REMOVE vacuum-sealed transport bags, prior to inoculation.
Sterilized mushroom grain spawn in a gusseted 3T 0.2 micron autoclave spawn bag with filter patch. Planet Spore’s rye berry grain spawn is composed of 100% natural premium rye berries which are commonly regarded as the best grain spawn for for mushroom cultivation. Our grain spawn is free of chemicals or any additives and is recommended for use in conjunction with our pre – pasteurized mushroom fruiting bulk substrate.
Once the grain spawn is fully colonized, we recommend mixing it with our mushroom fruiting bulk substrate. We recommend using a three bulk substrate to one grain spawn ratio for optimal yields. You may also perform what is called a grain transfer. A grain transfer is taking your colonized grain spawn and transferring it to more sterilized grain to promote further propagation of mushroom mycelium growth. Generally you can transfer one bag of fully colonized grain spawn to five to ten bags of sterilized grain (depending on the weight of the initial bag).
Our rye berry grain spawn goes through a rigorous process before it is ready for final sale. First we thoroughly wash the grains, then soaking them for 24 hours in a gypsum water bath which ensures optimal mineral levels. After the soak the grain is simmered for 10 minutes in clean water. The rye berry grain spawn is then sterilized at 15 PSI in a lab grade autoclave for 2 hours.
The product comes impulse sealed in sterile, 3T 0.2 micron autoclave spawn bag with filter patch and may be stored at room temperature for up to 2 weeks. If more time is needed, it can be put in a freezer until later use.