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Grain Spawn
Preparing and using whole grains for mycelium running, such as rye grain, wild bird seed, and grass seed.
Documents:
Sort: [Name] [- What's the difference between grains and PF - tek substrate?
Colonization Time: The main difference between whole grain and PF style jars is that whole grain remains loose, and can be shaken, thus spreading the mycelium points and colonizing faster.
- Cybers WBS myco-bag Tek
Bulk Growing with Bags
- How long should colonization of grain jars take?
It depends on the species or strain, grain type, the water content, the inoculum type and the incubating temperature.
- How can I tell if a grain jar is fully colonized?
Once all the grains are visibly covered with white mycelium, then the jar can be considered done.
- Which kinds of grain can I use?
You can use almost any grain as long as it's in it's whole form.
- Why does my grain look "greasy" and overly wet after sterilization?
You used too much water.
- Grain Soak No Simmer
for non cooking mother fuckers
- Doc34`s Wild Bird Seed Tek
Outdated Grain Prep, do not use unless you're in the year 1992
- What is G2G and how is it done?
G2G means Grain to Grain transfers.
- Cracked Corn Preparation Technique
A fast colonizing substrate utilizing cracked corn.
- What are some good grain recipes for different species?
A summary of recipes for the creation of spawn or substrate using whole grains.
- What's the best way to prepare grain for mushroom cultivation?
The 3 most important aspects of grain preparation are to achieve an uniform, correct water content, to kill all contaminants and to get a shakeable substrate.
- Popcorn Tek w/pics
A nice writeup on preparing popcorn as substrate with many pictures.
- 6T WBS Tek (Wild Bird Seed) Bulk Spawn Preparation Method
A document describing the preparation of bird seed for use as spawn or substrate.
- Popcorn Grain Spawn
An easy spawn or substrate preparation utilising corn
- What can and can't I do with colonized grain jars?
You can case grain directly You can inoculate more grain jars You can spawn bulk substrates like straw, cow or horse dung or compost You can make mycelium syringes You can't.
- Fool Proof Birdseed Method
A illustrated guide for preparation of grain spawn using birdseed
- PSiLO187's Simple Bulk Spawn Production Tek
Another bulk spawn method aimed for beginners.
- When should I shake whole grain jars?
When you prepare whole grain jars, it´s good to shake them after the pressure cooking while they are still hot to redistribute the wetter and drier kernels.
- Do I need a pressure cooker if I want to prepare grains?
Grains usually contain higher loads of bacterial endospores which are very hardy and which survive the temperature of boiling water, therefore a normal cooking process can't kill them.
- Can I use marijuana seeds as a substrate?
Hemp seed are very high in fats, something not generally desirable in the mushroom cultivation, but you will most likely get some growth.
- How to inoculate a jar with a poly-fill filter lid with a syringe?
Make a separate hole in the lid, put tape over it before sterilizing and inoculate through that site and re-tape after you inoculate.
- Should I let the grain sit and soak overnight, or pressure cook right away?
Grain(particularly rye and wheat) carry high loads of bacterial endospores.
- Ez felt plastic lids
reusable plastic lids tried and tested

