If you have plants that prefer acidic soil, like blueberries, camellias, and gardenias, sprinkle the coffee grounds near the roots of the plants at the start of the growing season to raise the soil’s acidity. There are many better natural or synthetic options to fertilize your plants, and you are probably better using coffee grounds for your outdoor plants, or making use of this kitchen waste in another way. Let’s have a look at the Houseplants That Love Coffee. Jade plants love coffee as they like nitrogen. Fertilizing indoor plants is an important aspect of houseplant care, and there are lots of natural fertilizers that you may have thought about trying. If you do use coffee grounds on your indoor plants, either directly or as part of a compost, you can reduce the risk of overwatering by altering the composition of the soil that you use. The bottom line is coffee for houseplants might not be the ideal option, but if you use it efficiently, it can be beneficial for your plants. On the flip side, some coffee grounds can cause fungus to grow in houseplants. Similarly, coffee grounds might attract pests and other insects as well. Coffee grounds are about 2 percent nitrogen by volume, nitrogen being an important component for growing plants. Can Deter Slugs and Snails from Plants There have been a number of small scale studies that have shown that coffee grounds added directly to the soil can actually inhibit plant growth, particularly in seedlings and young plants. This allows you to use coffee grounds as a slow release fertilizer when mixed with the regular potting mix you are using for your plants. Just keep it in bright light and the plant will thrive. Coffee grounds contain a large amount of nitrogen compared to phosphorus and potassium. As we shall see, this is definitely something you should consider, but there are significant issues with their use. You have entered an incorrect email address! Apart from that, you can always side-dress your plants with used coffee grounds. The most common mistake people make is to assume coffee grounds are a ready-to-go feed for their houseplants straight from the coffee pot. Most indoor plants originate from tropical climates, where they receive most of their nutrition from decayed organic matter which has been produced by the dense vegetation around and above them. Benefits of coffee grounds on house plants. So, coffee grounds as compost is always better. Before you pour, dilute it with the same amount of water and make sure to use only black coffee or tea. Once again, this highlights why adding coffee grounds to the surface of the soil is not recommended. Just make sure to limit your coffee quantities, as too much caffeine can stunt plant growth and increase the risk of fungal diseases. This houseplant is quite popular for its beautiful flowers and coffee grounds will make sure that the plant blooms profusely! You can aid in dense growth by watering the cyclamen frequently in the flowering season with water and coffee solution. Adding coffee grounds to your compost bin is also recommended. Can you use coffee grounds to fertilize indoor plants?- Coffee grounds can be used to fertilize indoor plants, but you are best to make compost with them first. Add all your used coffee grounds to your compost pile and wait until your compost is ready to be used. Fresh coffee grounds (like the ones you can get from a coarse grind) are acidic, but used coffee grounds are neutral. Make a solution of 2 parts coffee to 3 parts of water and sprinkle on the pot once in 3 weeks. While coffee is considered acidic and coffee grounds are also believed to be acidic by extension, brewing the grounds will wash away most of the acidity. It is a huge fan of nitrogen and acid so you can use a solution of coffee and water for best growth. Yes. Grow HUGE plants with coffee grounds! Coffee grounds are exceptionally good at retaining moisture. Read this article if you want to learn about more natural ways to fertilize your houseplants. This beautiful houseplant offers a wide range of varieties to grow indoors. Save my name, email, and website in this browser for the next time I comment. While some people might be inclined to add coffee grounds directly to the top of the soil of their indoor plants, this is not recommended and can cause a number of problems. You can even water your plants using coffee. Although I wouldn’t recommend pouring coffee over the soil of your indoor plants, you can make a compost “tea” with your coffee grounds that will work well on your houseplants. Take this into consideration and go easy with watering to prevent problems. Many of us will have dumped the cold remains of a forgotten coffee in a plant pot at some point, and then perhaps wondered if it was the wrong thing to do! It helps them to stay dark in color and encourage thick stem growth. “Fresh coffee grounds are acidic. smartgardenguide.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com and other Amazon stores worldwide. It can lead to unnecessary moisture retention, impair growth of the plants, and even fungal overgrowth. Can You Use Coffee Grounds To Fertilize Indoor Plants? But this is only true for unwashed coffee grounds. Coffee grounds are a good source of nitrogen in your compost pile or when added directly to the soil in the garden. Composting grounds introduces microorganisms that break down and release the nitrogen as it raises the temperature of the pile and aids in killing weed seeds and pathogens. Pour the mixture close to the base of the plants you want to fertilize. 12 Stunning Calathea Varieties You Will Love. Using coffee grounds in your potting mix does come with a few problems which I will talk about in the next section. You can then strain this liquid through a cheesecloth and use it to water your plants. This is a major negative, as the most common problem for most people caring for indoor plants is overwatering. However, there are some important things to remember when putting coffee grounds on a Christmas cactus – after all you don’t want to give it a caffeine rush! What Do Coffee Grounds Do? Using coffee grounds to make compost is by far the best option, if you want to use coffee grounds to fertilize indoor plants. Using coffee grounds to make compost is by far the best option, if you want to use coffee grounds to fertilize indoor plants. Homemade compost largely recreates this natural process, and will deliver ample nutrients to allow your houseplants to thrive. Coffee grounds ward off slugs! For most people, I would recommend using coffee grounds for your outdoor garden and using alternative options to fertilize your houseplants. This low-maintenance plant enjoys an occasional coffee treat. The short answer: unwashed coffee grounds will lower the pH level of your garden (raise the acidity), which is great for plants that like acidic soil, but hurts plants that prefer less acidic soil. This not only provides a good source of nutrients, but adds beneficial bacteria, which can improve the health of the soil and your plants. However, using the coffee ground for houseplants can cause more harm than benefits. In my experience, this is not an issue. Ideally, using coffee grounds compost, or adding coffee grounds when repotting will reduce this risk. This rich organic material is good for your plants due to its high nitrogen content, micronutrients, and high-water retention. Add coffee grounds in the potting mix or simply sprinkle a solution of coffee and water for lush growth. They’ll be able to take advantage of the leftover nitrogen in the coffee grounds. Add a maximum of one inch of compost to the pot to prevent this. The absolute best way to use coffee grounds on your houseplants is to compost! How to Use Coffee for Houseplants Coffee grounds are a good source of nitrogen, encourage the growth of the beneficial microorganisms in the soil, and help plants that prefer acidic growing medium. Peace lilies in particular do best with a mix of nitrogen, phosphorous, and potassium. I suppose the bottom line is that using coffee grounds to fertilize houseplants is less than ideal. Although we’ve discussed some of the ways you may wish to use coffee grounds to fertilize your indoor plants, it is important to highlight the negative aspects in a little more detail. Wait to water until your plants' soil is dry to the touch, and use your diluted leftovers only about once a week. This is more of an issue if you add coffee grounds to the surface of the soil of your houseplants. You may have heard that coffee grounds will alter the pH level of your garden. This attractive houseplant flowers from December till April. Coffee Grounds Can Actually Inhibit The Growth Of Some Plants There have been a number of small scale studies that have shown that coffee grounds added directly to the soil can actually inhibit plant growth, particularly in seedlings and young plants. But it doesn't work that way. This beautiful houseplant is an excellent choice to bring a pop of color indoors. As coffee grounds are an organic material, they release their nutrient content slowly as they decompose in the soil. You can use it in the following ways: After you have brewed the coffee in a pot, use the leftover to water the plants. If added in fairly large amounts, they can raise the acidity level of the soil for acid-lovers such as blueberries, azaleas, and rhododendrons. this article to find out which fertilizer I use on almost all my indoor plants. By adding more coarse sand or perlite to the potting mix, this will increase drainage, allowing the soil to dry out faster after watering, reducing the risk of overwatering and root rot. Coffee grounds are a very useful source of nutrients that indoor plants can use effectively, and a very cost effective fertilizer. Sprinkle used coffee grounds around plants as a slow-release fertiliser Using Coffee Grounds as Fertilizer. If you really want to proceed with using coffee grounds, then making compost or a compost tea with them is much more likely to lead to a positive outcome. Although coffee grounds are beneficial to gardening, it does not mean it is suitable for every plant. Some even suggest using coffee as a mulch. Take one part coffee to three parts of water to promote growth. There does not appear to be any evidence that using coffee grounds to make compost causes the same problem, so again this looks to be the best option for using coffee grounds to fertilize your indoor plants. Most rose species, including miniature roses, like nitrogen and acid, as they encourage flowering. The high nitrogen content of coffee grounds (NPK 2.1-0.3-0.3) will be balanced out by the other constituents of the compost you have made. Put coffee grounds in your compost for healthy soil and earthworms! Indoor plants should not use the coffee ground as fertilizer. Many people feel that coffee grounds lower the pH (or raise the acid level) of soil, which is good for acid loving plants. People have been using coffee grounds in their gardens for years with reasonable success so it’s only natural for people to experiment with using coffee grounds to fertilize indoor plants. Half a cup of coffee grounds mixed in a gallon of water makes a great liquid fertilizer for your plants, whether they grow in the garden or in pots. We are advised to put them in the garden for perky plants and bright blue azaleas. Fresh Coffee Grounds for Acid-Loving Plants While used coffee grounds are only slightly acidic, fresh (unbrewed) coffee grounds have more acid. Most effective than just throwing the grounds on … You can also add coffee grounds into the potting soil while transplanting and watch the plant thrive in long term. Coffee grounds are a very common kitchen waste item, full of nutrients that are just thrown away by most people. Yes! However, there are three great options for how your indoor plants can benefit from coffee grounds as a fertilizer. If putting coffee grounds in the compost makes the compost richer in nitrogen, it seems that putting those grounds right in your garden will add nitrogen too. Rinsing your used coffee grounds can bring them to a safe pH level, which won’t affect the soil. One or two slugs may turn away from the coffee barrier, but there are bound to be pests that decide it’s a good idea to jump the makeshift fence. An inexpensive and eco-friendly method is using coffee grounds for adding all basic nutrients to your soil. This problem can be reduced by ensuring the coffee grounds are worked well into the soil. They apparently act like very fine perlite – loosening the soil and retaining water. Use half a cup of black coffee per plant, once in 2-3 weeks. Fresh coffee grounds are ground-up coffee beans that haven’t yet been used to make coffee. Directly applying coffee grounds to indoor plant soil can cause excessive moisture retention, fungal overgrowth and even impair plant growth. Both brewed coffee and tea are slightly acidic and over time may change the soil chemistry in your pots too much. Alternatively, see this article to find out which fertilizer I use on almost all my indoor plants. This is thought to be due to the caffeine content of coffee grounds. Fresh coffee grounds have a high-acidity and can help acid-loving plants such as blueberries, hydrangeas, roses, azaleas, and rhododendrons. The coffee grounds can also be used as an organic matter. Coffee grounds contain reasonable levels of nitrogen, which will break down and create a compost that is high in essential nutrients. 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