Gardening and Landscaping Stack Exchange
Gardening and Landscaping Stack Exchange

Questions tagged [coffee-grounds]

For questions about using coffee grounds as a soil amendment/compost.

Coffee grounds are a common household waste. They compost well and help to add some drainage texture to the soil. They can be added directly as a soil amendment to help acidify the soil, add nutritional value, and possibly as an organic pest deterrent (some creatures might not like the granular texture, although this is debatable).

Use this tag for all questions about how to dispose of coffee grounds and how to use them for compost / soil amendment.

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How do I apply spent coffee grounds as a fertilizer?

I've read that spent coffee grounds work well as a fertilizer. But the methods of application are all over the map. Some indicate using it in compost, others suggest spreading it and broken eggshells as an insect deterrent, and others recommend…
Jon 'links in bio' Ericson
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Can I put coffee filters into my compost?

I've heard that coffee grounds are a good "green"(nitrogen rich) to put in your compost, but I was wondering if I could throw the filter in there as well? They are the standard "accordion side" white ones.
Abe Miessler
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How many coffee grounds are too many coffee grounds for composting?

I have a pretty steady access to about 4 pots of coffee worth of coffee grounds each day. I have heard coffee grounds are great for a compost pile, but I am wondering how much is too much? Is there a good ratio to maintain between coffee grounds and…
The_Compostinator
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What household wastes can you use to fertilize without composting?

I cannot compost, no room, no permission. My kitchen produces a steady output of used coffee grounds, which is a good slow release nitrogen source (2.3 .06 .6), should not attract pests or transmit diseases, and used in moderate amounts should not…
Eric Nitardy
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How much coffee grounds should I add to my compost (and how frequently)?

I have been reading that spent coffee grounds can be used for fertilizer and/or composting and also came across this question on this site. I have a compost pile in the yard that holds roughly two 33 gallon trashbags full of uncomposted leaves…
Brian
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What's this green stuff on my soil?

I dumped my french press on this potted fig tree a few times, perhaps that was a mistake. Today I noticed this this green stuff on top of the soil. What is this?
gmcerveny
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How do coffee grounds benefit potted plumeria?

I have heard that adding coffee grounds to the soil - as a top layer/mulch - help potted plumeria. But what about this helps the plant thrive? Bonus Q: I have heard the same of banana peels.
user51113
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Do coffee grounds in gardens deter cats?

There are several sites that suggest using coffee grounds in the garden, to keep out cats. I haven't tried it, but there are some beds on my property which could do without cats digging around and occasionally attacking plants (beats me why they do…
J. Musser
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Can I grow spider plants in coffee?

Long story short, I have stale ground coffee (whoops vacation whoops) and two spider plants growing in pure water. Can I combine the two, or is that too acidic? I know that spider plants like acid, but... perhaps that's too much. Or perhaps there's…
j6m8
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Can the filter papers in coffee K-pods be used for composting?

I already know it's a lot of trouble to remove them for composting, but does anyone know if the paper filters inside the K-pods are actually biodegradable? We no longer use the old fashioned coffee maker so these pods are all I have access to and I…
Matt
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How thick do I need coffee grounds to be in order to keep grass back?

I'm running into a slight grass problem where I planted my blueberry bushes, and was wondering how thick I should make my coffee ground mulch around the blueberry bushes to prevent the grass from coming up.
black thumb
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How should I add spent coffee grounds to Azaleas?

My garden has rocks and weed fabric. Must I remove both and add the grounds to the soil or can I just add on them on top of the rocks?
bevypop
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Can roasted coffee as soil burn soft leaves?

Yesterday I well fed my cannabis sativa (Wikipedia) plants with fresh shredded extra roasted Starbucks coffee under the assumption they will grow better, but instead of that this morning I saw the left half of my plant was abused and deeply…
tungsten
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Is it helpful to add coffee grounds to a droopy mother-in-law's tongue?

I have a mother-in-law's tongue, Sansevieria trifasciata, that's getting a bit yellow and slightly droopy. A friend recommended that I add some coffee grounds to the soil, which I've been doing, but I'm worried that the grounds are making the soil…
Morella Almånd
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Coffee grounds as pesticide or fertilizer (in general and/or for Chinese Evergreens)

Earlier today, I noticed a lot of small tiny flies emerging from the Chinese Evergreens I purchased last weekend. At the time, I just had my freshly ground and used morning coffee beans... so I tried dumping the grounds in a layer on top. This seems…
ina
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