Q.Are There Any Advantages To Changing The State Of Spent Coffee Grinds Before Adding It To The Garden?
Changing the state would mean: Drying coffee grounds. Washing and then drying coffee grounds. Growing mold on coffee grounds. Breaking up or leaving compact.
Certified GKH Gardening Expert
Adding used coffee grounds to the garden will improve the tilth of the soil, but it does not change the acidity level or add much in the way of nutrients. However, adding used coffee grounds to your compost pile will increase nitrogen in the compost.
There is no need to change its state in the ways you mentioned. This article explains the ways you can use coffee in the garden: