Vermicompost Coffee Grounds. Adding a large volume of coffee grounds negatively affects the vermicomposting bin by making it too acidic. Coffee grounds are rich in potassium, magnesium, calcium, iron, and other nutrients.

You can only add about an inch of food scraps,. The data reveal that coffee grounds can be decomposed through vermicomposting and help to enhance the quality of vermicompost produced rather than sole use of kitchen. This is a coffee grounds observation and question.

