How to Use Coffee Grounds as Fertilizer


Coffee Grounds as an organic Fertilizer Substitute

Nothing beats a freshly plunged cup of coffee to kick start your day. But did you know that pouring left over coffee grounds down the kitchen sink can build up over time and block your drains. So what exactly should you do with those excess coffee grounds? Whatever you do don’t just throw them out! Coffee grounds are an excellent organic and cost effective fertiliser for your garden. Rather than pay for expensive store bought fertilizers simply use your discarded coffee grounds to give herbs, plants, trees and shrubs a boost to help them reach their full potential and grow much faster. Below are some tips and ideas on how to use coffee grounds as an organic fertilizer.

What you need:

  • 250 grams of coffee grounds
  • Compost bin
  • Garden spade
  • 20 litres of warm water
  • 30 litre bucket


  1. The first thing that you need to do is to save the used coffee grounds in a suitable container such as an old coffee can each day after every usage. Before composing your coffee grounds you will need an extra area in which to keep them if in a barrel.
  2. Mix at least ½ pound of coffee grounds together with 5 gallons of warm water in a pail to create a very fast-acting liquid fertilizer.
  3. After that, the liquid fertilizer can be poured around the base of your tree in order to provide it with natural fertilizer.
  4. Sprinkle some of the coffee grounds around the tree before starting to water the tree to create a slow-release fertilizer.
  5. Do not over-fertilize your tree with the coffee grounds. It is sufficient enough for you to do it at least annually or biannually.
  6. Spread your old grounds around the affected tree and it will surely drive any pest away especially the ants because ant does not like coffee.
  7. The coffee grounds are having the same nutrients as the one being sold in store bought plant fertilizer. This nutrient helps your plant to grow healthy and at the same time, you will be able to save some money and also do recycling activity at the same time.
  8. The coffee grounds can be used like mulch. Its dark colour also attracts the sun and at the same time warms the soil which really helps in early planting of acid loving pants. Remember to watch and see whether the ground coffee does not form a hard crust. To clean-up this problem (if any), you simply just use a garden spade to break up the crust.
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