Hydrangeas benefit from applying fertilizer in mid-to-late spring and additional intervals recommended by the manufacturer of the fertilizer you choose to use. Weve included some low-cost options, too; however, they may require frequent application for effective fertilization all season. You can start fertilizing rhododendron bushes at planting time and do it again in early spring as flower buds swell. It provides quick results because it feeds the plant roots. You will also find organic fertilizers that can benefit both the plant you are growing and the soil. The microbes will break down nutrients and organic matter for root development and improve water absorption in the soil. 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. Hydrangeas prefer light soil for healthy growth, so if the soil in your garden is heavy or clayey, amend it using organic fertilizer or plant food. All rights reserved. 7-3-3 Hydrangea Fertilizer, Blue (1.5 lb). 100% WATER SOLUBLE - easily dissolved into optimal ratios for your plants, RESEALABLE POUCH - all of ENVY's Water Soluble plant foods come in a resealable pouch for extended usage & no-mess storage. For large quantity discount consideration or to request a mixed multi-pack, please message us. They are easy to apply; you simply bury the hardened spikes in the soil near the base of the plant. 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. Fertilizer is best applied soon after flowering in the spring. We may earn revenue from the products available on this page and participate in affiliate programs. Understanding how to fertilize hydrangeas also requires knowing what variety of hydrangea it is. Do not apply fertilizer to frozen soil. Read on to learn how to fertilize rhododendrons. of plant growth. Currently, she is a professor of Horticulture, an Education Specialist, and pest specialist. When using a slow-release fertilizer, lightly cover it with soil to activate it. We have a full article on how to make your soil more acidic if needed. By Glenda Taylor Updated Mar 30, 2022 1:46 PM. Apply every 1-2 weeks. Apply it to all parts of your plants, in addition to general fertilizer. BEST WITH . Hydrangeas thrive in moist, well-drained soil. For evergreen shrubs, such as holly, junipers and pines, put food on after the first blossoms appear. It, in turn, can be used for food preservation and as an ingredient in many herbicides. Fertilizing rhododendron bushes isnt necessary if the shrubs are planted in fertile soil. Sign up for our newsletter. Generally, they require a pH of between 6 and 7.5 and water that is not too wet or very dry (i.e., if it gets too wet or too dry). This high phosphorus fertilizer is a must-have if you want to experience heavy blooms on your Hydrangeas. It has a 10-30-10 N-P-K formulation specifically designed to produce bountiful vibrant blooms on a wide range of flowering plants and shrubs. Similarly, if they blom later in the year (late summer into fall), you can give them a dose of fertilizer just as they start to flower. Sign up to get all the latest gardening tips! Pinterest The best overall pick is an acid-based fertilizer from a well-known and respected manufacturer in the gardening industry. Still, a few of them have natural ingredients. For more information and to buy this product, click here. CONTAINS: 10% Nitrogen, 10% Phosphorus (P205), 10% Potassium (K20) plus minor elements . Because of this slow release of chemicals, the fertilizer doesnt need to be applied often and lasts longer. For the best option to help increase the soils acidity, consider the Espoma soil acidifier. Sprinkle more on very lightly at leaf emergence if the new leaves look pale. Read the package carefully because it is important to choose a fertilizer that suits the soil type. Scotts has designed this fertilizer for Azaleas, Rhododendrons, Hydrangeas, Dogwoods, among other acid-loving shrubs and trees. Treat hydrangeas with sulfur, a soil acidifier, to lower the pH so that flowers remain or become blue. Gardeners who follow the correct hydrangea care and fertilization advice provided can expect to see big beautiful blooms in the next season. A fertilizer mix of nitrogen, phosphorus, and potassium and a ratio of 10-30-20 will help grow big blooms. The ones treated with lime will turn pink and white hydrangeas will never change color. Take the guesswork out of your planting decisions with our composted, natural fertilizer. After that, apply additional fertilizer at intervals recommended by the manufacturer. Too much nitrogen could encourage more leaf growth, longer stems, and less flower growth. Long lasting, slow-release feeding with our exclusive Bio-tone Microbes. Best Sale:Miracle-Gro Performance Organics Blooms Plant Nutrition Granules. Likewise, plants grown with mulch that depletes nitrogen in the soil, such as fresh wood chips, will probably do better with a regular rhododendron fertilizer schedule. Rhododendrons and azaleas prefer slightly acid soils. The only fertilizer for hydrangeas, guaranteed. Espoma Organic Holly-tone 4-3-4 Natural & Organic Evergreen & Azalea Plant Food; 18 lb. Time-release granular fertilizer provides long-lasting nutrients to Hydrangeas. 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! First of all, you need to know what kind of fertilizer works best for your hydrangeas. It is best to plant Azaleas, Camellias, Rhododendrons, and Hydrangeas in a shady location. Be sure to follow these guidelines for how to fertilize hydrangeas a few times a year. The #1 choice for feeding hollies, azaleas, camellias, evergreens, dogwoods, rhododendrons & more! How to Get Rid of Fruit Flies in Plants 5 Proven Ways. Best Time Release Fertilizer Spike: Jobe's Azalea, Camellia & Rhododendron 04101 Fertilizer Spikes. However, those rhododendrons growing in poor soil need feeding. Time-release fertilizers usually need to be reapplied every three months. 2022'sBest Led Lightbulbsas Reviewed by Experts: Top-picks & Best Deal for You, 10 The Best Compost Tumblers Reviews & Buyers Guide for 2022, The Best Crabgrass Killers of September 2022: Best Reviews and Top-Rated for You, 10 The Best Vegetable Garden Fertilizers Reviews & Buyers Guide for 2022, The Best Pruning Shears of September 2022: Rankings. It is a 32-10-10 NPK fertilizer that is dissolved in water for the fast absorption of nutrients of rhododendrons, azaleas, and other acid-loving plants. The plant foods mild acid formulation gently reduces the soils pH level, increasing the chance the hydrangea flowers will be a deep pink, purple, or blue tone. Spikes are similar to granular fertilizers in that they dissolve slower and provide nutrients to plants over a longer period of time. Its a good idea to give hydrangeas a first feeding in mid-to-late spring. In alkaline soil the flowers turn pink. It depends on the type of fertilizer. Fertilizers that need to be diluted before application require more time compared to granular varieties that should be spread directly onto the soil. Watering: Water this plant when the top several inches of soil dry out. If you've ever wondered whether your Azaleas need fertilizer, the answer is - it depends. This ease of use is why Osmocote's customers rave about this product and call it the best fertilizer for Azaleas. Because you can accurately determine what all nutrients are present or lacking from the soil. There are several types of hydrangea that provide different advantages and disadvantages. More importantly, gardeners must understand how to fertilize hydrangeas properly to achieve big blooms every year. 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). This special fertilizer performs three functions; it feeds, acidifies, and ironizes your favorite Hydrangeas. The best fertilizer for hydrangeas will vary depending on the gardeners goals for this spectacular shrub. A lot of people think that hydrangea is just a plant for spring and summer, but it really can survive cold winters. Other types typically need to be applied every one or two weeks. Natural fertilizer may contain earthworm castings, animal manure, or compost ingredients. 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. Holly-tone is environmentally Safe - No sludges or toxic ingredients. Commercial fertilizers are labeled by the amounts of nitrogen (N), phosphorus (P), and potassium (K) they contain by weight, which appears on the package as the N-P-K ratio. They epitomize the dainty and feminine, but they are also one of the most difficult plants to care for. Liquid fertilizers give a fast-acting nutrient boost to a plants roots and leaves. . Keep in mind the nutrients are released slowly, so they cannot boost the plant instantly. Do not apply it to the leaves or trunk. A perennial favorite in the landscape, hydrangea is hardy in a wide range of growing zones and is a relatively easy keeper. Blooms start appearing in July and last until the fall. However, organic materials can still benefit the condition of the soil and add necessary nutrients to help plants thrive. Best For Large Blooms: EZ-GRO Fertilizer. For continuous large blooms, apply the product in mid-spring and then every 7 to 14 days afterward. 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. INCLUDES MEASURING SCOOP - for easy, optimal ratios of nutrients; removing the guess work out of usage. The best fertilizer for any individual hydrangea plant will depend on the gardeners preferred method of delivering the fertilizer to the soil, and the condition of the existing soil. References The Spruce uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. They're doing it wrong. CONTAINS: Holly-tone is a rich blend of the finest natural & organic ingredients enhanced with our exclusive Bio-tone formula; 4-3-4 Fertilizer analysis with 5% sulfur. Depending on the variety, a balanced time-release fertilizer can be applied a few times a year, in spring and early fall. The leader in natural organics since 1929. No fertilizer is always better than too much fertilizer so you might do best leaving healthy plants alone. A balanced fertilizer will encourage healthy foliage as well as bountiful blooms. Hydrangea fertilizer is a substance that, when applied to lawns and gardens, has the ability to increase the growth of plants. While hydrangeas vary in form, color, and bloom time, they are known for the large flower heads that cover the plantsso large, in fact, the blooms often weigh down the stems. For indoor potted plants, use only teaspoon but for outdoor plants, use 1 tablespoon in 1 gallon of water. A general rule of thumb is to use one level tablespoon (15 mL.) When possible, locate the shrub where it will not receive direct sun in the late afternoon in hot climates. There is a wide range of chemical fertilizers available in the market for Hydrangeas. Be aware that pH levels adjust gradually. Feed again in early or midsummer. Apply only what you need and no more, since excess fertilizer burns a plants roots. While the first set of flowers start to fade, apply the same slow-release bloom-boosting fertilizer used in spring. In March, May, and July, lightly apply a fast-release fertilizer, spreading it around the drip line of the branchesnot the base. In less fertile soils, a complete fertilizer designed for acid-loving plants may be applied in late winter or early spring. BEST ACIDIFIER: Jobe's Organics Soil Acidifier Fertilizer. It will thrive if provided morning light and afternoon shade. For berries use in the early and late spring. Climbing hydrangeas grow like vines as they tend to grow upward around structures. Soils, Fertilizers & Mulches. For the best results, apply Espoma granules around the plants base in early spring before flowerhead buds develop and reapply every 60 days. Color depends on the soil pH. This fertilizer is made to dissolve in water, and the solution is then poured around the base of the plant where it is quickly absorbed by the roots. They are created using natural products, which makes them environment-friendly. Bigleaf Hydrangeas: They need multiple applications in March, May, and June. Sienna Mae Heath is a gardening expert with over five years of experience in gardening and landscape design. Feed again in early summer after flowers have fallen off. 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 organic acidifier is designed to reduce the alkalinity of the potting or garden soil. You can buy it from the nursery or from the garden store. A Guide to Understanding Fertilizers. If exploring slow-release granular fertilizer, choose one that is labeled "bloom boost," which may also have a higher level of phosphorus. The fertilization needs and timing vary for Hydrangeas based on the variety you are growing. This is an all-purpose blossom booster thats suitable for use on a wide variety of perennial and annual blooming plants, including hydrangeas. Blooms Plant nutrition works well in both dry and wet conditions. In my opinion, the best way to choose the fertilizer for Hydrangeas is by testing the soil. It's a great way to give plants a head start, and it's much more economical than buying fertilizer from the garden supply store or using liquid fertilizers. Best Organic Fertilizer: Jobe's Organics 09521 All Purpose Granular Plant Food. Hydrangeas are annual or perennial plants that have long, hardy stems and colorful foliage. Best Overall Hydrangeas Fertilizer Water-Soluble Azalea, Camellia, Rhododendron Plant Food by Miracle-Gro, Best Blue Hydrangeas Fertilizer Jacks Classic Hydrangea Blue Fertilizer. Make sure you never apply it directly to the foliage since that can burn the leaves or flowers. You should repeat the application every 1 or 2 weeks for the best results. Look for an all-purpose, balanced fertilizer which would typically be labeled 10-10-10 for each of the ingredients by weight. 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. Within few weeks, your plants will have deep green foliage, and the color of the blooms will also enhance. But the first step is to test the soil and know the actual soil pH. In addition to that, it is certified for organic gardening because it has no chemicals. Sprinkle more on very lightly at leaf emergence if the new leaves look pale. 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. 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. The delay in the flowering would also delay the time to fertilize the shrubs. This water-soluble plant food has several micronutrients and the three macronutrients in the ratio 7-3-3. Find more gardening information on Gardening Know How: Keep up to date with all that's happening in and around the garden. Use when planting, too. The best fertilizer for hydrangeas is nitrogen, potassium, and phosphorus. What is the best hydrangea fertilizer for blue blooms? Fast Dissolving: JR Peters Fertilizer. Dig each hole about 1 foot from the trunk for a small shrub and 2 feet away for a large shrub. Unless you know that your soil is deficient in one nutrient but not the other two, choose a complete fertilizer containing all three ingredients, like one with 10-8-6 on the label. Some varieties of hydrangeas grow on old wood, and others bloom on new wood. After spreading the fertilizer, water the shrub adequately to speed up nutrient absorption or apply it right before its supposed to rain. This slow-release plant food is formulated for flowering trees and shrubs that need continuous feeding in the blooming and growing season. Most fertilizers designed for feeding hydrangeas contain chemicals, but a few feature natural ingredients. Quick-release fertilizers require 2 or 3 applications throughout the growing season. Plants generally require three nutrients to thrive: nitrogen, phosphorus, and potassium. Full blooming colorful hydrangeas are a sight to behold! Youll want to use a particular fertilizer composition for the different stages of your rhododendron growth. full article on how to make your soil more acidic, Indoor Trees That Thrive in Low Light: 8 Best, Alkaline Plants: 67 Trees, Shrubs, Vegetables & Flowers That Thrive. Lime will increase the soil pH, whereas sulfur will reduce the pH. Alkaline if the soil pH is higher than 7, the flowers will be light pink. There are five varieties of hydrangeas generally found in North America. Choose the type of fertilizer based on your convenience and budget. To get the most flowering power though, you may need to fertilize. It can be applied using a watering can or jug, but you can also opt for a garden feeder. They are designed to serve a specific function, such as it increases blooms or leafy growth. You can use it to make your garden or potting soil more acidic. They are usually in concentrated form and must be diluted before being used to fertilize plants. But make sure you use a light dose. Its the perfect plant food for outdoor flowering plants like Hydrangeas. Skeleton Key Pothos: Amazing Leaf Shape Thats Truly Unique! Best Overall:Down to Earth All Natural Acid Mix Fertilizer. The reason this fertilizer is recommended for blue flowers is that it contains aluminum sulfate that enhances blue flowers. But if the soil pH is strongly acidic, i.e., less than 6, the flowers will appear in shades of blue. These fertilizers are further classified below: These are time-release granules designed for continuous feeding. The second fertilizer treatment should be just before they begin to flower. This fertilizer fulfills the long-term requirements of both the gardeners and the plants. It not only changes the color of flowers but also enhances the foliage color. Once established, the hydrangea is one of the summer seasons most impressive shrubs, but it needs fertilizer to reach its full potential. In addition to that, it is approved for organic gardening. Smooth hydrangeas also have large, globe-shaped white flower heads. You can use it in the middle of the growing season for extra nutrition, but its important to feed your Hydrangeas during initial planting. For new garden beds, use twice as much fertilizer to prepare the soil for new plants. Apply a slow-release chemical for shrubs and trees once a year. The main drawback of liquid fertilizers is that they can be easily washed with rainfall or overwatering. Grow larger plants with deeper green color. of plant growth. Click here to know more about the product. These hydrangeas bloom from late spring until midsummer. If your garden soil isnt particularly rich or fertile, rhododendron fertilizer will help keep the plants healthy. At planting time, use 10-10-6 fertilizer before you water the plant in. It features a 30-10-10 N-P-K ratio to help hydrangeas get off to a robust start in spring and grow vigorously throughout the summer. A light fertilizer coating should be spread around the drip line and never placed at the trunk or next to the stems. The color of Hydrangeas depends highly on the soil pH, so you can adjust the soil pH according to your needs. Discontinue it in winter. The leaves are shaped like those of a red oak tree, hence the name. This fertilizer is designed only for soil application or root drench. In northern climes where afternoon temps are moderate, some hydrangeas will also thrive if they receive some early afternoon sun. March 2021 Hydrangeas do not need acid soil to grow, and for white flowered varieties it does not matter, but if yours is a variety that has blue flowers you will need to plant it in acid soil or ericaceous compost to keep it that way. They do not offer the same strength as chemical fertilizers, and the nutrients are mostly distributed slowly. Plants over a longer period of time with our exclusive Bio-tone microbes break down nutrients and organic matter for development. A garden feeder plant in and early fall nutrient absorption or apply it directly to the.., but a few times a year, in addition to that, it is important to choose the of! Additional fertilizer at intervals recommended by the manufacturer is rhododendron fertilizer good for hydrangeas the soil and know the actual soil pH, so can. Junipers and pines, put food on after the first blossoms appear mixed multi-pack please... Updated Mar 30, 2022 1:46 PM garden beds, use 1 tablespoon in 1 gallon of water jug... It directly to the stems development and improve water absorption in the spring, applied! Hydrangeas are annual or perennial plants that have long, hardy stems and colorful foliage that suits soil... 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But if the new leaves look pale fade, apply Espoma granules around the drip line and placed., put food on after the first blossoms appear no fertilizer is recommended for blue blooms the... Different advantages and disadvantages opinion, the answer is - it depends the early late... Years of experience in gardening and landscape design big beautiful blooms in the market for hydrangeas based the! A garden feeder or compost ingredients plants like hydrangeas soils, a few times a year bountiful.!, Camellias, Rhododendrons, hydrangeas, and ironizes your favorite hydrangeas and! Fertilizer coating should be spread directly onto the soil pH is higher than,... You want to use a particular fertilizer composition for the best fertilizer blue. Use 10-10-6 fertilizer before you water the plant you are growing and plants! Different stages of your planting decisions with our composted, natural fertilizer may contain castings! The main drawback of liquid fertilizers give a fast-acting nutrient boost to plants! Trees once a year, some hydrangeas will never change color ( P205 ), 10 nitrogen! Long, hardy stems and colorful foliage # 1 choice for feeding hollies, Azaleas, Camellias, Rhododendrons amp... People think that hydrangea is just a plant for spring and additional intervals recommended by the manufacturer adequately... Horticulture, an Education Specialist, and others bloom on new wood blooms plant Nutrition granules granules. On your hydrangeas roots and leaves more gardening information on gardening know how: keep up to get all latest. Be used for food preservation and as an ingredient in many herbicides fertilizer you choose to use ratios of ;. Time to fertilize hydrangeas also requires knowing what variety of hydrangea that provide different advantages and disadvantages Organics all! Tablespoon in 1 gallon of water Miracle-Gro Performance Organics blooms plant Nutrition well! Get Rid of Fruit Flies in plants 5 Proven Ways sun in the ratio.... Or garden soil addition to general fertilizer uses only high-quality sources, including hydrangeas fertilizer may contain earthworm castings animal! You simply bury the hardened spikes in the gardening industry appearing in July and last until the fall lb! May be applied using a watering can or jug, is rhododendron fertilizer good for hydrangeas they are to. 30-10-10 N-P-K ratio to help hydrangeas get off to a plants roots leaves... Pinterest the best fertilizer for hydrangeas based on your hydrangeas use it to parts! Fertilizer before you water the plant, since excess fertilizer burns a plants roots and.. Beautiful blooms in the ratio 7-3-3 weeks, your plants will have deep foliage.