Is it true that coffee grounds are good for plants?

Is it true that coffee grounds are good for plants?

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  1. Used coffee grounds can be very good for soil if used and applied correctly…which is good for plants.
    CG are tiny organic particles that can be used to amend clay, or sandy soil to make either more loamy. Earthworms and red wrigglers both love CG’s.
    I place cardboard to smother vegetation, and to create mushroom lasagna beds, and always sprinkle CG’s between or under the layers and keep them damp.
    Used CG’s, have NPK trace nutrients being relatively N rich at 2.1%.
    Mold and fungi can lead to problems… Since I grow mushrooms outdoors, this is a good thing, if /when I can get my edible ones to outpace any competitors.
    CG can cause damping off, which is where fungi attack young seedlings, and often kill them.
    I do not…do not, put them right up against any seedling.
    As I shared, I intentionally grow mushrooms in them first, or typically compost them secondly.
    Broadcasting them over an area, over time…like my front flower beds is/was aok too.
    I was getting them by the 5 gallon bucketfuls, 35 gallons a week, but, I perhaps let too many other people know how to use them correctly. Duh.
    I now have competition.

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  2. Coffee grounds are acidic, so will lower the pH of the soil. That may or may not be beneficial to a particular plant.
    If the coffee grounds are added to a compost pile, they will break down and become an excellent soil additive.

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  3. Despite lots of testimonials online, coffee grounds are not that good for plants. Coffee grounds have some caffeine left in them and for many plants caffeine causes poor growth. Coffee grounds will not acidify your soil, the acid is leached out into the brewed coffee. They do not act as a fertilizer either, they have only a tiny amount of nitrogen in them. Coffee grounds, like most food waste , can be put into a compost pile where the caffeine is leached out.
    The idea that coffee grounds are good for plants is largely urban myth.

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  4. Yes. Coffee grounds are rich in nitrogen. Plants love nitrogen.
    Some people worry that we’ll us too many coffee grounds, but that’s highly unlikely. You can’t drink enough coffee to do any serious harm to garden.

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  5. To use coffee grounds as fertilizer, simply sprinkle them onto the soil surrounding your plants. Summary Coffee grounds make great fertilizer because they contain several key nutrients required for plant growth. They can also help attract worms and decrease the concentrations of heavy metals in the soil. Coffee grounds are highly acidic, they note, so they should be reserved for acid-loving plants like azaleas and blueberries. And if your soil is already high in nitrogen, the extra boost from coffee grounds could stunt the growth of fruits and flowers.

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  6. Oregon State University has done a great deal of research on this. They have composed tons of coffee grounds and they have a great deal of information on their website.

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