Coffee 2 Compost Project

Using all those spent coffee grounds as compost is a very sensible choice.

Just add them to the heap and let the compost bin do its job. If you choose to drop coffee grounds in the compost bin, remember they qualify as green compost material. You may want to balance it with brown compost material (like dry or dead leaves).

Don’t worry about the acidity as spent coffee grounds tend to have a neutral pH value of between 6.4 to 6.9. But from trial and error we recommend matching this coffee rich compost with plants or fruits like hydrangeas and blueberries.

Root vegetables like carrots and radishes respond well to the acidity.

Adding coffee grounds directly to the soil as a fertiliser can be a good option. Coffee grounds are rich in nutrients, especially nitrogen. They also have some amount of other nutrients like potassium and phosphorous. Overall, this means that adding coffee grounds to your garden can work fairly well as a fertiliser.

Coffee should be spread in a thin layer, rather than being clumped in one place. Spreading it as a thin layer not only spreads out the nutrients, it also reduces the chances of caffeine affecting one particular spot of the garden.