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coffee is great fertilizer for houseplants
5 from 2 votes

All-Natural Coffee Fertilizer for Houseplants

My houseplants and I have something in common, we both love coffee! I give left-over coffee to our houseplants, and they love it! It's the number 1 thing I do with leftover coffee, and it has nothing to do with me drinking it! Yes! Diluted coffee is an all-natural fertilizer for houseplants. 
Prep Time2 mins
Active Time2 mins
Cuisine: American
Keyword: fertilizer, houseplants
Yield: 5 cups
Author: Ren Lenhof
Cost: $2.00


  • Measuring cup


  • 5 cups Room Temperature Water
  • 1 cup Room Temperature Brewed Drip Coffee flavored blends are OK. decaf is OK.


  • Make sure your brewed coffee is at room temperature and add water to dilute.
  • Water your plants with this homemade diluted coffee houseplant fertilizer once every two weeks.
  • Watch your plants grow!


  • Decaf and full caffeinated coffee will work great! It’s not the caffeine that helps the plants thrive, it’s the nitrogen and other micronutrients.
  • If your houseplant’s leaves become brown at the edges after the coffee fertilizer application, then either refrain from using as much coffee next time or skip it altogether.