Reader Question: Can I use coffee to water houseplants?
Reader Can I use coffee to water houseplants? Thursday December 18, 2008#spacer{clear:left}#abc #sidebar{margin-top:1.5em}zSB(3,3)A recent question that hit my inbox: “Hi. I keep reading about how you should add coffee grounds to compost or as a mulch around roses, so I was wondering if there was any benefit to watering my houseplants or container gardens with cold coffee. Thanks.” Coffee grounds are a good source of nitrogen in your compost pile or when added directly to the garden. If added in fairly large amounts, they can raise the acidity level of the soil for acid-lovers such as blueberries, azaleas, and rhododendrons. And worms seem to love them, either in your garden or outdoor compost pile or in a vermicompost bin. Regarding whether watering your plants with cold coffee is a good idea, the short answer is: maybe. It depends on the plant. Plants that prefer a more acidic soil (such as African violets, impatiens, Norfolk Island pines, Phaleonopsis orchids, and dieffenbachia) see
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