Go to your nearest swimming pool supply store and purchase a gallon of
muriatic acid. Pour your coffee grounds into a mixing bowl and add the
muriatic acid slowly, mixing as you go. Continue until you have a thick
paste, about the consistency of Elmer's Glue. Apply four tablespoons of
this mixture around each annual or perennial in your garden. For large
perennials such as hosta, you may wish to double the dose.
Any left over muriatic acid makes a great tooth paste when combined with
Why would anyone want to add muriatic acid (hydrochloric acid) to
coffee grounds??! What benefit would this acidic paste have for
plants? I've used muriatic acid to etch concrete and had to wear
rubber gloves so that my fingers wouldn't dissolve. I wouldn't
brush my teeth with it. If you add an acid to baking soda, it reacts
instantly. Is this a sick joke?
Yeah, it's a troll that pops up every now and again with the same dumb
Coffee grounds can be used directly as a soil amendment around any acid
loving plant - hydrangeas, rhodies and azaleas, blueberries or pretty much
any broadleaved evergreen shrub. I routinely bring home bags from my local
Starbucks for such a purpose. Larger quantities can be added to your
pam - gardengal
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