% with vermiculite 30% and a 5% mixture of some coffee grinds and gypsum powder (this 5% is not necessary but I found that it speeds up the process quite a bit.) Ensure that your coco/vermiculite and gypsum (CVG) mix is pasteurized and not sterilized, unless it is in a bag. Now the grain spawn is ready to be mixed with bulk substrate.
#MUSHROOM SPORE SYRINGE BLACK CLUMPS FULL#
Wait two more days to ensure a full colonization. The whole bag should be completely white, and another sign is the mycelial mass will shrink slightly. It should take 3 days to reestablish the mycelial growth. Wait until the bag is about 30% colonized (that white blotch gets to be about the size of 4 or 5 half dollars, then shake and break up the contents of the bag until well, evenly mixed. So relating to the environment that we are simulating in a monotub, the cool air fae, tiny droplets of water on the surface, ambient day light, healthy, warm mycelium cake these factors are the best way to ensure timely arrival of a very well earned harvest of precious fruits of labor.
In nature, mushrooms generally fruit at the crucial time in the morning when the sun isn’t up very long but warm enough to evaporate the dew from the previous evening. Many people are very overprotective of their hard work, understandably, but skipping or not correctly doing one step will leave you with a mushroom-free tub. I find it crucial, especially when introducing the tub to fruiting conditions, to mist not only the sides and lid, but also the cake itself, as the evaporation of the water droplets on the surface is what signals the mycelium to start pinning. One thing I would like to point out is the misting of the fully colonized bulk substrate in the monotub. I use about 5 to 1, H²O to 3% hydrogen peroxide usp respectively, when making my misting mixture for hydration during the fruiting process.
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