Make Your Grounds Go Further

A coffee filter filled with coffee grounds.

U.S. coffee-drinkers consumed more than three billion pounds of coffee last year. That’s a lot of grounds!

Did you know that all those used coffee grounds can help your garden flourish and your home sparkle?

Coffee mixed with soil can be used as a natural fertilizer. Used coffee grounds provide gardens with an abundant source of nutrition. Recycling coffee grounds is not only beneficial for gardeners but it helps in reducing the amount of waste going into landfills. When coffee grounds are dumped into landfills they create methane, which is a greenhouse gas. Methane is known to be more harmful than carbon dioxide, another greenhouse gas that causes global warming. If we are able to keep coffee grounds out of landfills we’ll be one step closer to eliminating greenhouse gas emissions.

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Coffee grounds contain a high amount of nitrogen. When scattered across soil before rain or watering they will slowly release nitrogen into the soil. When compost is mixed with coffee grounds it causes the soil temperature to rise and stay hot for long periods of time. The high temperature kills weeds and will allow your garden to flourish beautifully. Coffee grounds are acidic, which benefits “acid loving” plants. For instance roses, camellias, blueberries, and azaleas all flourish when sprinkled with coffee grounds.

Recycling coffee grounds also helps to feed worms, and keeps troublesome insects away. Earthworms love to feed on used coffee grounds; it helps them grow and reproduce. Having lots of worms is an excellent way to keep a healthy garden. It is important to have worm activity in your soil; this mixes the soil and helps in mineralizing your vegetation. As you all know the odor of coffee is very strong, the odor can sometimes be too strong for humans. In the case of insects like ants, slugs, and snails the odor works as a repellant.

Don’t brew your own coffee? You can still make a difference! Ask your local coffee shop if they give away their used grounds. Many shops already have them bagged up and ready to go.