Name: Anita West Fulton, NY (Zone 5a) "Let food be thy medicine...."
I've had one bad experience with coffee grounds. My yew didn't like it and died where the grounds touched it. The yew is ground cover for raspberries and roses. Roses and raspberries, of course, were fine. I just cut out those parts of the yew and let the good parts grow back. I was really surprised that happened.
Its easy for me to believe in miracles when science can't explain why a blade of grass has its shape and that is just one plant and one attribute.