This idea did not come from me. I just latched onto it, Charlotte. Yes, the coffee grounds we have been adding to our acid-loving plants did not benefit from the acidity. They benefited from the organic additive. I guess they benefitted.
I put a cup of grounds in a blender with a quart of water and blended it all for about a minute. Then I poured it through a fine-mesh sieve and then through several coffee filters. I tried to spray the mix obtained through the sieve but it clogged the nozzle up. Thus the coffee filters.
