Are Coffee Grounds Good For Garden? Our Guide Here

Written By James
Updated May 16, 2021 by James

Are Coffee Grounds Good For Garden? Our Guide Here

Everyone knows that coffee is a great way to refresh and revitalize the body, but it is also good for plants.

Coffee grounds are rich in nitrogen, potassium, and phosphorus, the three nutrients essential for most plants to grow.

Plants love coffee grounds, but you have to know how to use them correctly.

Most coffee grounds contain a high amount of nitrogen and potassium, two major nutrients that plants need to grow, but they also contain other nutrients like phosphorous and magnesium.

Since you can't feed coffee grounds directly to your plants, you can use them as fertilizer for your plants.

You can make your own coffee grounds fertilizer by mixing coffee grounds with water and spreading the mixture on your garden.

The process is simple: grind a bunch of coffee, pour it in a container and let it sit, and then pour it over ice.

The result is a drastic reduction in acidity, a full-bodied coffee flavor, and a beverage that can be enjoyed with dairy or without.

Is coffee grounds are acidic?

Coffee grounds contain the acidity of coffee which can be harmful to plants.

But, if you use coffee grounds as compost, they will be neutralized and won't cause problems for your vegetable garden.

But, if you use coffee grounds to plant directly in the ground, the acidity will decrease the pH level in the soil, which will make it harder for plants to grow.

Coffee must be stored in airtight containers in a cool, dark space. If exposed to air, coffee grounds will dry out and become acidic.

If they compost, the same thing will happen. Many gardeners add coffee grounds to their compost piles. This is not a good idea. Coffee grounds will make your compost pile acidic.

You should not put it in containers that you are growing vegetables in as coffee grounds are acidic and can damage the plant.

The coffee grounds are best used in potted plants. You can add coffee grounds to the compost pile, however they should not be the only composting material that you are using.

Coffee grounds are acidic, and you can use them to keep slugs and snails away from your plants.

Can you use coffee grounds as fertilizer?

The coffee grounds are useful as a fertilizer, compost activator, and soil conditioner. Grounds are one of the best additions you can make to your compost pile.

Grounds add nitrogen and tiny air pockets that make your compost decompose faster. Just throw grounds on top of your compost pile to keep it loose and aerated.

It's a great way to reduce waste and add valuable nutrients to your soil.

But you need to be careful when you do it because coffee grounds contain high levels of nitrogen, they can actually damage your plants if you add too much.

Coffee grounds can also be used as mulch and are often used as compost. If you like to use organic fertilizers in your garden, you'll love the rich benefits coffee grounds can offer your plants.

Can you use coffee Grounds as a Natural Pesticide?

Most pesticides will kill pests. But it also kills the pests’ predators, such as birds and insects.

There are natural ways to eliminate pests for your garden by using Coffee Grounds. This is also a great alternative for those that are chemically sensitive.

Just like any compost material, coffee grounds need to be mixed into the soil to be effective.

Mixing coffee with water will kill insects due to their acidic quality, but it also acts as a mild fertilizer and can be used as a substitute for chemical fertilizers.

Here are some of the best ways to use them in your garden:

  • Before you plant anything in your garden, till the soil and work the coffee grounds from the last year into it.

This will give the grounds a chance to break down over the year and benefit your soil.

  • To get rid of slugs and snails, dig a small trench in your garden. Then fill the trench with coffee grounds. Cover the trench with a board or a rock so the pests can’t crawl over it.
  • Coffee grounds are perhaps best known as a compost enhancer, they are also an ideal pesticide for your garden and are safe for you, your kids, and your pets.
  • Coffee grounds are known to deter ants because the caffeine in the grounds repels them. The next time you see a few ants in your kitchen, sprinkle a little coffee grounds near or around the ant trail, and that should do the trick.

Reasons you should never use ground coffee in your garden

Of all the ways to feed plants, coffee grounds are one of the cheapest and most accessible.

Coffee grounds should provide a nutrient boost to plants which is why they’re often used as a fertilizer.

But there are many reasons to avoid adding coffee grounds to your garden. But in the garden, coffee grounds have a number of drawbacks. 

They aren't the right soil acidity, and they're not good for your plants, either. In fact, there are a number of reasons that you should never use coffee grounds in your garden.

Coffee grounds are acidic, so they should be applied in small quantities. The problem with coffee grounds in the garden  is that they are loaded with caffeine.

Which is harmful to plants in high doses.  Coffee grounds are also acidic in nature, which could be harmful to plants if used in large amounts

Benefits of coffee ground in the garden

  • It acts as an organic fertilizer, a good source of nitrogen.
  • Coffee grounds are good for your flower beds and house plants.
  • Coffee grounds will help deter slugs, snails, and flea beetles.
  • Absorbs excess moisture.
  • Prevents plant disease and fungus from attacking your plants.
  • Repels slugs and snails.
  • Fertilizes your garden.
  • Very helpful in your compost pile or used in the garden.
  • Coffee grounds are a good source of phosphorus.
  • Beans contain a lot of caffeine, which is a natural pesticide and insect repellant.
  • The grounds can also be added to the soil to help the soil retain moisture and to help the plants grow stronger.
  • The grounds also help to retain water, making plants less likely to wilt during times of drought.

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My father, and his father before him, and his father; for the past 3 generations, my family have always been into gardening. The green fingers is a gift passed down to me and I thoroughly enjoy it! I also have worked in the manufacturing department for Bosch and DeWalt so I like to think I know a thing or two about tools and such!
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