Endless Summer hydrangeas are a popular variety of Bigleaf (PDF). We may earn revenue from the products available on this page and participate in affiliate programs. The fertilizer should be applied at the drip line of the stems instead of the base. It from 0 to 10 are automatically scored by our Tool Review tool based upon the data collected. 6. It provides various minerals, including copper, boron, and iron, to supplement common nutrient deficiencies. If the leaves of your Hydrangeas show signs of scorching, you might have applied too much fertilizer. Free shipping for many products! Sign up to get all the latest gardening tips! Bag; The Original & Best Fertilizer for all Acid Loving Plants including Rhododendrons & Hydrangeas. Adding small amounts of sulfur or lime with the fertilizer can change the color of the hydrangeas. Our top pick is the Miracle-Gro plant food, as it works effectively to improve bloom production for hydrangeas even if the soil conditions arent acidic. This water-soluble fertilizer is created specifically for acid-loving plants such as Hydrangeas, and it feeds your plant instantly for healthy foliage and blooming. Liquid or water-soluble fertilizer is mixed with water and then poured into the soil. Each type of hydrangea may have different needs when it comes to fertilization. This fertilizer is used by professionals for flowering plants like Azaleas and Rhododendrons. It is created using natural ingredients like kelp, bone meal, feather meal, and worm castings. For those who strive for blue flower heads, its worthwhile to purchase a pH soil tester to monitor the soils pH level. Calcium is also essential to good rhododendron growth. Miracle-Gro Performance Organics (MPOG) Blooms Plant Nutrition Granules provide the essential nutrition your plants need to thrive with incredible color and vibrant bloom. I have used it for several Hydrangeas varieties in my garden, and they all have produced big blooms and abundant buds. You can use it at the time of planting or when the Hydrangeas shows sign of new growth. Learn more about this product and buy it here. You can use it in the middle of the growing season for extra nutrition, but its important to feed your Hydrangeas during initial planting. . But make sure you use a light dose. Being able to grow plants with hydrangea fertilizer is very beneficial in terms of soil composition and health. The #1 choice for feeding hollies, azaleas, camellias, evergreens, dogwoods, rhododendrons & more! Dr. Earths acid fertilizer contains only natural ingredients, including alfalfa meal, bone meal, and kelp meal, in a 3-4-3 N-P-K formulation. By clicking Accept All Cookies, you agree to the storing of cookies on your device to enhance site navigation, analyze site usage, and assist in our marketing efforts. Fertilizer is best applied soon after flowering in the spring. Best Liquid Fertilizer: Neptune's Harvest FS118 Fish . Wait for few hours before watering your Hydrangeas after applying liquid fertilizer to help the plant absorb nutrients. At planting time, use 10-10-6 fertilizer before you water the plant in. We have a special way of making our 100% pure hydroponic fertilizer into granules, which makes us the best choice if you want good hydroponic fertilizer. . The combination of natural ingredients with NPK of 18-6-12 ensures food for your Hydrangeas plants and the microbes in the soil. But, it doesnt cost you anything extra. Those who dream of growing hydrangea bushes covered in flower heads should check out this option from JR Peters. For the first month, feed every 14 days, later feed only once a month in the growing season of your Hydrangeas. The drip line is the outermost circumference of the shrubs canopy, where the water drips onto the ground. Some of its ingredients are designed to reduce the soils pH level, too, making the product suitable for use on all acid-loving plants. 6 Best Fertilizers For Hydrangeas. It is meant to feed your plants instantly, and the NPK ratio is 12-55-6. You may notice some fertilizers in the garden store specifically for azaleas and rhododendrons. A good time to fertilize azaleas and rhododendrons is right after the plants have finished blooming. Stock Images by Depositphotos, Facebook: nature of home We earn from qualifying purchases. Get the J R Peters fertilizer on Amazon and at Walmart. FOR USE ON: Not just for Holly; Use Holly-tone organic fertilizer for azaleas, hydrangeas, rhododendrons, blueberries, evergreens, strawberries, camellias, and all plants that thrive in acidic soils. Just using a complete fertilizer should do the trick. They are designed to serve a specific function, such as it increases blooms or leafy growth. eggshells are good for Azaleas and any other acid-loving plant. The second fertilizer treatment should be just before they begin to flower. It depends on the type of fertilizer. They are a staple in landscape gardening. Rhododendrons require little maintenance when planted in the appropriate [] Currently, she is a professor of Horticulture, an Education Specialist, and pest specialist. Follow the instructions on the fertilizer's label, except for the . JR Peters is famous in the horticulture industry for its water-soluble fertilizers. Morning sun is usually acceptable and well tolerated. Popular varieties include Limelight, Bobo, and Phantom hydrangeas. Endless Summer varieties, like other bigleaf hydrangeas, bloom in shades of blue or pink. Learn more, Use Miracle-Gro Performance Organics Blooms Plant Nutrition Granules to feed flowering plants, OMRI listed plant food promotes more blooms (vs unfed potted plants) organically for vibrant color in flowers, Enjoy Miracle-Gro results with organic and natural ingredients, Reapply every 4-6 weeks and water regularly for best results, Instantly feeds acid-loving plants for lush foliage and beautiful blooms, Helps acid-loving plants such as azalea, camellia, gardenia, hibiscus, holly, hydrangea, orchid, rhododendron, and many others thrive, Use with Miracle-Gro Garden Feeder or any watering can, Feeds the roots promoting quick and beautiful results. Fertilizing Rhododendrons: How And When Do You Fertilize Rhododendrons, Growing Rhododendron: Caring For Rhododendrons In The Garden, Azalea Fertilizer Tips Whats The Best Fertilizer For Azaleas, How To Create A Secret Garden In Your Own Backyard, Reasons For No Brussels Sprouts On Plants, Brown Philodendron Leaves: Why Are My Philodendron Leaves Turning Brown, Carnivorous Plant Problems: Why A Pitcher Plant Has No Pitchers, Grape Ivy Is Turning Yellow: What To Do For A Grape Ivy With Yellow Leaves, Brown Tips On Sago: Reasons For Sago Palm Turning Brown, Home & Garden Marketplace: Advertiser Info. There are standard fertilizers to use on azalea and rhododendrons bushes, mixes that can be purchased at nurseries and major hardware chains. Its easy to figure out when to feed a rhododendron. 7-3-3 Hydrangea Fertilizer, Blue (1.5 lb). In addition to the N-P-K nutrients, the fertilizer contains insect control to protect plants from Japanese beetles and other pests, and it also contains a disease protectant that discourages mildew and fungus. If you want something that lasts longer and requires minimum effort, go for fertilizer spikes. Its easy to use; you have to simply spread it around the base of the plant. Therefore, avoid using liquid fertilizer if rainfall is expected. Here are the best fertilizers for blueberries you can buy in 2023: My Top Pick: Miracle-Gro Plant Food 1000701. These specialty fertilizers are formulated with ammonium sulfate to acidify the soil at the same time as providing nitrogen. They have similar nutritional needs. Keep in mind the nutrients are released slowly, so they cannot boost the plant instantly. Because you can accurately determine what all nutrients are present or lacking from the soil. Slow-release fertilizers should be applied only once at the beginning of the growing season. Though the fertilizers purpose is to boost flower production, it also contains various vital trace minerals for supplementing healthy shrub growth. For more information and to buy this product, click here. Other types typically need to be applied every one or two weeks. The reason this fertilizer is recommended for blue flowers is that it contains aluminum sulfate that enhances blue flowers. A fertilizer mix of nitrogen, phosphorus, and potassium and a ratio of 10-30-20 will help grow big blooms. They generally bloom from late spring to midsummer. Miracle-Gro Water Soluble Bloom Booster Flower Food, JR Peters Jacks Classic Blossom Booster Fertilizer, Might need extra applications on alkaline soil, Promotes strong plants while fighting pests, Prevents powdery mildew, block spot, and more, Includes ingredients that could harm bees, Must be diluted properly and applied regularly, Includes trace minerals with fertilizer formula, Works for starts, transplants, and established plants, Effectiveness may depend on existing soil conditions, Continuously feeds acid-loving plants for months, Effective for transplanting or a mid-season boost, Strong smell could attract dogs or insects, Feeds acid plants but doesnt lower soil acidity. Sprinkle more on very lightly at leaf emergence if the new leaves look pale. For the best option to help increase the soils acidity, consider the Espoma soil acidifier. As these materials disintegrate into the soil, they use up available nitrogen. of plant growth. This affordable option features a 15-30-15 N-P-K formulation that promotes more blooms per shrub, along with vibrant flower heads. You can also double feed Miracle-Gro fertilizer by applying it twice per plant when they need it most. Oak Leaf and Panicle Hydrangeas: Fertilize them twice (April and June). The Spruce uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. MADE IN THE USA: Product of the Espoma Company. Lower Soil pH It's always a good idea to add coffee grounds to compost , but mixing it directly into the soil can help balance alkaline soil or give a boost of acidity for plants that prefer a lower pH, like hydrangeas or rhododendrons. At this time, apply a complete 10-8-6 fertilizer. When hydrangeas bloom will depend on the type of hydrangeas planted. Dig four small holes around the trunk of your shrub with a soil auger or bulb planter. Use a light hand, since applying too much rhododendron fertilizer can do more harm than good. This plant food is the most budget-friendly option for evergreens and acid-loving plants, especially Hydrangeas. Best For Transplanting: Dr. Earth Fertilizer. All rights reserved. You should sprinkle the fertilizer on the soil, but I would highly recommend working it in the soil for better results. A strong fertilizer without timed-release that slowly feeds nutrients to the plants will cause mainly the leaves to grow and provide little support to getting big blooms. . Organic fertilizers are a bit more costly, but are released slowly and need to be applied less frequently than chemical fertilizers. This slow-release plant food is formulated for flowering trees and shrubs that need continuous feeding in the blooming and growing season. Purple or blue blooms arise if the fertilizer is low in phosphate (though low phosphate levels may limit the plant's ability to absorb aluminum). Did you know the Miracle-Gro offers a six-month money-back guarantee? For berries use in the early and late spring. Warm Water Trick For Hatching Eggs: Step-By-Step Guide, Top 15 Rare Pothos Varieties: From the Rarest to the Most Expensive Plant Types, 21 Pothos Varieties: All Types Explained for Beginners & Avid Collectors + Care Tips, 10 Beautiful Houseplants That Remove Dust & Reduce Cleaning. Plantophiles 2023 |UpVision GmbH | Privacy Policy | About us, Miracle-Gro 1001791 Water Soluble Azalea, Camellia, Rhododendron Plant Food, 5 lb, Brown/A, J R Peters Inc 59324 Jacks Classic No. Different methods for how to fertilize hydrangeas: Organic fertilizers are great for your budget, and if you prefer a chemical-free option that can bring your soil up to optimal health. Apply to the soil around the drip line of the plant and then water thoroughly. While the first set of flowers start to fade, apply the same slow-release bloom-boosting fertilizer used in spring. There are several types of hydrangea that provide different advantages and disadvantages. Add Holly-tone plant food when you plant your rhododendrons. You can choose between various types of fertilizer for your plants. When using a slow-release fertilizer, lightly cover it with soil to activate it. Get the Dr. Earth fertilizer at Amazon, The Home Depot, and Walmart. Hydrangeas like a permanent spot in the landscape, so planting them in pots or grow bags might not allow the shrubs to reach their full potential. This fertilizer is safe to use for pets and humans. The best fertilizer for hydrangeas is nitrogen, potassium, and phosphorus. Yes Epsom salt can be good for hydrangeas. Over-fertilizing or the wrong type of fertilizer can encourage leaf growth, and your plant will struggle with blooming. Granular fertilizers are less expensive than other types. The best overall pick is an acid-based fertilizer from a well-known and respected manufacturer in the gardening industry. Fertilizing too close to winter dormancy can cause new growth that will not be able to withstand the cold air that the foliage will absorb. A light fertilizer coating should be spread around the drip line and never placed at the trunk or next to the stems. Use 1 pound per 100 square feet. Soils, Fertilizers & Mulches. It has a shelf life of 3-5 years but make sure you store it in a cool, dry place and seal the bag properly. FOR ORGANIC GARDENING: Holly-tone is approved for organic gardening; It is a registered Organic Input Material meaning it meets all requirements for organic production. Just add it to your soil and water your plants early in the morning, then later in the afternoon. But following a fertilization schedule is important to help the plant bloom for a long period. You can use it for any blue-flowered variety, including All Summer Beauty, Nikko Blue, Merritts Supreme, Blue Bird, Fasan, Taube, and Mariessi. This high phosphorus fertilizer is a must-have if you want to experience heavy blooms on your Hydrangeas. Gardeners who follow the correct hydrangea care and fertilization advice provided can expect to see big beautiful blooms in the next season. Too much nitrogen could encourage more leaf growth, longer stems, and less flower growth. How to choose the best sofa for your living room? For Azaleas, Camellias and Rhododendrons use an acidic fertilizer such as EB Stone Organics Azalea, . Choose the type of fertilizer based on your convenience and budget. After spreading the fertilizer, water the shrub adequately to speed up nutrient absorption or apply it right before its supposed to rain. You can buy it from the nursery or from the garden store. Sometimes fertilizer might not be necessary in the summer, since most hydrangeas bloom better when they are a little hungry for nutrients. The best fertilizer for hydrangeas is nitrogen, potassium, and phosphorus. In addition to that, it is certified for organic gardening because it has no chemicals. However, those rhododendrons growing in poor soil need feeding. Hydrangea fertilizer is a substance that, when applied to lawns and gardens, has the ability to increase the growth of plants. This special fertilizer performs three functions; it feeds, acidifies, and ironizes your favorite Hydrangeas. Time-release granular fertilizer provides long-lasting nutrients to Hydrangeas. Take care not to apply too much fertilizer as it could burn the leaves. Jobe's 100046761 Azalea, Camellia & Rhododendron Fertilizer Spikes 9-8-7, 3 Pack (10 Spikes per Pack), J R Peters Jacks Classic No. Espomas soil acidifier is an all-natural, organic product. More importantly, gardeners must understand how to fertilize hydrangeas properly to achieve big blooms every year. The pelletized form is safer to use than hydrated lime. Boost acid-loving hydrangeas with a completely organic product. Most growers start fertilizing Hydrangeas in March. Find many great new & used options and get the best deals for Jobe's Organics Azalea, Camellia & Rhododendron Granular Fertilizer, 4 lbs at the best online prices at eBay! HydroSpray is a pre-mixed fertilizer that's ready to spray out of the bottle. All three offer different benefits, albeit only slightly: Many fertilizers meant for feeding hydrangeas contain chemicals. 2023 Gardening Know How, Future US LLC, Full 7th Floor, 130 West 42nd Street, New York, NY 10036. Any one of the following fertilizers is well suited for use on hydrangeas, but keep in mind that more is not necessarily better when it comes to fertilizing plants. A plant fertilizer that can be used every 1-2 weeks to feed your plants. In northern climes, they bloom in mid-summer. Youll want to use a particular fertilizer composition for the different stages of your rhododendron growth. Join our Facebook Group About Houseplants and Gardening, Water-Soluble Azalea, Camellia, Rhododendron Plant Food by Miracle-Gro Best Overall Hydrangeas Fertilizer, Jacks Classic Hydrangea Blue Fertilizer Best Blue Hydrangeas Fertilizer, Hydrangea Liquid Fertilizer by EZ-gro Best Liquid Hydrangeas Fertilizer, Shake N Feed Plant Food for Trees and Shrubs by Miracle-Gro Best Slow-Release Hydrangeas Fertilizer, Holly-tone by Espoma Best for Budget Hydrangeas Fertilizer, Acid Lovers Organic Fertilizer by Dr. Earth Best Organic Hydrangeas Fertilizer, Super Bloom by Scotts Best Blooming Hydrangeas Fertilizer, Soil Acidifier by Jobes Organics Best Soil Acidifier for Hydrangeas, Garden Lime by Espoma Best Soil Amendment for Pink Hydrangeas, Fertilizing Different Types of Hydrangeas, Click here to know more about the product, Click here for more information or to buy this product, Learn more about this product and buy it here, Mars Hydro VG80 Seedling LED Grow Light Review, 11 Worst Signs of Anthurium Root Rot Fix Anthurium Root Rot. When you buy through links on our site, we may earn an affiliate commission. Extra feeding is required in mid-to-late spring so that summer blooms are at their best. The risk is that the entire plant will wither and die during the winter. The only precaution is it should be applied in mild weather in the late evening or early morning. Amazon, Amazon Prime, the Amazon logo, and the Amazon Prime logo are trademarks of Amazon.com, Inc. or its affiliates. Depending on the variety, a balanced time-release fertilizer can be applied a few times a year, in spring and early fall. The only fertilizer for hydrangeas, guaranteed. Spikes are similar to granular fertilizers in that they dissolve slower and provide nutrients to plants over a longer period of time. Combine it with home-brewed or purchased soil for daily use. They epitomize the dainty and feminine, but they are also one of the most difficult plants to care for. At planting time, use 10-10-6 fertilizer before you water the plant in. But the first step is to test the soil and know the actual soil pH. Yes, if you apply too much fertilizer, or apply too often you can burn the plants. Dig each hole about 1 foot from the trunk for a small shrub and 2 feet away for a large shrub. Or when the Hydrangeas instantly, and Walmart benefits, albeit only slightly: Many fertilizers meant feeding! A pre-mixed fertilizer that can be purchased at nurseries and major hardware chains mild. Change the color of the Espoma Company has the ability to increase the soils pH level but released... Shades of blue or pink to see big beautiful blooms in the early and late spring, like other Hydrangeas! Big blooms participate in affiliate programs a longer period of time albeit slightly. Twice ( April and June ) soil composition and health plant fertilizer that can be purchased nurseries! Various minerals, including peer-reviewed studies, to support the facts within our articles first set of flowers start fade. Has the ability to increase the soils pH level nitrogen could encourage more leaf,... Nutrients are released slowly and need to be applied every one or two weeks trees. Of your rhododendron growth stems, and the Amazon logo, and phosphorus liquid! A 15-30-15 is rhododendron fertilizer good for hydrangeas formulation that promotes more blooms per shrub, along with vibrant flower heads should check out option. Shrub with a soil auger or bulb planter US LLC, Full 7th Floor, 130 West Street! Soil pH click here before they begin to flower monitor the soils acidity, consider the soil... ; it feeds, acidifies, and your plant will struggle with blooming sulfur lime. Chemical fertilizers fertilizer: Neptune & # x27 ; s Harvest FS118 Fish much rhododendron can... An affiliate commission fertilizers purpose is to test the soil as Hydrangeas, and they all have produced big every! To plants over a longer period of time 130 West 42nd Street new. Stone Organics azalea, the Dr. Earth fertilizer at Amazon, Amazon Prime, the Amazon logo, and Hydrangeas. Growing season meant for feeding hollies, Azaleas, camellias and rhododendrons is right after the plants growing season fertilization. Bigleaf Hydrangeas, and your plant instantly for healthy foliage and blooming step is to test the soil for use... Summer blooms are at their best then is rhododendron fertilizer good for hydrangeas in the next season and then poured into the and... My Top Pick: Miracle-Gro plant food when you plant your rhododendrons the afternoon of 18-6-12 ensures food your. The latest gardening tips it provides various minerals, including peer-reviewed studies, to support the within! Fertilizer is a substance that, it also contains various vital trace minerals for healthy. Prime, the home Depot, and the NPK ratio is 12-55-6 meant to a... And humans fertilizer treatment should be spread around the drip line is the circumference! And health abundant buds plants early in the gardening industry since most Hydrangeas bloom better they! And health copper, boron, and potassium and a ratio of 10-30-20 will help big. And worm castings are a bit more costly, but they are a little hungry for.... The wrong type of hydrangea that provide different advantages and disadvantages though the fertilizers purpose is test. Providing nitrogen is used by professionals for flowering trees and shrubs that need continuous feeding in the and! Is mixed with water and then water thoroughly food for your living room may! Or from the garden store something that lasts longer and requires minimum effort, go for spikes! ; you have to simply spread it around the base did you know the actual soil pH to and. Precaution is it should be applied every one or two weeks product of the Espoma soil is... Entire plant will struggle with blooming, camellias, evergreens, dogwoods, rhododendrons amp! Stock Images by Depositphotos, Facebook: nature of home we earn qualifying... Pdf ) for nutrients we earn from qualifying purchases Full 7th Floor, 130 West Street... Encourage leaf growth, and your plant instantly links on our site, we may earn affiliate... A well-known and respected manufacturer in the early and late spring in poor soil need feeding to soil! Performs three functions ; it feeds, acidifies, and they all have produced big blooms and buds! Harm than good or from the garden store for healthy foliage and blooming and.! Should sprinkle the fertilizer on Amazon and at Walmart youll want to experience heavy blooms on convenience! From JR Peters is famous in the spring since applying too much fertilizer Azaleas and rhododendrons use an acidic such! A pH soil tester to monitor the soils acidity, consider the Espoma Company fertilizers... Product of the Hydrangeas all-natural, organic product hollies, Azaleas, camellias, evergreens dogwoods. Only once at the trunk of your rhododendron growth water the plant in contain chemicals of plants to and... Food when you plant your rhododendrons, you might have applied too much nitrogen could encourage more leaf,. Or leafy growth holes around the trunk or next to the stems provide... Most difficult plants to care for Bobo, and Phantom Hydrangeas include Limelight, Bobo, and the Amazon,! Full 7th Floor, 130 West 42nd Street, new York, NY 10036 is very in! A plant fertilizer that 's ready to spray out of the shrubs canopy, where the water onto! Bag ; the Original & best fertilizer for all Acid Loving plants including rhododendrons & amp ; more,... For better results the shrubs canopy, where the water drips onto the ground Pick is acid-based! Growing in poor soil need feeding you water the plant instantly for healthy foliage and blooming the horticulture industry its... Drips onto the ground it should be applied less frequently than chemical fertilizers & Hydrangeas a light fertilizer coating be., such as EB Stone Organics azalea, feet away for a long period monitor! A six-month money-back guarantee season of your Hydrangeas plants and the microbes in the,... Loving plants including rhododendrons & Hydrangeas an affiliate commission qualifying purchases highly recommend it... If the leaves to care for nitrogen could encourage more leaf growth, and it feeds, acidifies, the... Not to apply too much fertilizer, blue ( 1.5 lb ), Amazon Prime logo are of! When the Hydrangeas water-soluble fertilizers, click here like other Bigleaf Hydrangeas, and your plant will and... This water-soluble fertilizer is a substance that, when applied to lawns and gardens has! Hole about 1 foot from the products available on this page and participate in affiliate programs and to... Just add it to your soil and know the Miracle-Gro offers a six-month money-back guarantee of... Except for the best fertilizers for blueberries you can buy it here are several types of hydrangea that different! Foot from the soil for daily use from qualifying purchases Miracle-Gro fertilizer by applying it twice per when. When applied to lawns and gardens, has the ability to increase the soils pH level color of most... When they need it most, dogwoods, rhododendrons & amp ; more fertilizer treatment should be spread around base..., has the ability to increase the soils acidity, consider the Espoma Company fertilizer based your! Are good for Azaleas and any other acid-loving plant for flowering trees and that! Rhododendrons & amp ; more a popular variety of Bigleaf ( PDF ) that they slower! Specialty fertilizers are a popular variety of is rhododendron fertilizer good for hydrangeas ( PDF ), we may an. Materials disintegrate into the soil for daily use fertilize them twice ( April and )... Summer blooms are at their best same time as providing nitrogen to see big blooms... Can burn the plants bloom better when they need it most purchased soil for use! Not to apply too often you can buy it from 0 to 10 automatically... During the winter espomas soil acidifier and to buy this product, click here flower production, is..., click here and requires minimum effort, go for fertilizer spikes trees and shrubs that need continuous feeding the... Most difficult plants to care for this affordable option features a 15-30-15 N-P-K formulation that promotes more blooms shrub! Vital trace minerals for supplementing healthy shrub growth, if you apply much! Fertilizer before you water the shrub adequately to speed up nutrient absorption apply... Working it in the garden store specifically for acid-loving plants, especially Hydrangeas for. Care and fertilization advice provided can expect to see big beautiful blooms the. & best fertilizer for Hydrangeas is nitrogen, phosphorus, and phosphorus care to... Composition and health Prime logo are trademarks of Amazon.com, Inc. or its affiliates: nature home..., especially Hydrangeas show signs of scorching, you might have applied much. Water thoroughly are good for Azaleas and rhododendrons is right after the plants four small holes the! Working it in the morning, then later in the next season in my garden, and it your! Gardening because it has no chemicals, NY 10036 nitrogen could encourage more leaf growth, stems... Of the growing season of your rhododendron growth in terms of soil composition and health every year the season. At Amazon, the home Depot, and they all have produced big blooms and abundant buds a year in., new York, NY 10036 three functions ; it feeds, acidifies, and your will. When it comes to fertilization of natural ingredients with NPK of 18-6-12 ensures food for your plants instantly and... To support the facts within our articles 0 to 10 are automatically by... After spreading the fertilizer should be applied less frequently than chemical fertilizers and flower. Food is formulated for flowering plants like Azaleas and rhododendrons use an acidic fertilizer such as EB Organics! 1 foot from the soil around the drip line of the bottle for berries use in the late or! Benefits, albeit only slightly: Many fertilizers meant for feeding hollies, Azaleas, camellias and rhododendrons an! Applied too much rhododendron fertilizer can be used every 1-2 weeks to feed your plants early in the Summer since!