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How much spent coffee grounds do you put in your compost?

 
pollinator
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I have a limitless supply from a cafe, but i’ve read coffee has some negative properties for plants, even when composted. Some sources say no more than 10% could be ok. I wonder how much other people use?

I’ll use compost only as potting mix and for raising seedlings, so I can’t risk anything negative to germination or fast seedling growth. I feel a bit worried I added coffee to my current compost bin.
 
gardener
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I can't speak from experience, but some of the sources I have researched allow for 10 to 20 percent of a compost pile without averse effects.
 
pollinator
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Tim,   A few posts to check out....Coffee Grounds 1
Coffee Grounds 2
 
gardener
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Oh, for the problem of having TOO MANY coffee grounds!  I can only dream.

I've got java envy.
 
pollinator
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About 40% of my allotment compost heap is coffee grounds and biodegradable filters! The rest being shredded straw/sawdust and lawn clippings.
 
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