How often should you add eggshells and coffee grounds to house plants?

I’ve read that you can add eggshells and coffee grounds to house plants. How often should you do this

  7 answers
  • FL FL on Dec 27, 2017
    "Breakfast, often billed as the most important meal of the day, gives humans energy and helps them focus on the day ahead. After breakfast, don't throw your eggshells and used coffee grounds away. Instead, use them to fertilize your garden. Eggshells contain nearly 98 percent calcium, and coffee grounds offer generous helpings of copper, nitrogen and potassium. Just like humans, plants need these nutrients to thrive and produce flowers or fruit. Feed your plants eggshells and coffee grounds to fertilize them and keep them healthy."

  • Marsha ShiningWoman Marsha ShiningWoman on Dec 27, 2017
    Left over tea too!

  • Nancy Turner Nancy Turner on Dec 27, 2017
    Coffee grounds are pretty acidic, so don't use too much too often in plants that aren't acid loving. If you plan to use egg shells to help fertilize, the finer the crush, the faster it can get into the soil to give off the nutrients.

  • Shoshana Shoshana on Dec 28, 2017
    We add coffee grounds to our plants when they are looking a bit weak or about once a month.

  • 2dogal 2dogal on Dec 28, 2017
    Actually, it depends upon if your plants need more calcium - from the eggshells and/or are acid loving plants that need the acid from the coffee grounds. Coffee grounds also help loosen the soil, but houseplants don't need their soil loosened until potting up. If you use a good potting soil, you don't need to do this....

  • Jeanne Grunert Jeanne Grunert on Dec 28, 2017
    Do not add them directly to your house plants. They can be added to compost.

  • Linda Linda on Dec 28, 2017
    It depends on your plants & the size of your pots. you could add a small amount monthly. if you have cats or dogs you might want to make a slurry in the blender - then filter them before adding to plants. I do this because our dogs & cat try to remove the eggshells from my plants. I also add a pinch epson salt once a month.