this post was submitted on 24 May 2024
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Soil Science

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I've recently tried mixing the used coffee grounds in baking soda, and I'm seeing a very visible chemical reaction. I haven't tried putting it in the ground yet though.

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[โ€“] protist@mander.xyz 15 points 5 months ago (1 children)

Coffee grounds aren't very good fertilizer, they still need to decompose. Better to mix them in your compost pile and wait til the compost is finished to use it.

Regarding acidity, like the other guy said, used grounds aren't very acidic. But ultimately, the pH question is going to depend on lots of factors, including the pH of your existing soil and the optimum pH of the plants you're growing. Sometimes you want to add acidic amendments. Where I live, there's so much calcium carbonate in the soil, no amount of acidic compost would even make a dent in the pH

[โ€“] mambabasa@slrpnk.net 3 points 5 months ago

Alright, I'll find a way to compost them