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OfflineLucky
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Registered: 03/26/15
Posts: 21
Last seen: 3 years, 9 months
Coffee grounds start-to-finish?
    #23721531 - 10/09/16 09:18 AM (7 years, 3 months ago)

Watching videos like these:

http://contemporaryfoodlab.com/hungry-city/2014/01/chidos-growing-mushrooms-below-berlin/

Leads one to think that oysters are being grown solely on offer grounds, start to finish, I.e. fruited too. I actually came across a number of other "eco" articles suggesting this, about small startups using coffee (with no mention of nothing else like straw or dust to fruit) and of course using just waste products appeals to me from an ecological perspective. Also being in a metropolis means spent coffee is way more available and ecologically sound to my attempts than straw, which I'd be shipping in.

But in the mushroom-growing world it seems that fruiting on the coffee alone without straw would not be viable, at least I couldn't find proof of it or any teks (if I missed any would you please link me?)

So is it that these articles about startups leave out the addition of the coffee spawn to pasteurised straw - or do you think they're actually fruiting off coffee too? Is it possible?

Thanks in advance for your knowledge!


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OfflineFerather
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Registered: 03/19/15
Posts: 6,325
Loc: United Kingdom Flag
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Re: Coffee grounds start-to-finish? [Re: Lucky]
    #23721961 - 10/09/16 12:10 PM (7 years, 3 months ago)

Every single part of the the tea and coffee plant can be used.
Commonly used substrates are listed here.

Ask restaurants to collect their waste.
Should be free or dirt cheap.


--------------------
                   

Growing mushrooms, general guide and information (Ferather's Journal), https://ibb.co/rG3rML2

https://www.shroomery.org/forums/showflat.php/Number/27857366#27857366

DTS DCH Driver for Realtek [DTS:X] - Unlocked and reprogrammed.


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OfflineLucky
dabbler


Registered: 03/26/15
Posts: 21
Last seen: 3 years, 9 months
Re: Coffee grounds start-to-finish? [Re: Ferather]
    #23722000 - 10/09/16 12:20 PM (7 years, 3 months ago)

Thank you for your input no that link Ferather, I really appreciate anyone answering.

I guess it's just that I saw a number of posts on here discouraging fruiting on coffee grounds or even using it as spawn - when it seems to be increasingly common in urban farms to do just that (check out this post on vice from 5 days ago http://munchies.vice.com/en/articles/how-to-grow-oyster-mushrooms-with-beer-and-coffee-waste - though they mention using wood chips to fruit)

- and I wondered if I was missing something, or if you seasoned shroomery folks had any input on how it's working for them.


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OfflineWalter_Wolf
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Registered: 11/14/14
Posts: 21
Loc: EU
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Re: Coffee grounds start-to-finish? [Re: Lucky]
    #23722102 - 10/09/16 12:47 PM (7 years, 3 months ago)

Coffee grounds are rich in nitrogen which makes them prone to contams. Thats why they are usually used as supplement rather than pure substrate.

cheers


Edited by Walter_Wolf (10/09/16 12:49 PM)


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OfflineQuadman
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Registered: 04/23/16
Posts: 2,529
Loc: IL Flag
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Re: Coffee grounds start-to-finish? [Re: Walter_Wolf]
    #23722135 - 10/09/16 12:57 PM (7 years, 3 months ago)

:whathesaid:yep


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OfflineFerather
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Registered: 03/19/15
Posts: 6,325
Loc: United Kingdom Flag
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Re: Coffee grounds start-to-finish? [Re: Walter_Wolf]
    #23724206 - 10/10/16 03:29 AM (7 years, 3 months ago)

Quote:

Walter_Wolf said:
Coffee grounds are rich in nitrogen which makes them prone to contams. Thats why they are usually used as supplement rather than pure substrate.




It's more to do with the starch carbons than nitrates, coffee beans are much like rye berries.
If I add nitrates to paper, cellulose carbons, I don't suddenly get rife bacteria.

I was PM'd to look into coffee chaff, here are the results.


--------------------
                   

Growing mushrooms, general guide and information (Ferather's Journal), https://ibb.co/rG3rML2

https://www.shroomery.org/forums/showflat.php/Number/27857366#27857366

DTS DCH Driver for Realtek [DTS:X] - Unlocked and reprogrammed.


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Offlinemoonlightmushrooms
farmur

Registered: 05/10/14
Posts: 214
Loc: canada
Last seen: 5 years, 10 months
Re: Coffee grounds start-to-finish? [Re: Ferather]
    #23724316 - 10/10/16 06:14 AM (7 years, 3 months ago)

Coffee chaff is great because it contains some caffeine which has been shown to boost oyster production while at the same time being very dry and ligneous making it difficult for bacteria to establish themselves.

Coffee grounds on the other hand are dense and wet, allowing anaerobic bacteria to colonise the interior while the exterior is a perfect environment for all sorts of aerobic ones. The density, extended time in the 'danger zone' in non-sterile conditions means coffee grounds are a great way to introduce unwanted bacteria into your grow.

TL;DR In my experience you CAN use them to a mediocre result and it the end it's simpler to use chaff if you're looking to recycle something from your local roastery.


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OfflineLucky
dabbler


Registered: 03/26/15
Posts: 21
Last seen: 3 years, 9 months
Re: Coffee grounds start-to-finish? [Re: moonlightmushrooms]
    #23728051 - 10/11/16 11:37 AM (7 years, 3 months ago)

Folks thanks so much for sharing your insight and links! :laugh:


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OfflineGr0wer
always improving
Male


Registered: 09/16/03
Posts: 6,056
Loc: El Paso, TX Flag
Last seen: 5 years, 10 months
Trusted Cultivator
Re: Coffee grounds start-to-finish? [Re: Lucky]
    #23730009 - 10/12/16 12:06 AM (7 years, 3 months ago)

One issue with the coffee hulls is they are some of the most chemically sprayed product on the market, so unless your buying organic your buying chemically laced crap. I use coffee grounds sometimes in my spawn grain prep, ill toss a pot or two worth of spent grains to add to the moisture content since i soak no simmer.


Edited by Gr0wer (10/12/16 12:07 AM)


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