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Still, Marino says there are definitely some rules to keep in mind when using coffee grounds as fertilizer.
Here, she shares everything you oughta know.
Thats because people are using different types of grounds, she says.
To her point, there are two broad types of coffee grounds: fresh and used.
Fresh coffee grounds are ground-up coffee beans that havent yet been used to make coffee.
former director of brand marketing at The Sill
Used coffee grounds are the leftover remnants from making your brew.
Used coffee grounds dont have much acidity left at all, which is why those are better to use.
While used coffee grounds lose their acidity through the coffee-making process, they dont lose their beneficial nutrients.
Nitrogen and potassium are two huge nutrients in used coffee grounds, Marino says.
Its not something I would suggest someone start doing as the thing thats going to help their plants.
The evidence out there is really inconclusive, she says.
Instead, I would encourage people to slowly test for themselves.
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Marino says that the number-one mistake people make when using coffee grounds with plants is just using too much.
former director of brand marketing at The Sill
The added nitrogen and potassium in the coffee grounds is good in moderation only, she says.
You really want to dilute it and use it sparingly.
Its like a little baby step, she says.
But if it seems to be doing more harm than good, youll know to cut back.
Besides being used as fertilizer, used coffee grounds can also be used in mulch.
I recommend only using them during this time period and skipping the winter months when plants are semi-dormant.
Clearly, using coffee grounds to help your plants grow is tricky business, and its certainly no guarantee.
Just stick to the plants on the list, start slowly, and see how it goes.
You might not be the only coffee lover in your house.
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