Can Coffee Grounds hurt Plants (can you use coffee grounds as fertilizer for plants+ more information)?

Coffee grounds have played a significant role in increasing nutrient levels in soils and helping in plants’ growth, but most of its users wonder, can coffee grounds hurt plants?

No, coffee grounds do not hurt plants unless administered in large quantities and on younger plants. Coffee grounds are an excellent fertilizer that helps enrich the soil and speed up your plants’ growth. They also have nutrients such as nitrogen, phosphorous, and potassium which are helpful in plants as they grow.

I have used coffee grounds as a fertilizer for my plants for as long as I can remember, and it has worked wonders for me, more than I had imagined. The only precaution I was made to understand is that it should be sprinkled in limited amounts because coffee grounds has very rich nutrients to avoid scenarios where the nutrients are in excess in the soil and might cause inconveniences. This post will look at the best ways to use coffee grounds in plants, so stick around.

Can I use coffee grounds as fertilizer for plants?

Yes, you can use coffee grounds as fertilizer for plants. Plants need both the macro and micronutrients to nourish themselves to maturity. The soil where the plant grows might offer only some of the necessary nutrients. Coffee grounds can be sprinkled in limited amounts on the soil to boost the nutrients.

Coffee grounds are rich in several nutrients. The significant nutrients include nitrogen and calcium, while the micronutrients present in coffee grounds include iron, potassium, magnesium, chromium, and phosphorus. Nitrogen is crucial in photosynthesis, while potassium and phosphorus are known to be yield improvers.

Do coffee grounds help plants grow faster?

Yes, coffee grounds help plants grow faster since they contain major and minor nutrients, which help enrich the soil. This will, in turn, help the plants in growing faster. Coffee grounds have also been proven to be good absorbers of heavy metals found in soil.

These heavy metals usually stunt the growth of plants; thus, coffee grounds can help expel this unwanted menace, allowing the plants to flourish and blossom well. Coffee grounds are also an attraction site for worms. These worms play a crucial role in the garden, including soil aeration.

What plants can I put coffee grounds on?

Can Coffee Grounds hurt Plants

Plants mostly thrive in soils with their ideal Ph. Depending on the soil’s acidity or alkalinity. The plants will either nourish and reproduce or stunt and finally die. Coffee grounds are acidic and will therefore make the soil more acidic.

Therefore, plants that thrive in acidity will perform even better when coffee grounds are added to them. They include cucumbers, beans, wild strawberries, cabbages, blueberries, carrots, cranberries, lilies, parsley, potatoes, pepper, radishes, and roses. These plants have been observed to thrive even more when fertilized with coffee grounds.

Can too many coffee grounds hurt plants?

Yes, too many coffee grounds can hurt plants. First, the grounds might lead to an overload of nitrogen in the soil that could stunt the growth of the plants. Secondly, the delicate nature of the grounds makes them too compact to allow water to get to the roots of the plants. The more grounds you put, the closer they become. This might aid in killing the plants through dehydration. Finally, the caffeine present in the grounds could play a role in inhibiting the process of germination and root growth.

Can you put coffee grounds on potted plants?

Yes, you can put coffee grounds on potted plants. By composting, you can mix the coffee grounds in the soil before placing the mixture in the pots. The high nitrogen and micronutrients in coffee grounds will boost the nutrients and aid in water retention in the soil.

Which plants do not like used coffee grounds?

Plants that thrive mainly in alkaline conditions do not like used coffee grounds utilized in their environment. These plants include rosemary, clovers, orchids, sago palm, alfalfa, and lavender. When coffee grounds are added to these plants, you risk experiencing stunted growth and, eventually, death of the plants. It is, therefore, advisable that you use alternative fertilizers for the coffee grounds.

How often should I put coffee grounds on my plants?

To prevent over-acidification of soil, you are advised to add a maximum of a cup of ground coffee to your compost. One should do this only once a week. This will also aid in attracting good garden worms.

How many coffee grounds can you put in plants?

You can calculate this by asking yourself whether you apply them directly to the plants or use them to make compost manure. If you apply directly, combine one part of the coffee grounds with three leaves. You can then sprinkle them on the plants in reasonable portions. If you intend to add the coffee grounds to compost, ensure they only take about 10 to 20 percent of the total volume of your compost.


It is only fair that we conclude that coffee grounds can be used as a fertilizer and works well with adult plants. However, when it comes to young plants, the coffee grounds’ nutrients are too much for them and may end up causing stunted growth. It is also advisable to use fewer coffee grounds only once a week to avoid acidification.


Can you put coffee grounds on young plants?

Putting coffee grounds on young plants is not advisable due to the caffeine and acidic content available. This caffeine can lead to stunted growth and eventual death of the plants.

Can you put coffee grounds on adult plants?

Yes, you can put coffee grounds on adult plants. The nutrients found in the coffee grounds might help enrich the plants.

Do coffee grounds help revive withering plants?

Yes, coffee grounds have been known to help revive some plants due to their high amount of nitrogen. The nutrients it possesses also play a significant role in reviving plants. However, some plants have died due to the addition of coffee grounds. This has been linked to the caffeine present in coffee grounds.

Can you mix coffee grounds with potting soil for plants?

Yes, you can mix coffee grounds with potting soil for plants. The grounds will improve the nutrients in the soil and the nitrogen content necessary for photosynthesis.

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