The next time you finish your morning coffee, think twice before you dump the grounds. Coffee grounds can do magic in your garden, not necessarily in the ways you would expect. They do not provide abundant nitrogen and do not lower soil pH much. But they can enrich your garden soil, compost pile and help in other ways.Coffee grounds contain 2% of nitrogen, but plants can not use this until it breaks down. As these grounds decompose, the low nitrogen level in them acts as a long-acting fertilizer.
Coffee grounds also provide a healthy and slight dose of other basic nutrients like phosphorus and potassium, secondary nutrients like magnesium and copper of which potassium, magnesium and copper portions are used by plants right away.
Coffee grounds also contain calcium, manganese, zinc and iron, but the level of these nutrients is too low to have an effect on plant’s growth.

Coffee grounds have long been bragged to lower the soil pH, but most of their acidity goes straight from beans to brew. Laboratory analysis shows that they are slightly acidic to neutral and make a minor to no impact on soil pH.

But who cares about the acidity, coffee grounds improve soil structure directly and in no time. Poor Soil, low in organic matter benefits from scratch when coffee grounds are applied.Coffee grounds in the soil also improve the seed germination and growth of the plant. What is more advantageous is that they prevent soil borne diseases like wilts, fungal rots, and some bacterial pathogens.