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mrtumnas
Oyster-licious



Registered: 05/15/10
Posts: 186
Last seen: 9 years, 4 months
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Coffee Grounds for Oyster Spawn?
#19071186 - 11/01/13 05:41 PM (10 years, 2 months ago) |
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So I was cooking up some used coffee grounds for an oyster grow and I got to thinking whether or not using coffee grounds as a replacement for grain spawn would work. I would run it through the autoclave like grain spawn in 5lb bags, maybe moisten it a little more first, and then inoculate it with millet from my grain master jars. Then use the colonized coffee ground to inoc. my bulk straw. Anyone ever try this? I thought it might save me a little in grain cost, I'm spending like 40 bucks a week in grain and this stuff from Starbucks is free.
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deadmandave
Slime


Registered: 02/16/10
Posts: 3,355
Loc:
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Re: Coffee Grounds for Oyster Spawn? [Re: mrtumnas]
#19072132 - 11/01/13 08:50 PM (10 years, 2 months ago) |
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It might work 
Where are you located? Try checking animal feed stores for bulk grains. Oysters are not picky so lots of different grains will work. I (live in the grain belt) am able to get 50 lbs of whole wheat for ~$14. YeeeHa!
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john-hai
oyster lover



Registered: 05/11/11
Posts: 285
Loc: san jose ca
Last seen: 1 month, 11 days
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Re: Coffee Grounds for Oyster Spawn? [Re: deadmandave]
#19073532 - 11/02/13 03:14 AM (10 years, 2 months ago) |
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I did not have much luck with coffee as a spawn medium. I had better luck using it as a supplement for my final substrate. if you make wood spawn you can add the coffee as a supplement and it work well. hope this help.
john
-------------------- 3 rules i use to grow mushroom #1 local material #2 recycle when possible #3 make it simple
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mrtumnas
Oyster-licious



Registered: 05/15/10
Posts: 186
Last seen: 9 years, 4 months
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Re: Coffee Grounds for Oyster Spawn? [Re: john-hai]
#19075405 - 11/02/13 02:25 PM (10 years, 2 months ago) |
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John, what didn't work? Did it get contams or did it just colonize too slow?
I made two bags for fun, they don't seem to be recovering as well as the wbs bags I made at the same time, but I'm keeping my fingers crossed.
Thanks!
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john-hai
oyster lover



Registered: 05/11/11
Posts: 285
Loc: san jose ca
Last seen: 1 month, 11 days
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Re: Coffee Grounds for Oyster Spawn? [Re: mrtumnas]
#19076973 - 11/02/13 08:30 PM (10 years, 2 months ago) |
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they contaminate and they are very slow to colonize. when they do colonize and you go to the finale substrate they are prone to contaminate again. let us know how it work out for you.
john
-------------------- 3 rules i use to grow mushroom #1 local material #2 recycle when possible #3 make it simple
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Amanita virosa
botanist by day


Registered: 12/04/11
Posts: 2,458
Loc: north kakalacky
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Re: Coffee Grounds for Oyster Spawn? [Re: mrtumnas]
#19077101 - 11/02/13 09:04 PM (10 years, 2 months ago) |
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Quote:
mrtumnas said: John, what didn't work? Did it get contams or did it just colonize too slow?
I made two bags for fun, they don't seem to be recovering as well as the wbs bags I made at the same time, but I'm keeping my fingers crossed.
Thanks!
Spent Coffee grounds are about THE most likely substrate to contaminate with mold out if anything you could use. It is also hard to get the moisture levels just right. If they are too wet, they compact and it is hard to get 100 percent colonization. That said, if ur gung ho, at least add a teaspoon of hydrated lime per cup to buffer the acidity. Trich loves acidic conditions and this might help. Good luck!
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RogerRabbit
Bans for Pleasure



Registered: 03/26/03
Posts: 42,214
Loc: Seattle
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Re: Coffee Grounds for Oyster Spawn? [Re: mrtumnas]
#19078808 - 11/03/13 04:32 AM (10 years, 2 months ago) |
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Coffee grinds are a bulk substrate additive, not a spawn medium. RR
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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leschampignons
Biochemistry + Mycology


Registered: 08/30/13
Posts: 1,583
Loc: NY/NJ/ME
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Re: Coffee Grounds for Oyster Spawn? [Re: mrtumnas]
#19081020 - 11/03/13 03:44 PM (10 years, 2 months ago) |
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Yes, I too have had the same experience, very contam prone. Anyone ever try coffee grounds + verm to get a bit of air in the substrate? That might have a better chance of working. I will try something like that when I get around to it.
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bakenast
Muffen Stuffer


Registered: 03/14/11
Posts: 920
Last seen: 1 year, 25 days
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I think if you went heavy on the gtg, xfer it may colonize it. would be something cool to try anyways
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cmspice
Stranger
Registered: 07/18/13
Posts: 245
Last seen: 5 years, 3 months
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Re: Coffee Grounds for Oyster Spawn? [Re: bakenast]
#19087502 - 11/04/13 09:29 PM (10 years, 2 months ago) |
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I have some coprinus comatus spawn in a single jar of really old coffee grounds. No contams AFAIK. It's fully colonized. It took quite a while. It's not densely covered in white either; more like spots here and there. I think that's either because there's not enough water in there or because the coffee is too dense.
-------------------- have: blue, brown, pink, yellow, elm, king oyster, reishi, nameko, black poplar, shaggy mane, PESA want: ABM, ganoderma spp., straw mushroom, exotic pleurotus species, ethno cuttings/seeds.
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leschampignons
Biochemistry + Mycology


Registered: 08/30/13
Posts: 1,583
Loc: NY/NJ/ME
Last seen: 3 days, 20 hours
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Re: Coffee Grounds for Oyster Spawn? [Re: cmspice]
#19097641 - 11/06/13 08:42 PM (10 years, 2 months ago) |
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Quote:
cmspice said: I have some coprinus comatus spawn in a single jar of really old coffee grounds. No contams AFAIK. It's fully colonized. It took quite a while. It's not densely covered in white either; more like spots here and there. I think that's either because there's not enough water in there or because the coffee is too dense.
did you sterilize? pasteurize? I suppose coprinus sp. prefer slightly more acidic, soil like conditions.
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