Does Basil Like Coffee Grounds?

It’s not like me, but I’m not able to be without my cup of coffee in the morning.

However, if I were to feed me the exact amount of basil as I drink I don’t think it would be very impressive.

Basil is certainly a good candidate for coffee grounds, but the issue is how much to offer it.

As with the rest of the world, basil is look like coffee. The coffee grounds supply the basil with nutrients that are beneficial and repels pests, wards off certain fungal diseases and improves water retention. This is just the top of the iceberg.

Continue reading to learn more about how to use coffee grounds to make basil.

Are Coffee Grounds Good for Basil?

Coffee grounds are great for basil. It’s beneficial in a variety of ways, but you should use it in moderation.

If you use it improperly or excessively can result in negative, unsatisfactory consequences.

Basil is a fairly easy plant to grow It requires only an environment that is warm and a fertile soil with organic matter well-lit and plenty of water.

Potting soils may not contain all the essential nutrients that plants require to grow; however, when they do the plants take in these nutrients over time.

This is the reason plants require fertilizer, and grounds from coffee (an natural product) can serve this function.

Tips: If you believe the coffee grounds are too acidic or harsh for your soil, when you make the coffee The acidity will be eliminated. The only thing left are nutrients that aid your plant’s growth.

How Often Should I Put Coffee Grounds on My Basil?

Utilize the “once per week’ method first. It is important to watch your basil and observe how it reacts to coffee grounds.

If you observe any decrease you notice a decline, increase the amount of coffee grounds, and also the frequency at which they are added to your soil.

How Much Coffee Should You Add to Your Basil?

As with everything you do, it’s best to begin slowly. Begin by taking a small tablespoon of ground once every week.

If your basil is showing positive growth, you are able to keep this process going. If not, then it is recommended to alter the quantity.

The soil you mix into your basil should make up about 5 percent of the total volume of soil.

basil seedlings with soil

Best Ways to Use Coffee Grounds on Basil

Composting with Coffee Grounds

Composting is the process of decomposing natural waste, that is. recycling organic material, using the process of anaerobic digestion.

It is the result of a black and healthy material which you can use to fertilize plants.

The addition of compost to the soil can help to retain more water and nutrients, thus increasing overall wellness.

In the case of composting there are two kinds of compost: Brown material (high in carbon) and green material (high in nitrogen).

The high nitrogen content of coffee ground makes it green although it is brown in hue.

When you are making the compost heap, you must ensure to have the right ratio of 4:1 green to brown material.

If you pile on excessive amounts of green material, your compost pile will start to smell If you have excessive brown material it won’t be able to heat up. It’s easy to remember, isn’t it?

Green materials include:

  • Eggshells.
  • Animal Manure (cow, sheep, chicken, horse, etc.)
  • Fruit and Vegetable Scraps.
  • Grass Clippings.
  • Coffee Grounds and Tea Bags.
  • Trimmings of the plants.

Materials in the brown category include:

  • Paper (paper plates coffee filters, writing paper newspaper)
  • Sawdust.
  • Straw.
  • Bark, twigs, branches.
  • Corn Stalks.

Coffee Grounds as Organic Fertilizer

Sprinkle grounds of coffee onto the basil plants’ soil, and then incorporate to incorporate it in the garden.

This is a cheap, and environmental-friendly way to give the soil a nutrient boost.

Keep in mind that since the coffee grounds act as a fertilizer that releases slowly, they will not immediately release nitrogen into the soil.

Coffee grounds are perfect to fertilize basil plants since they provide these nutrients

  • Nitrogen (2.28%)
  • Phosphorous (0.06%)
  • Potassium (0.6%)

The coffee grounds also contain micronutrients like calcium, boron copper, iron, zinc, magnesium, and iron. (Source: University of Wyoming)

Worms also like grounds of coffee because it’s easy for them to drink and aids in the digestion of food items.

Worms, particularly earthworms can be extremely useful in helping plants flourish.

They aid in increasing the flow of air and water in soil and reduce the organic material that plant will utilize.

Mixing Coffee Grounds with Mulch

Mix the coffee grounds you brewed with other organic materials prior to making mulch. It is best to mix it with compost.

The coffee grounds are composed of extremely fine particles, and they are susceptible to locking together.

Therefore, using them as a mulches will form an impervious barrier to water, and your plant will suffer the effects of dehydration.

After you have made an efficient mulch you can spread it over the soil layer that is on top within the basil plant.

Two inches or less is more than enough to create a solid, thick layer.

Add Grounds from Coffee Grounds to the Mix of Potting When Repotting

The coffee grounds, as organic matter will slowly release nutrients as they decompose.

This means you can make use of this product as the SRF (slow-release fertilizer) by mixing it with regular pot soil.

This could provide a long-lasting supply of nutrients to your basil for as long as six months.

Coffee Grounds as Compost Tea

Use a sock to stuff it with grounds of coffee and let it sit in a 5 gallon bucket for a couple of days.

Be sure to ensure that the water you use is not chlorinated Use the rainwater option or allow tap water to sit for 24 hours prior to the time you need it.

When the tea is ready it can be used to fertilize your basil or other plants.

You can also put the contents of the spray bottle and then use it to lightly spray the stems and leaves from your garden.

Using ‘Drip Feeding’ Method

Drip feeding, (or drip irrigation), is a method of watering that lets water drip slowly to the roots of plants.

It reduces the amount of evaporation by directly providing water directly into the roots zone. It is typically utilized for large plants and fields that require lots of water.

You can build your own DIY drip feeder using the coffee grounds compost tea in place of water.

Tips: Create your own DIY drip irrigation method for basil by following the steps of this study at the university.

Coffee Grounds and Seedlings

It’s not like you would give a baby the option of drinking coffee… Would you? Although coffee grounds are ideal for adult plants but adding them to babies’ plants is a huge no-no.

Do not use coffee grounds on seedlings and seeds as it could hinder the germination process and slow growth.

Benefits of Using Coffee Grounds

The benefits of coffee grounds

  • It’s a great food source for nitrogen (C/N ratio of 20-1).
  • It acts as a natural repellent to pests (snails and slugs especially dislike it).
  • Enhances the soil’s structure as well as tilth.
  • The pH is close to the neutral range (6.5 to 6.8 pH).
  • Grounds don’t “go bad” over time.
  • It contains around 22% nitrogen in volume.
  • It can be used as a fertilizer, compost and mulch.
  • Possibility to absorb heavy metals from soil.

Prevents Diseases

The coffee grounds are antimicrobial, which means they kill microorganisms (bacteria and viruses, fungi, as well as protozoans).

Incorporating it into your compost pile will aid in stopping certain fungal diseases from forming. It can also be harmful to bacteria such as E.coli.

Deters Pests

There are certain compounds in coffee, such as diterpenes and caffeine, which can be harmful to insects. These chemicals work to repel mosquitoes, beetles and fruit flies.

Other pests that eat plants, such as snails and slugs don’t like crawling around on the ground because they stick on their body.

Are you having problems with ants crawling across the compost heap? Sprinkle the compost all over.

Ground coffee grounds are very effective in dispelling them since they aren’t a fan of the strong scent the coffee grounds release.

Improves Soil Quality

As we mentioned earlier that coffee grounds are an excellent source of nitrogen, and including them in your soil will definitely improve the tilth of your soil.

Water Retention Capacity

The SCG (Spent coffee grounds) can boost how much water that soil holds onto. The fine particles function as sponges that store water in soil.

Improves Drainage Capacity

The coffee grounds are an organic substance when added to soil, can enhance the health of the soil by enhancing aeration, water retention, and drainage.

Keeps Pets Away

I am a huge animal lover, and I am currently the mother of two dogs and cats Oh, but what I hate when they tamper around with the plants.

Starting from digging up them, eating the berries or drinking their water and making them their personal toilet.

Coffee grounds are an effective method to keep pets from your beloved plants.

Beware: Caffeine can be toxic to dogs and cats Be aware of the amount of coffee grounds you are using and the location you apply it. If it’s your neighborhood cat, as well as yours, don’t wish to cause harm to them.

Increases Soil Acidity

Many studies suggest that the use of coffee grounds brewed in the kitchen can increase the acidity of the soil.

A few studies suggest that the acidity that is high actually occurs within the coffee itself and not in the coffee grounds.

The coffee grounds of brewed coffee have a pH close to neutral of 6.5 to 6.8. This indicates that it is acidic or neutral.

Issues with using Coffee Grounds

Promotes Fungal Growth

The addition of coffee grounds directly onto the soil’s surface could cause it to hold excessive moisture, leading to the development of fungi and other diseases that thrive in an environment that is humid.

To ensure that this doesn’t happen it is recommended to cultivate the coffee grounds thoroughly into the soil.

Excess Moisture Retention

As I said earlier coffee grounds are great in keeping water. This could very quickly result in overwatering, which can lead to the development of root decay.

Tips: To prevent overwatering Try adding some perlite or coarse sand to the mix of potting soil. This will improve the drainage, and will let the soil dry faster.

Attracts Pests

We all know that worms like coffee, but they’re the kind of beneficial “pests” that we would like to have to be around.

Many other insects believe that your sweet, coffee-scented basil plant is the ideal spot to establish their new home.

Cockroaches, which are arguably the most harmful bugs, are also attracted by the scent of coffee.

If you observe an increase in insects crawling about your garden or in your compost pile This could be the cause.

Can Inhibit Plant Growth

The most popular reason for drinking coffee is being extremely high in amount of caffeine. This is why people depend on it to wake up each day.

Research has proven that applying coffee grounds directly to the soil could hinder plant growth.

This is particularly true for the development of seeds and seedlings. This is possibly due to the large amount of caffeine present in coffee grounds.

Caffeine may help reduce competition from weeds by slowing the growth of weeds. This raises an opportunity that coffee could be able to suppress not just the growth of weeds, but as well that of the basil.

Potential Risks to Soil

According to some reports, coffee grounds are acidic enough for soil, whereas others claim that there is no acidity present in them.

What I’ve learned is that fresh ground coffee is acidic. After you’ve brewed them, they’re not as acidic anymore, but are more neutral.

The pH level of coffee brewed is 6.5 up to 6.8.

If you are using the pH scale, 7, which is the neutral number. over 7 alkaline, while below it is alkaline.

Of course, stronger coffee will result in an elevated pH and you’d want to choose a weaker strength.

Additionally, using boiling water instead of cold water will remove more acid from grounds of coffee.

Basil likes soil with an acidic to neutral pH range.

Drinking water with Leftover Coffee

Be sure to first wash down the coffee you have left over before making use of it, and then water your basil the same way as you would do with normal tap water.

Also, use it in moderation, since doing excessively can cause more harm than good.

A Cup of Coffee Ground Compost Tea, Anyone?

That’s it you are now a household name. Basil might benefit from an espresso every now and then.

Prepare yourself to handle the issues that could arise when you use the coffee leftovers to fertilize your basil or any other plants.

Do not spread the coffee grounds over the soil. Instead incorporate it into the soil.

Finally, using coffee grounds to make compost or compost tea is much more efficient and will yield a superior outcome than making it a fertilizer.



Went from a bad gardener to a half-decent one over 10+ years. Super happy to share my tips and tricks with you :)