May 10, 2019

The #1 Thing I Do With Leftover Coffee (PS: I’m Not Drinking It)


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My houseplants and I have something in common, we both love coffee! Yes! Coffee is an all natural fertilizer. 

Yep! I give coffee to our houseplants and they love it.

It’s number 1 thing I do with leftover coffee and it has nothing to do with drinking it!

Do you always have left over coffee sitting in the coffee maker?

Or, are you like me who orders a grande iced coffee and somehow leaves it on my desk and then I find it the next morning feeling guilty for wasting $6!?

Did you know you could use it as your watering your houseplants for extra nutrients?

When I found this out I was mind-blown, in the best way!

Leftover coffee can be used as an organic fertilizer for your houseplants and I highly recommend it!

coffee is great fertilizer for houseplants

I started watering my houseplants with diluted left over coffee last year and they went from happy to absolutely thriving! 

I got the idea because I was curious about how the left over coffee (and coffee grounds) were contributing to our compost pile in the backyard. I throw as much as possible in our prairie area and what doesn’t get eaten by the rabbits has helped with the growth of wild flowers!


I did some research and found that coffee grounds and coffee are a great source of nitrogen for soil. Nitrogen is important for houseplants because it helps them produce more leaves & stronger stems. Coffee is also contains calcium and magnesium which are also great for houseplants.

BOOM! Coffee can be used as an all natural fertilizer!

So, do you just pour the coffee directly into your houseplants?

Nope! I dilute it.

The mixture is 1/4 Cup Coffee to 2 cups Water because coffee can be pretty acidic which can potential be dangerous for your houseplants. The diluted coffee should be the color of a weak or watered down iced tea. 

Leftover coffee is the perfect natural fertilizer for your houseplants!

I water my plants with diluted coffee about once every 2 weeks and they all seem very happy when I do! My Fiddle Leaf Fig has been growing lush new leaves like crazy since I started the coffee watering regiment.

Have you given your houseplants coffee? Did you notice a difference?

Want more tips for fertilizing your houseplants? I wrote about the fertilizers we use for our houseplants that keeps them happy! 

coffee is great fertilizer for houseplants. our fiddle leaf fig loves coffee

My Fiddle Leaf Fig loves when I give it coffee

houseplants love coffee as a natural fertilizer


  1. Deva

    July 3rd, 2019 at 4:43 am

    Hi dear! i found your blog and really like it! 🙂 I’m italian so i do coffee with coffe machine using the powder.
    do you think i can put the exhausted coffee powder over the ground? caould it work? thank you for the answer!

  2. Ginny Musco

    July 6th, 2019 at 7:19 am

    Can you use coffee grounds in the houseplant soil ?

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