grounds are fantastic in an active composting environment. they make really great, nutrient-rich soil. less so for indoor plants with their tiny, relatively ste

grounds are fantastic in an active composting environment. they make really great, nutrient-rich soil. less so for indoor plants with their tiny, relatively sterile environment. Indoor plants usually suffer from two problem wrt coffee grounds: a "that's going to mould," problem and a "that's too acidic on it's own to be useful," problem.