What kind of plants like coffee grounds?

Are you a coffee addict? Don’t answer that. Regardless of your answer, if you are wondering what to do with all those leftover coffee grounds, we have an idea for you! Have you thought about putting them into your garden? As weird as it may sound, some plants just can’t get enough of the stuff. In this article, we will explore which plants love coffee grounds and how to use them efficiently.

The Benefits of Coffee Grounds in Gardening

Before diving into which specific plants like coffee grounds or not, let’s talk about some benefits that come with using them in gardening:

  • Acidity: Used coffee grounds are acidic and help bring down the pH levels in soil. This makes it perfect for certain acid-loving plants.
  • Nutrient-rich: After brewing our morning cuppa joe, most of us discard used ground thinking they serve no purpose now. However; these discarded ‘browns’ hold various important elements such as nitrogen (N), phosphorus (P), potassium (K) along with others on the list.
  • Soil Health: Adding organic matter always helps improve soil health feeding billions of microscopic organisms living within slurping up nutrients like Aloe blainzeana using its tubular leaves.

Overall: incorporating used coffee grounds can benefit your whole garden by helping out with pest related issues allow vegetation growth giving rise to more beneficial bacteria/fungi being present – just name a few ways!


Tomato plant prefers slightly acidic soil pH level between 6.0 – 7.0 henceforth including spent ground would aid here however make sure to check accompanying literature available regarding any other requirements from different tomato varieties!


Blueberries prefer very acidic soil at around 4 – 5 pH making spent ground useful but only opt after checking the pH level of soil


Adding coffee grounds to rose beds can help keep pests such as snails, aphids and other insects away. Not only that, they are also helpful in maintaining a balanced pH level for roses.


Azaleas adore acidic soil with 4.5 – 6 pH range making caffeine infused ground perfect fit!

While some plants have been known to actually benefit from coffee grounds and their residual effects others couldn’t care enough! Here are some plants that you shouldn’t use your coffee ground with:

  • White clovers: White clovers hold nitrogen within already so adding additional nitrogen could affect growth.
  • Carrots: Carrot roots fork outwards quickly if exposed to high nitrogen content
  • Asparagus aka talkative vegetable :nodding:: Asparagus will not thank you for including spent grounds as it prefers alkaline soil rather than acidity.

Now we know which plants do better with or without the leftovers from our morning fix-o’-joe, let’s look at how you can add used coffee grounds into your gardening routine:

  1. Composting: Consider adding used Starbucks cups’ left over residuals (ground) after preparing French Press/Espresso machine brewed cuppa joe’s which aren’t processed while composting; this makes up wonderful organic matter post-decomposed leading to nutrient-rich humus excellent for all kinds of houseplant container gardens!
  2. Mulch Matter: Reasoned tree leaf litter being repurposed again works wonders providing structural integrity preventing water runoff having various microbial organisms lending support controlling weed/mosquito breeding & potential diseases by regulating harsh light intensity /UV rays
  3. .Soil Amendment Add-On: Adding leftover sedimentary material onto outdoor flowers is its secondary function whilst its primary function remains providing required nutrient-rich elements
  4. Worms-a-Seaside: Easily attract worms in the mix; utilize excellent worm casting enterprise feeding quality time to a small army moving through soil layers inflicting recycling prowess yielding preferred output over environmental hazards present whilst dumping in bins!
  5. Liquid Based Fertilizing: Coffee grounds are perfect for preparing homemade liquid fertilizer by steeping used grounds within warm water (approximately 24 hours) after that they can be strained leaving just fresh ingredients behind making it usable as possible alternative instead of chemical fertilizers!

Some Notes To Keep In Mind

  • Rainfall/water flow requires monitoring: Due to coffee ground being substantial at holding on aiding slow absorption qualities make sure not to introduce an excessive amount post-rain or after others have been newly added
  • Be conservative regarding usage rates : Try sticking towards regular predetermined usage rate avoiding any surprises i.e especially if your plant’s growing mediums require lower pH levels.

And thus concludes our tour on which plants thrive off of occasional leftover sips from caffeine lovers! While there are plenty of different ways that gardeners can use their spent coffee ground, these are some standards meant for organic gardening!

So next time you’re sitting down and enjoying a cuppa joe, think twice before discarding the used filter – add them into your compost bin or simply scatter it around surrounding shrubs/flowers…or even work something out with local nurseries utilizing your well thought contribution. Just remember always try incorporating naturally processed remnants rather than synthetic/processed ones!

Random Posts