5 Uses of Coffee Grounds in Your Garden

Did you know coffee grounds come in handy in your garden just as it does in your cup? If you didn’t, now you know. Instead of throwing away the leftovers, you could find good use for it in your garden.

Coffee possesses distinct features and nutrients that adapts it to the various uses. Coffee grounds have so many uses in the garden. These are the five most common uses of coffee grounds in the garden:

1. An excellent farm manure.

Coffee ground is a very rich organic manure that contains essential nutrients and micronutrients that can be used on garden plants to ensure speedy and healthy plant growth. These nutrients include: nitrogen, magnesium, potassium and calcium. The high percentage of nitrogen, 1.45%, even makes it more effective.

Moreover, it is a slow-release fertilizer. As the name suggests, a slow release manure is one that slowly releases nutrients into the soil, increasing its effective lifespan eliminating the need for frequent fertilizing.

How to apply?

You could either sprinkle it directly onto the soil or add to the compost heap to accumulate, provide nitrogen and later used with the other organic matter in the compost as manure.

Coffee grounds could also be used to make liquid fertilizer for container and garden plants. Place a handful coffee grounds in a bucket, fill it with water and let it stand undisturbed for a day or two. Boom! Your liquid fertilizer is ready.  

2. An effective pesticide.

Are small pests in your garden giving you a headache? Worry no more. You have a cheap and readily available natural pesticide in your house-coffee grounds.

Whether it is slugs, snails or ants, they cannot resist coffee grounds. Its effectiveness as pesticides is attributed to its abrasive texture, acidity and the caffeine. So when you notice a plant in your garden infested with pests you know what to do.


If you keep cats and dogs then you need to exercise precaution when using coffee grounds. They may venture into the garden and take in some coffee grounds. When taken in big amounts, it becomes poisonous and may affect the health of your lovely pets.

3. Good food for worms.

Are you into vermiculture? Then coffee grounds could be the best food deal. Worms love coffee grounds. Feel free to add coffee grounds in the worm bin or the compost pile containing the worms or wherever you rear the worms.

However, note that coffee grounds do not contain all the nutrients needed by the worms. For a balanced diet incorporate other foods like fruit scraps, newspapers, vegetable scraps, and leaves.  


Coffee is acidic, so applying too much of it could raise the acidity to levels that will be uncomfortable for the worms. Strictly control the feeding. A cup per week will be sufficient for a small bin.

4. To raise the acid levels of the soils.

Some garden plants like gardenias, camellias, citrus fruits, blueberry, vireyas and cranberries do well in acidic soils. Consider using coffee grounds to raise acidity to the desired levels. With a pH of 5.1, coffee grounds do the job so well.

In case the soil becomes too acidic do not despair. Just add lime to the soil. The alkaline lime will neutralize the acidity and balance the pH.

5. An effective anti-fungal agent.

Garden plants like tomatoes and pepper are susceptible to fungal infection. Use coffee grounds on such plants. Coffee grounds have been observed to prevent fungi development, applying it limits the growth and spread of fungi. Pythium, Fusarium and Sclerotinia are some of the fungi species destroyed by coffee grounds.