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This is something new i am trying with coffee grounds before the worms get to chow down on them.
During the cooler weather i drink a lot more coffee than i do in the summer so i have more than my herd can handle right now. A while back for a lark i ordered a Oyster mushroom growing kit. I have to admit i had never tried Oyster mushrooms thus the choice when buying the kit. When it arrived i found that the growing media was used coffee grounds and bird seed hulls (millet).
After goggling reading up on how to grow mushrooms i started saving up some used coffee grounds for a try at growing some mushrooms in my own grounds. Oyster mushrooms sell for 5 dollars a pound locally so i figured its worth a try. When i had enough grounds I took a start from the mushroom growing media and added it to the grounds.
Today a little over week after starting my own grounds i noticed the spawn is growing inside the grounds. So if i don't make a major mistake i should have free mushrooms. The only drawback to the setup is i have found that Oyster mushrooms are not my favorite mushroom. I don't hate them i just prefer the button mushrooms.
If the mushroom info is right the coffee grounds should loose about half their weight making mushrooms. And when i am done harvesting mushrooms i can give the spent mushroom spore/coffee ground mixture to the worms.
If you guys want to try it you will need a source of mushroom spawn.
the grounds should be damp but not soggy.
You should use new coffee grounds just out of the coffee maker it sterilizeas the grounds and store in a sealed bag until ready to add spawn, don't use any grounds that have started to turn white.
The container should be plastic with a few very tiny vent holes in the top. I am using a ziplock bag with a circle of pin holes at the top.
When the inside of the bag is white (about a month) cut an X a couple inches tall into the plastic and soak the whole bag in a container of cool water overnight. After soaking place the bag back in the cool space. You need to spritz the mushroom spawn with water every day. I found it works better if i put the whole kit into a larger plastic bag and loosely close the top to keep everything damp. The mushrooms can dehydrate into hard crispy chunks if the humidity is too low.
It should take a month for the mushroom spawn to get mature enough to start making mushrooms. And the kit should keep making mushrooms for 6 to 8 weeks.