Coffee grounds are fantastic for tomatoes

by Amber
(Mobile, AL)

This is our first real attempt at growing a garden. I skimmed an article that said to use coffee grounds. So, I've been putting out our daily coffee grounds plus some from my husband's office around each of the plants, at least once per week. The plants are huge, with plenty of fruits. I don't know if the grounds have something to do with it, but they certainly haven't hurt the growing process.

Thanks for this site,


Tomato Dirt responds:
Glad to hear coffee grounds are working for your tomato plants!

Many gardeners have had similar success, even though the jury is still out on whether or not used coffee grounds are a magic bullet in the garden. Nevertheless they're often used on acid-loving plants like azaleas, rhododendrons, blueberries ... and tomatoes.

Be careful, however, not to overload tomatoes with too many coffee grounds. Tomatoes like slightly acidic soil, not overly-acidic soil. Used coffee grounds have a pH of about 6.8.

If in doubt, throw them on the compost pile! There's no question that nutrients are released during composting as organic matter breaks down.

But if you want to try out used coffee grounds directly in the garden, pop them into the microwave to dry them out first. This makes them easier to spread. Then scratch grounds into the soil surface around plants.

Coffee grounds contain nitrogen, potassium, potassium, magnesium, copper, and other trace minerals.

They also have a reputation for repelling ants and slugs.

Thanks for sharing your experience with our readers!

Happy gardening!
Your friends at Tomato Dirt.

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May 24, 2015
Coffee grounds in high peat moss soil? NEW
by: Anonymous

My tomatoes are in raised beds. The soil in the beds is 1/3 pea
t moss, 1/3 coarse vermiculite, and 1/3 composted manure (homemade Mel's mix). I usually toss my coffee grounds in the compost. My room mate has been saving grounds separately since she heard they are good for tomatoes. My concern is that with all that peat already present, coffee grounds would make the soil too acidic. What do you think? The tomatoes seem fine now, they have only been in the soil a couple of weeks or so as it's still early (May 24th).

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Mar 16, 2015
This is something new NEW
by: Anonymous

This is something new which i came to know for the first time now. Coffee grounds are used for tomatoes it's impressive. I do for most of the time and i really wanna implement this idea.

Feb 12, 2015
you are doing good NEW
by: barney

Of course the ground fertility is a factor. And the coffee grounds that you put over there might have given the soil better nutrition or something we don’t know. Anyway, I am happy for you. My garden is just a mess and I am going to make sure I do something for it starting today. Meaningful Use Stage 2

Jun 29, 2014
Coffee grounds NEW
by: Anonymous

I use them in the garden too feed the worms. Which loosens the soil. So nutrients can get to the roots.

May 23, 2012
regular or
by: Anonymous

Decaf ! nice idea,

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