Coffee Roses – Do roses like coffee grounds?

Do roses like coffee grounds? This is a question that many gardeners have asked themselves at one point or another. The answer, surprisingly, is yes! This is because it provides nitrogen, helps with soil drainage and balances out the soil PH.

Coffee grounds make an excellent fertilizer for the soil around your roses. Adding coffee grinds to your rose garden has advantages, but there are some risks to consider.

Coffee grounds seem to be an ideal addition to rose plants’ soil, but before you go home with a bag of grounds from your local coffee shop, you need to take some time to learn about their correct usage.

In this article you will learn the following about putting coffee grounds into your rose soil:

  • Coffee ground considerations

  • Coffee ground misconceptions

  • What the Benefits of Using Coffee Grounds on Roses are

  • When the right time to use coffee grounds is

  • How to apply coffee grounds to roses

  • Where to purchase coffee grounds

  • Other related coffee ground questions

coffee roses snippet image

Table of Contents

Coffee ground considerations

Coffee grounds are frequently added to rose soil as a soil amendment to lower the pH and provide nutrients for roses. Coffee grounds and their components are delivered deep into the soil by earthworms, which may be partially responsible for the soil improvements seen.

Coffee grounds have a high carbon to nitrogen ratio, which means they can be used as a mulch or compost. When used as a mulch, coffee grounds help the soil retain nutrients and keep weeds at bay. When coffee grounds are added to compost, they help to speed up the decomposition process.

lower soil ph for roses

Coffee ground misconceptions

One common misconception is that coffee grounds will make the soil too acidic for roses. However, coffee grounds (when mixed with compost) have relatively low acidity and are not likely to ruin the pH of your rose soil.

Coffee grounds can be a pest deterrent (however they are not brilliant). Some gardeners believe that coffee grounds will keep aphids, snails and slugs away from their roses. While this is not always the case, coffee grounds can be used as a temporary measure to keep these pests at bay. 

If you want to find out how to get rid of greenfly on roses then make sure you read an article that we wrote that covers this!

garden pest roses

What Are the Benefits of Using Coffee Grounds on Roses?

There are many benefits of using coffee grounds for your roses. Coffee grounds can:

Adds important nutrients to the soil

Coffee grounds are rich in nitrogen, which is the primary nutrient available. In the growing season, nitrogen (as well as phosphate and potash) is the most critical nutrient for healthy roses because it stimulates new leaf, stem, and cane development.

Coffee grounds are a delightful and much-needed shot of nitrogen for new growth in the spring as well as to promote a more healthy, disease-resistant rose.

Coffee grounds are particularly high in nitrogen, yet they also include other vital minerals such as phosphorus, potassium, and copper, all of which will benefit the soil health and are beneficial to roses.

Helps to improve drainage and encourages organisms to thrive

Organic matter (like coffee grinds and leaves) mixed into the soil nurtures the environment of the soil, like earthworms and tiny microbes that eat into the organic waste so that is easily absorbed by the roses’ roots.

In other words, the organic matter is able to absorb and retain water while allowing excess water to drain easily through the soil, which is ideal because roses require soil that drains well whilst also having the ability to hold water so that their roots may draw on the surrounding moisture when they need it without causing the roots to become overwatered.

Because it has organic material, it’s the ideal compromise between retaining moisture and allowing pooling water to drain, preventing the roots from becoming saturated.

Coffee grinds are a favorite food for your local worms. This will be a massive help to roses by ensuring that the soil is aerated effectively and uniformly, which improves soil structure and drainage.

In actuality, soil that is highly infested with worms drains a lot faster than one that isn’t, owing to the tunnels they carve in the dirt, which will prevent root rot if you have compacted heavy dirt or poor drainage.

Coffee grounds are eaten by worms, which then produce worm casts (worm cast compost), concentrating the minerals and nutrients while increasing nutrient availability to your rose’s roots from the surrounding soil.

Worm casts and tunnels that they create aid in the penetration of your roses’ roots into the soil, allowing them to grow deeper.

Coffee grinds are also useful for composting since they break down quickly and may provide important fertile material which can be used as a mulch for your roses and other plants in the garden during the best seasons for growing.

It adjusts the pH of your soil to be at the right level

The ideal pH for roses is between slightly acidic to neutral, around a pH of six to seven. coffee grounds can be used to achieve this goal because they have a naturally acidifying effect on the soil.

This is beneficial since roses prefer slightly acidic soils, which helps increase their resistance to diseases, pests, and other problems.

Coffee grounds will also help reduce the chances of your roses getting root rot or other fungal diseases that often plague roses grown in alkaline soils.

coffee beans

When is the right time to use coffee grounds?

This is tremendously important since nitrogen is a major nutrient in coffee grinds. However, if you apply coffee grinds too early or late in the season, new delicate leaves will grow that are susceptible to damage in the winter (especially frost).

In April or May, add coffee grinds to the rose soil when it is just waking up from its dormancy period and the new leaves are nearly completely open. Coffee grounds shouldn’t be applied to the roses’ soil after mid-August when young growth needs time to mature and get ready for the next winter’s frost.

Any fertilizer shouldn’t be used after mid-August, as new plant growth will most certainly turn black and die out in the first freeze. If this happens, snip off the injured development as soon as possible with pruners. Because rose species are hardy plants, if you act swiftly, the rose should remain healthy.

growing roses at the right time of year

How to apply coffee grounds to roses

It is best to work the coffee grinds into the top few inches of soil around the base of the plant using a hoe, rake, or your fingers.

Make sure to avoid getting any on the rose bush itself as it may cause burns. It’s also a good idea to apply a layer of mulch over the area where you’ve added coffee grounds.

This will help keep down weeds and hold in moisture. A thick layer of organic mulch (at least two to three inches) is especially important in hot weather since it will help prevent your roses’ roots from drying out.

Organic mulches also add valuable nutrients to the soil as they decompose over time. Coffee grounds can be used fresh or dry, but they’re most effective when they’re fresh.

If you have access to a coffee shop or cafe, ask if you can take their used grounds. Many establishments are happy to get rid of them and it’s a great way to recycle.

You can also store coffee grounds in a container in the fridge for up to two weeks until you’re ready to use them.

gardens

Where to purchase coffee grounds

If you don’t have access to a coffee shop, you can purchase coffee grounds from a grocery store or online.

Just make sure that the grounds are from 100% organic coffee and haven’t been treated with chemicals.

It’s also important to get unbleached coffee grounds since the bleaching process can add harmful toxins to the soil.

While it’s generally safe to use small amounts of coffee grounds in your garden, it’s always best to err on the side of caution.

Too much of anything can be bad for your plants and too much acidity can damage delicate roots. It’s best to start with a small amount and increase gradually as needed.

purchase coffee from shop or online

Conclusion

Adding coffee grounds to your roses’ soil has a host of benefits, including helping adjust the pH level, making the soil more acidic (which is ideal for roses), and reducing the chance of root rot or fungal diseases.

Coffee grounds should be added in April or May when new leaves are appearing and stopped by mid-August so as not to harm new growth. Be sure to work them into the top few inches of soil and keep a layer of mulch over the area. You can purchase coffee grounds from a grocery store or online. Just make sure they’re organic!

rose plant

People Also Ask

Is coffee good for roses?

Coffee grounds can be a great addition to your roses and garden, but it’s important to use them correctly. Too much acidity can damage delicate roots, so it’s best to start with a small amount and increase gradually as needed. You can purchase coffee grounds from a grocery store or online. Just make sure they’re organic!

When should I apply coffee grounds to my roses?

Coffee grounds should be added in April or May when new leaves are appearing and stopped by mid-August so as not to harm new growth. Be sure to work them into the top few inches of soil and keep a layer of mulch over the area.

When should I apply coffee grounds to my roses?

Coffee grounds should be added in April or May when new leaves are appearing and stopped by mid-August so as not to harm new growth. Be sure to work them into the top few inches of soil and keep a layer of mulch over the area.

sprinkle coffee grounds

Can I pour coffee on my plants?

No, you are better to use coffee grounds instead. Pouring coffee on your plants can cause burns. It is best to work the coffee grinds into the top few inches of soil around the base of the plant using a hoe, rake, or your fingers.

Does Starbucks give away free coffee grounds?

Yes, many establishments are happy to get rid of them and it’s a great way to recycle. You can also store coffee grounds in a container in the fridge for up to two weeks until you’re ready to use them. If you don’t have access to a coffee shop, you can purchase coffee grounds online.

used coffee grounds
Share your love
Default image
Oliver Wright

I hope you enjoy reading some of the content and ideas from this site, I tend to share articles and product reviews on a daily basis, so be rest assured… you won’t run out of things to read!

Articles: 252