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Any ideas on what to do with the mushroom grow waste?

 
Posts: 30
Location: Reno, NV
fungi trees
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I know of some people growing worms on mushroom substrate waste, others use it as fertilizer in their gardens..What else could I do with it? What about shiitake blocks waste? -often get moldy
 
gardener
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Location: Arkansas - Zone 7B/8A stoney, sandy loam soil pH 6.5
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By waste do you mean used up spawn?  I take mine and break it up and spread it around the garden for most of it. I do take a couple of pieces as starter for new mushroom bags and logs.

exhausted spawn really isn't, it just needs space and new medium to continue growing as long as you do it soon after it stops flushing new mushrooms.

Redhawk
 
Daniel Tura
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Location: Reno, NV
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Thanks, yup, i'm reffering to the spent substrate (after you collect several mushroom flushes from it you'll get waste). Indeed, that's a good idea to reuse that as spawn -this particularly works for oyster mushrooms,but what do with it if you grew lion'mane or shiitake on it. For these mushrooms you would need mold/bacterial free spawn (not the case with oysters).
 
Bryant RedHawk
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Location: Arkansas - Zone 7B/8A stoney, sandy loam soil pH 6.5
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I have four trees I did this procedure to with lions mane and shitake without any problems.
 
Daniel Tura
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You mean you've inoculated living trees with these two mushrooms?
 
pollinator
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In general I would just chime in that this is most definitely not a waste product. I pick up truckloads of spent grow bags from a local mushroom farm several times a year, it is a great addition to compost, great food for worms (it almost always already has a bunch of wigglers in it), and I like to use it as an addition to mulch. As Redhawk said it could also serve as the basis for another round of mushroom cultivating. When I built my mini hugels I incorporated a whole bunch of spent shitake blocks (including ones with blue/green mold) throughout the mounds. I haven't gotten any shitakes but I also haven't seen any fungal issues for any crops and there is a ton of hyphae as I've been digging around in the garden this summer.
 
pollinator
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I'm going to share a recent discovery I made...

This year I've been experimenting with incorporating mycelium into sheet mulch. The ground is frozen for about 6 months of the year, and I've noticed things decay slowly, compost takes forever to finish off etc.

I've been adding organic matter to my soil, so I'm looking to sheet mulch not only to suppress unwanted vegetation, but also as a means of composting in place. I got some spent grow logs and I've been building sheet mulch using different combinations of newspaper, hay, straw, used coffee grounds, and the grow logs sliced into discs.

I'm using between 5 and 15 gallons of used coffee grounds per log by the way.

I noticed an explosion in the slug population which is par for the course in sheet mulching. But they don't eat my plants. It appears their preferred food is the wet newspaper. I've been observing these slugs on a regular basis. They tend to leave the mycelium alone, and they avoid the used coffee grounds.

In the beds where the mycelium is covered by a thin layer of newspaper I discovered a neat dynamic. The slugs graze on the newspaper but not in a random fashion. They tend to eat the newspaper in spots until they eat right through, and then they move on to a fresh area. So I'm seeing fissures appear in the newspaper. These fissures in turn are allowing oxygen into the sub layer of mycelium and used coffee grounds, and the mycelium react by fruiting up through these holes.

Rather than having an explosion of mushrooms in my garden beds everywhere and all at once like I was expecting, I'm getting a controlled production thanks to my little workers.
 
Bryant RedHawk
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Location: Arkansas - Zone 7B/8A stoney, sandy loam soil pH 6.5
1115
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Daniel Tura wrote:You mean you've inoculated living trees with these two mushrooms?



No, I cut new logs for inoculation. I do a whole tree per mushroom specie.
 
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