I have been collecting coffee bean grounds for the last week and want to know if I can just dump them around the soil of my potted azaleas. If soil is already at the lowest end of the acidity range, the use of coffee grounds is unnecessary. Plan the perfect garden with our interactive tool →, Image by Flickr.com, courtesy of Margaret Anne Clarke, Image by Flickr.com, courtesy of Sharat Ganapati, Image by Flickr.com, courtesy of Klaus Post. She has written radio advertisement copy, research papers, SEO articles, magazine articles for "BIKE," "USA Today" and "Dirt Rag," newspaper articles for "Florida Today" and short stories published in "Glimmer Train" and "Lullwater Review," among others. Yes, coffee grounds are great for acid-loving plants such as azaleas. Because azaleas have shallow roots, they only need watering during periods of drought or hot temperatures. (Give 'em a page in Us Weekly because, plants, they're just like us!) However, the roasting process removes almost all traces of chemicals. The great beauty provided by these plants requires a similarly high amount of dedication and care. Published on Sep 30, 2015. Hydrangeas, azaleas and blueberries will love it. The rhody bloomed well that year, but the azaleas didn't bloom and one of them looked like it was on the brink of dying. I always knew there had to be something to do with them, so I started saving them a few months ago. Azaleas need a more acidic soil. However, soil pH has a tendency to change because cultural conditions change daily. Although azaleas prefer acid-forming fertilizers, such as 15-5-15, blindly applying fertilizer to unchecked soil may result in disaster. You can if you want, but I doubt it'll be of much value to your azaleas. The primary reason behind this is the presence of nitrogen in coffee, which makes up about 2% of its entire composition. Coffee grounds and gardening go together naturally. You can mix the used coffee grounds with water to the rose bushes. If planted in direct sun, make sure the azalea is only exposed for four to six hours. Because azaleas thrive in soil mulched with organic content, such as compost, employing the use of coffee-laden mulch is a worthwhile venture. According to the EPA, coffee grounds contain a large amount of nitrogen, a nutrient that lawns and gardens love, although it does take a while for the coffee grounds to break down and release that nitrogen.. When soil pH rises and become too alkaline, azaleas cannot absorb adequate iron and experience chlorosis, or yellowing of plant tissue due to poor nutrient intake. Are used coffee grounds good for azaleas? Feb 1, 2016 - #EarthDay Do you save your old coffee grounds? Copyright Leaf Group Ltd. // Leaf Group Lifestyle. However, if pH has risen, the grounds help decrease that number. There are over 10,000 hybridized types of azaleas. (As in the classic twenty-foot high tomato plant that produces two tomatoes.) © Copyright 2020 Hearst Communications, Inc. You can also rub the coffee grounds on the rose bushes and then scatter it in the soil. There is speculation that the residual caffeine content in the coffee grounds are perhaps toxic to slugs and therefore they are reluctant to move over the grounds. Coffee grounds are highly acidic, so spread them generously over the flower beds of acid loving plants, such as azaleas, rhododendrons, and Hydrangeas, for amazing blooms! But those warnings ignore one big problem with spent coffee grounds: They're full of caffeine. A few varieties, however, do well in sun. Purdue University Extension: Grounds for Gardening. - Seaweed or straw: five inches. I've known a person or two who swears by mixing (relatively small amounts) of coffee grounds directly into the soil around azaleas. When we first started doing this show, we warned people to only spread coffee grounds around acid-loving plants, like azaleas, rhododendrons and blueberries, because the grounds were bound to be acidic; and not to overdo it on those and other flowering plants, as the grounds were certainly high in Nitrogen, which makes plants grow big, but can inhibit the numbers of flowers and fruits. Not only did… You can use coffee grounds directly in the garden, but as with anything, moderation is key. Coffee grounds have a soil pH of 6.2, which is slightly acid, making it a perfect choice for azaleas. Species are plants that are interbred and isolated from other populations. It's often stated that coffee grounds are acidic, and therefore good for acid loving plants like hydrangea and azalea. There has been concern over the specific process used in decaffeinating the beans. Blend your grounds with dead grass clippings and brown leaves to balance out the acidity, and spread the mixture around your plants for a beneficial boost of potassium, nitrogen, calcium, iron, magnesium, and more. Coffee Grounds as a Soil Additive. The nutrients contained in both caffeinated and decaffeinated coffee beans are alike, so it doesn't matter which type of grounds you use on your azaleas. Coffee grounds, as far as waste food goes, is already pretty far broken down … Coffee grounds provide a natural means of maintaining the low pH levels azaleas prefer. Azaleas grow best in moist soil with good drainage. Azaleas grow best in moist soil with good drainage. So consider your options before running to the garden supply store - often the simplest modes of care offer effective results. Azaleas are an acid-loving plant. Azalea shrubs grace the home landscape with a bountiful bloom of spectacular colors, such as pinks, white and reds. Coffee grounds are especially good for flowers like azaleas, hydrangeas, rhododendrons, camellias, and roses that thrive in acidic soil. So, instead of helping the thriving microbiota of your compost, tossing those coffee grounds in could actually kill off helpful microbes. Not only did… Mulch conserves moisture and deters weed growth. In most cases, the grounds are too acidic to be used directly on soil, even for acid-loving plants like blueberries, azaleas and hollies. How to Replace Magnesium in Tomato Plants, How to Grow Evergreen Girard's Rose Azaleas, Clemson Cooperative Extension: Azalea Care, University of Florida IFAS Extension: Azaleas Need Care. Gardeners should apply a 2- to 3-inch layer of compost onto the soil surrounding the azalea plant without pressing it against stems. Using coffee grounds as a stand-alone mulch can create a type of water repellent barrier over time. Hybrids are crosses between other species or hybrids. In addition, coffee grounds contain nutrients and are a good soil enhancer. And if your soil is already high in nitrogen, the extra boost from coffee grounds could stunt the growth of fruits and flowers. The Swiss water method is absolutely pure, whereas the cheaper direct method uses chemical solvents. Hydrangeas If your Growing Hydrangeas that the bloom color is affected by soil Ph, sprinkle coffee grounds underneath the shrub and you'll enjoy the most dazzling blue blooms you've ever imagined. This way the coffee grounds will scatter in the soil properly and prevent any burn. Coffee Grounds for Keeping Slugs Away from Hostas. She has a master's degree in education and is a member of the National Society of Collegiate Scholars. Whether the grounds are mixed with the soil or scattered around the plants, the effect will be positive. - Needles and small twigs: four inches. You can use your old coffee grounds as mulch for plants that love acid, like roses, azaleas, rhododendrons, evergreens, camellias, and hydrangeas. Whether the grounds are mixed with the soil or scattered around the plants, the effect will be positive. Coffee grounds provide a natural means of maintaining the low pH levels azaleas prefer, particularly if alkalinity is a concern. The most efficient way to give the benefits of coffee grounds to the rose plant is to mix it with water. Azaleas native to North America are all deciduous (lose their leaves in the fall), with flower colors ranging from pink and white, to purple, yellow, red and orange. Conversely, grounds (used as mulch and compost) improve yields of soybeans and cabbage. Azaleas native to North America are all deciduous (lose their leaves in the fall), with flower colors ranging from pink and white, to purple, yellow, red and orange. For a lot of people, coffee is the go-to when they need a bit of a pick-me-up, but it can actually make some plants perk up, too. Coffee grounds that have already gone through the brewing process are considered moderately to highly acidic. Adding this organic material to the soil will also help improve drainage, water retention and aeration in the soil. If you don't drink coffee, many coffee shops are happy to donate their grounds. This induces the growth of mold. All Rights Reserved. Azaleas thrive in soil with a pH from 4.5 to 6.0. However, as coffee grounds decompose in the soil their acidity neutralizes...so the soil acidifying effects are minimal and short-lived. Coffee grounds inhibit the growth of some plants, including geranium, asparagus fern, Chinese mustard and Italian ryegrass. Whether you are composting with coffee grounds or using used coffee grounds around the yard, you will find that coffee can give your garden as much of a pick me up as it does for you. If you are planting azaleas, place coffee grounds in the hole before inserting the plant. Coffee grounds act as a mulch and soil improver. With ten thousand hybrids in North America, choices of color, height, bloom frequency and sun tolerance are endless. I always knew there had to be something to do with them, so I started saving them a few months ago. - Coffee grounds: one-half inch. Learn which plants thrive in your Hardiness Zone with our new interactive map! @Danger14 - you mean making a sort of coffee grounds tea. Lisa Larsen has been a professional writer for over 18 years. Pruning azaleas should be done after they bloom. – Bamboo Feb 9 '15 at 13:19 And you've still got the grounds to dispose of - put 'em on the compost heap if you've got one. If added in fairly large amounts, they can raise the acidity level of the soil for acid-lovers such as blueberries, azaleas, and rhododendrons. In addition, coffee grounds contain nutrients and are a good soil enhancer. Coffee grounds are also very high in nitrogen; making them an iffy amendment for flowering plants, as too much nitrogen will make plants grow abnormally large, but inhibit the number of blooms. For this reason, they can be employed as an excellent natural compost , especially for plants that love acidic soils, such as azaleas, hydrangeas, rhododendrons and camellias. Coffee Grounds & Gardening Azalea bushes, roses, rhododendrons, evergreens, hydrangeas and camellias love coffee grounds for the natural acidity and nutrients they add to the soil. It would appear that coffee grounds are not so great for earthworms after all. In addition, coffee grounds may help suppress fungal plant diseases, according to the Washington State University Puyallup Research & Extension. I always knew there had to be something to do with them, so I started saving them a few months ago. Coffee grounds, in fact, are rich in nutrients such as calcium, nitrogen, potassium and magnesium, essential for fertilisation. Tarah Damask's writing career began in 2003 and includes experience as a fashion writer/editor for Neiman Marcus, short fiction publications in "North Texas Review," a self-published novel, band biographies, charter school curriculum and articles for various websites. Trending Relocate To One of Theses 5 Best Neighborhoods in Scottsdale National Coffee Day is here and our minds are on our favorite cup of joe - and how we can use it to help our plants, too. Moderate temperatures are required and most varieties need nearly full shade. Coffee grounds can be useful for the growth of several plants besides roses. If so, how … They need soil that is acidic in order to thrive and produce brilliant blooms. If you’re a fan of acid-loving plants like roses, azaleas, rhododendrons, and even blueberries, then incorporating coffee grounds into your fertilization routine is a smart move. Because one of those requirements is acidic soil, your daily cup of Joe might aid your azaleas' garden bed. However, soil pH has a tendency to change because cultural conditions change daily. Gardeners should retest soil periodically to determine the effectiveness of the coffee grounds. For example, evergreen azaleas (Rhododendron spp.) Mix grounds with dead grass clippings, brown leaves, or dry straw to neutralize it and prevent the waterlogged grounds from developing fungus or mold. Coffee grounds have a soil pH of 6.2, which is slightly acid, making it a perfect choice for azaleas. Azaleas need a more acidic soil. Azaleas are in the genus Rhododendron and are either species or hybrids. Used grounds can also repel snails and slugs! Washington State University Puyallup Research & Extension Center: Coffee Grounds -- Will They Perk Up Plants? - Bark mulch: three inches. You can give your acid loving plants a boost by using your old coffee grounds around their roots once a month. Coffee grounds are highly acidic, they note, so they should be reserved for acid-loving plants like azaleas and blueberries. Azaleas thrive in areas of the garden that offer partial shade, whereas extended exposure to full sun may result in damage and susceptibility to pests. Coffee grounds provide a natural means of maintaining the low pH levels Autumn Sunburst Azalea Shrubs prefer, particularly if alkalinity is a concern. Coffee grounds can be converted into solid and liquid fertilizers. Not only did… Coffee grounds are a good source of nitrogen in your compost pile or when added directly to the soil in the garden. If you are planting azaleas, place coffee grounds in the hole before inserting the plant. To avoid this, mix the coffee grounds with grass clippings, chopped up leaves or any other compost material. Soil should drain well, because waterlogged conditions encourage disease development and may result in plant drowning. Providing good general care for azaleas protects them from pests and diseases, because healthy plants have a higher capacity to avoid problems than do weak plants. However, "the Environmental Protection Agency suggests adding no more than 25 percent volume coffee grounds" to compost, notes Purdue University Extension Horticulturist B. Rosie Lerner. Apr 19, 2014 - #EarthDay Do you save your old coffee grounds? Surprisingly, an excellent source of acid is your very own coffee grounds. If you’re a coffee drinker, there’s one day each year to honor your favorite morning drink: National Coffee Day. This nitrogen is like food for plants and helps them grow. Azaleas produce some of the most stunning blooms in the plant world. And as if murdering innocent earthworms wasn’t bad enough, it appears that coffee has antibacterial properties, too. Find this Pin and more on Gardeningby Robin … Azaleas produce some of the most stunning blooms in the plant world. Coffee grounds are loaded with phosphorous, potassium, magnesium and copper. Because applying coffee grounds to the soil beneath azaleas is not yet a specific science and because the texture may be too heavy and compact for use on soil, gardeners should consider adding it to compost instead. All I can say is, at least, it doesn't seem to cause any problems. Damask holds a Master of Arts in English and creative writing from the University of North Texas. I had read that coffee grounds can rob the roots of plants from getting enough water and oxygen if they're applied to thickly, so I scooped about half the coffee grounds away from the azalea roots and watered them well. The nitrogen in coffee grounds also raises the temperature of the soil, which can kill weeds and curb pests. Without the proper level of acid in the soil, the plants will fail to thrive and bloom. Feed Your Compost Pile. Coffee grounds work best when used on plants that require an acidic soil environment to thrive, such as rose bushes, blueberries, azaleas and tomatoes. Azaleas do best when planted in all-day dappled sun or where they can receive morning sun and afternoon shade. The nutrients contained in both caffeinated and decaffeinated coffee beans are alike, so it doesn't matter which type of grounds you use on your azaleas. Gardeners should always grow plants in their preferred U.S. Department of Agriculture hardiness zones for best performance. Gardeners should first complete a soil test with a local county extension office to determine the proper amendments and fertilizers for soil. In addition, coffee grounds contain nutrients and are a good soil enhancer. develop best in USDA zones 5b through 9. Once you begin using mulches on your rhododendrons you will see the benefits of imitating nature in this rewarding garden activity. For the most accurate results, home gardeners should retest their balanced soil with an at-home soil pH kit immediately before applying amendments. Advertisement Tom Nuccio, of Nuccio’s Nursery in Altadena, camellia and azalea specialists, agreed that it can’t hurt. Coffee grounds are sometimes recommended to help repel slugs to prevent them eating hosta leaves. - Sawdust: two inches. 4. https://homeguides.sfgate.com/azalea-care-coffee-grounds-47025.html Azaleas, tomatoes, and blueberries are other examples of plants that can use some coffee. Apr 16, 2018 - #EarthDay Do you save your old coffee grounds? Did… azaleas do best when planted in direct sun, make sure azalea! Any burn stunt the growth of some plants, they note, so I saving. 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Your old coffee grounds directly in the soil, which is slightly acid, making it a perfect for... Has antibacterial properties, too t hurt example, evergreen azaleas ( spp... Appear that coffee grounds levels Autumn Sunburst azalea Shrubs grace the home landscape a. To thrive and bloom high amount of dedication and care, water retention and aeration in the genus Rhododendron are... Adding this organic material to the Washington State University Puyallup Research & Extension Center: coffee grounds also raises temperature! Cause any problems, rhododendrons, camellias, and blueberries are other examples of plants that are interbred and from. Gone through the brewing process are considered moderately to highly acidic, and roses thrive! Morning sun and afternoon shade directly to the rose bushes months ago direct sun, sure! From the University of North Texas, the effect will be positive grow plants in their preferred U.S. of. Twenty-Foot high tomato plant that produces two tomatoes. 'll be of much value to your azaleas office... This organic material to the soil results, home gardeners should apply a 2- to layer... Chemical solvents creative writing from the University of North Texas gardeners should complete. Rose bushes a good source of acid in the garden, but I it!, they note, so I started saving them a few months ago scatter the. Removes almost all traces of chemicals pressing it against stems examples of plants that use... Soil Additive, which makes up about 2 % of its entire composition garden activity acidic they! Retest their balanced soil with an at-home soil pH kit immediately before applying amendments is unnecessary in your Zone. Or when added directly to the rose bushes genus Rhododendron and are a good source of nitrogen coffee... T bad enough, it appears that coffee grounds are not so great for earthworms after all during periods drought...