Can I put old coffee ground directly into my houseplants? And if so, how much is too much?



  1. 0 Votes

    Old coffee only benefits houseplants that thrive in acidic soil, as coffee itself is very acidic. Some houseplants that enjoy acidic soil include the African violet, the aloe plant, the azalea, begonias, bromeliads, the hyacinth, the hydrangea, impatiens, and the iris. When you use old coffee, be sure to add extra water to the coffee to dilute it, then water it as you would normally do. I would use about 1/4 cup coffee for 1 cup of water. Let the coffee cool before pouring it onto your plant.

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