7 Best Plant Food For Hydrangeas (Fertilizers For Vibrant Hydrangea Bloom)

Best Plant Food For Hydrangeas


You can find hydrangeas in different varieties and colors. So, most likely than not, there is a hydrangea for everyone. Like every other flowering plant, even the hydrangea will grow well if it gets the right nutrients from fertilizers, water, and the sun.


Hence, it is quintessential to pick the best feed for hydrangeas. Be it white, blue, or pink; your plant will most definitely blossom if you feed them right.


Hydrangeas prefer soil, which is light and drains well. If you have soil with a clay texture, you can add some compost or gypsum.


But how do you find the right mix of fertilizer for your hydrangeas? Well, you have nothing to worry about. We researched and shortlisted the seven best fertilizers for hydrangeas based on NPK ratio, ease of application, cost, etc.


Let’s have a look at them!


Top Picks At A Glance


Table of Contents


Let’s Compare These Plant Foods for Hydrangeas

Product Components (Nitrogen, Phosphorus, Potassium) Type Usage Frequency Buy Now
Miracle-Gro Water Soluble Miracid Acid-Loving Plant Food Scotts Company Miracle-Gro 1750011 Water Soluble Miracid Acid-Loving Plant Food, 1-Pound (3) 30-10-10 NPK Granular Every 2 weeks Check price on Amazon
Jobe’s Organics 9364 Fertilizer Jobe’s Organics 9364 Fertilizer – 6 lb Sulfur and Gypsum Granular 2-3 times a year Check price on Amazon
Espoma HT18 Holly ToneEspoma HT18 Holly Tone – 18 lb 4-3-4 NPK* Liquid In spring and late fall Check price on Amazon
Hydrangea Fertilizers by E Z-GROHydrangea Fertilizers by E Z-GRO – 1 qt 21-7-7 NPK* With added Aluminum Sulfate and Micronutrients Liquid 2-1/2 oz every 2 weeks in 1st month after planting.
Later, once a month
Check price on Amazon
J R Peters Inc 59324 Jacks ClassicJ R Peters Inc 59324 Jacks Classic – 1.5 lb 7-3-3 NPK* with added aluminum sulfate Granular Every 2 weeks Check price on Amazon
Dr. Earth 703P Organic Acid FertilizerDr. Earth 703P Organic Acid Fertilizer – 4 lb 4-5-4 NPK*

  • Pro-biotic material
  • 7 strains of beneficial soil microbes
  • 8 strains of ecto and endo mycorrhizae
  • Once midseason
  • For container plants – every 6 weeks
Check price on Amazon
Bonide (BND56428)Bonide (BND56428) – Bailey’s Color Me Blue Pellets – 2.75 lb With 90% elemental sulfur Pellets Add to soil during planting Check price on Amazon


Hydrangea Fertilizers: Seven Plant Foods to Choose From

1. Miracle-Gro Water Soluble Miracid Plant Food – 1 lb

Best Fertilizer For Hydrangea Blooms Overall
Miracle-Gro Water Soluble Miracid Acid-Loving Plant Food Check price on Amazon


Speaking of the best plant food for hydrangeas, the first one on our list is the Miracle-Gro Water Soluble plant food. Miracle Gro is one of the best fertilizers for hydrangeas to bloom and even other acid-loving plants such as Azaleas, Holly, Camellias, Orchids, Hibiscus, Gardenias.


This is a good fertilizer for hydrangeas with an NPK ratio of 30-10-10. This employs a double feeding mechanism for maximum nutrient absorption by the plant through its leaves and roots. It will give your plants beautiful blooms in abundance and vibrant colors.


  • Provides iron to the hydrangeas
  • Acidifies the soil and makes it conducive for growth
  • Fast-release plant food for hydrangeas
  • Shows quick results



  • Needs careful proportioning for best results
  • Not available in a larger package size
  • Users have reported faulty packaging issues


How to use it?

This fertilizer works instantly and starts showing beautiful and quick results. You can feed our plant with this hydrangeas Miracle Gro fertilizer every fourteen days in the growing season.


For indoor plants – Take ½ teaspoon fertilizer per gallon of water. Mix well and feed it to the plant every fourteen days.

For outdoor plants – Take ½ tablespoon of Miracle Gro and add it to ½ gallon of water before administering it your plants.


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2. Jobe’s Organics 9364 Fertilizer, 6 lb

Jobes Organics Fertilizer 6 lb Check price on Amazon


At number second on our list is the Jobe’s Organics 9364. The main ingredients of this fertilizer are sulfur and gypsum. It is a remarkable pick for you if you look for granular organic fertilizer that helps lower soil alkalinity.


Just make sure to check your soil pH before applying this fertilizer. This is also a good fertilizer for hydrangeas to change their color from pink to blue.



  • 100% organic, so it contains no synthetic chemicals that could burn the shrubs
  • OMRI listed by USDA
  • Perfect for azaleas, blueberries, turf, and hydrangeas
  • Promotes darker green growth
  • Changes color from pink to blue and accentuates foliage
  • Healthy soil amendment
  • Betters plant hardiness and improves resistance to disease
  • Easy to pour bag
  • Safe for use around children and pets
  • Cost-effective option



  • It may be a breeding ground for raccoons and squirrels
  • The color-changing effect may take time, so you have to be patient


How to use it?

As mentioned on the instruction label, you can use this plant food for hydrangea at the time of plantation and reapply it two or even three times a year to maintain soil acidity.
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3. Espoma HT18 Holly Tone, 18-Pound – Best Slow Release Fertilizer For Hydrangeas

Quality Organic Pick
Espoma HT18 Holly Tone, 18-Pound - Best Slow Release Fertilizer For Hydrangeas Check price on Amazon


Epsome Holly HT18 is the best feed for hydrangea that comes packed with Bio-tone microbes. It is derived from bone meal, feather meal, poultry manure, alfalfa meal, greensand, sulfate of potash and magnesia, and sulfer.


It is 100% natural organic feed for your hydrangeas in 4, 8, 18, and 36, 50-pound bags. This is a good fertilizer for hydrangeas, blueberries, azaleas, rhododendrons, blueberries, and strawberries.


Professionals and gardeners across the world use this slow release fertilizer for their hydrangeas to restore the soil balance and give hydrangeas the requisite growth.


It also contains six hundred thousand active Colony-Forming Units of Bacillus and Paenibacillus per gram.



  • Nutrient-rich and 100% organic
  • Budget-friendly plant food for hydrangeas
  • Offers long-lasting results
  • Approved for organic gardening
  • Long shelf life of three to five years
  • Right quantities of magnesium, calcium, and sulfur for ideal growth
  • It comes ready to use in multiple package sizes
  • Long-lasting and slow-releasing product that delivers nutrition over several weeks
  • Exquisite bio-tone microbes included
  • Won’t burn the plants



  • It has a very strong smell
  • Packaging issues


How to use it?

You can use this best fertilizer for blue hydrangeas in the late fall and spring seasons. This fertilizer needs no assembly. However, it should be reapplied every forty-five to sixty days. You can measure the product as advised and sprinkle it around the water and the drip line.


Check price on Amazon

4. Hydrangea Fertilizers by EZ-Gro

Hydrangea Liquid Fertilizer


Hydrangea Fertilizers by EZ-Gro Check price on Amazon


Another good fertilizer for hydrangeas with no added chlorides is this one by EZ-Gro. The brand has been around for over four decades and offers some of the best fertilizers for hydrangea. This fertilizer has an NPK ratio of 21-7-7.


In addition, this also contains micronutrients and aluminum sulfate. It is one of the best plant food for hydrangeas as it provides the plants with iron and other trace elements and effectively lowers the soil’s pH.


To provide optimal nutrition, you can use this fertilizer for hydrangeas, azaleas, orchids, camellias, rhododendrons, and gardenias. There is also a measuring cup in the package that aids in seamless measurement.


Specifically, it is the best fertilizer for blue hydrangeas as it enhances the blue color. However, it is not very effective in turning them blue from white.


  • Easy to use and mix
  • Accentuates the blue color of the flowers
  • Shows results in just a few hours
  • It comes with a measuring cup



  • Not suitable for turning white hydrangeas to blue.
  • Cups tend to break down in transit
  • A bit pricey for its value


How to use it?


You can use this fertilizer every two weeks for the initial one month; following this, and you can lower the application to only once in 30 days. Make sure not to apply it directly to the foliage and only apply it early in the morning or late at night, that is, in the mild weather avoiding the day heat.


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5. J R Peters Inc 59324 Jacks Classic Hydrangea Fertilizer, Blue (1.5 lb)

Fertilizer For Outdoor Hydrangeas


J R Peters Inc 59324 Jacks Classic Hydrangea Fertilizer Check price on Amazon


J R Pater’s Jacks Classic is one of the best hydrangea plant food, especially for blue hydrangeas. This water-soluble fertilizer helps the plant blossom and thrive with better foliage but will not change its color from white or pink to blue.


It is a good fertilizer for hydrangeas with a standard NPK ratio of 7-3-3 composed of aluminum sulfate and ammonium sulfate. It comes in a sturdy bucket with a slip-resistant grip. Since it is a slow-release fertilizer, it will take some weeks to show noticeable results.



  • Slip-resistant, moisture-locking durable metal packaging
  • Tin has an in-built flow control to ensure you do not pour more than required
  • Easy to use
  • It contains several necessary nutrients such as zinc, iron, magnesium, copper, etc.
  • It can be used for blue, pink, and white hydrangeas for healthy blooms



  • Relatively expensive
  • Some customers reported lavender flowers instead of blue


How to use it?


To make the most from this best fertilizer for hydrangea blooms, you should feed the plant with this fertilizer during the growing season. You can utilize it both at the initial sights of new blossoms and while you plant new hydrangeas.


Make sure you are careful of the proportions and the measurements. You can find the precise details on the packaging. You need to take a gallon of water and add one tablespoon of this fertilizer for hydrangeas to bloom.


Do spray it carefully around the root area, and reapply after 14-days in the first month, followed by just once in the subsequent months across the growing season.


Never spray it directly on the leaves as it could induce damage. The fertilizer must be sprayed only late in the evening (after sunset) or early in the morning (before sunrise) and never during the day.


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6. Dr. Earth 703P Organic Acid Fertilizer in Poly Bag, 4-Pound

6.Dr.Earth 703P Organic Acid Fertilizer in Poly Bag Check price on Amazon


Dr. Earth 703P is the next best feed for hydrangeas in line available in a 4lb package. This quick-release pet and human-friendly all-natural fertilizer will aid in making the soil more acidic promising much better flowers than usual.


The package suggests using azaleas, camellias, rhododendrons, maples, hollies, gardenias, hydrangeas, blueberries, evergreens, and ferns and shade plants.


The best part about this fertilizer is that it provides continuous feed for months to enhance plant growth. In addition, this is the best fertilizer for hydrangea blooms with probiotic strains of useful soil microbes and Ecto and endo mycorrhizae that make the plant more tolerant toward drought conditions.



  • 100% natural and organic
  • Fast nutrient breakdown
  • Supplements not required, if used as directed
  • Promotes growth amongst weak plant
  • Pet & human friendly


  • It has a strong pungent smell not ideal for indoors
  • Pets tend to get attracted to soil post-fertilization


How to use it?


This is the best hydrangea plant food in dry form. It can be used as a mid-season feed or during transplanting. For potted container plants, use it every 6 weeks for best results.


Check price on Amazon

7. Bonide (BND56428) – Bailey’s Color Me Blue Hydrangeas Pellets

Best Budget Pick – Bonide (Bnd56428)
7.Bonide (BND56428)- Bailey's Color Me Blue Hydrangeas Pellets Check price on Amazon


The last on our list of fertilizers is the Bonide (BND56428) – Bailey’s Color Me Blue Hydrangeas Pellets. It is the best plant food for hydrangeas when you want the blossoms to turn blue.


We mean how interesting is that – changing the bloom color and simultaneously providing the soil with minerals and proper acidic levels.


For the hydrangeas to bloom, the pH must be between the range of 5-5.8, which can be effectively achieved with this soil additive. However, it is advisable to test this fertilizer before you apply it to the soul.


Please bear in mind; this is a soil additive and not a fertilizer substitute. It has 90% elemental sulfur.



  • It helps lower the pH of the soil to the desired range – 5 to 5.8
  • Ideal to provide a vivid blue color to your flowers
  • East to apply
  • 100% organic
  • No mixing required



  • It improves the soil quality but could not be used a complete substitute for fertilizers.


How to use it? 


This best fertilizer for hydrangeas is ready to use. You don’t have to mix it. Instead, use the measuring scoop that comes along, and take a scoop of this soil additive and add to the soil—once done, water it well.


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Did You Know – The Many Varieties of Hydrangeas

Some of the popular varieties of hydrangeas include the following:

Bigleaf Hydrangeas Bigleaf Hydrangeas

Also called the French hydrangeas, it is the most prevalent hydrangea found in the US. There are three kinds of French hydrangeas:

  1. Mophead Hydrangeas – Blue, purple, or pink in color
  2. Lacecap Hydrangeas–Blue or purple in color
  3. Mountain Hydrangeas – Pink in color
Panicle Hydrangeas Panicle Hydrangeas

They start white, but eventually turn pink.

Smooth Hydrangeas Smooth Hydrangeas

They are white, but age to light green hue.

Oakleaf Hydrangeas Oakleaf Hydrangeas

These are color changing hydrangeas that go from orange to red to mahogany.


Hydrangeas Planting & Care Guide

  1. To plant hydrangeas, first, you need the right spot in your home that receives around 2 hours of sunlight in the morning and shade thereafter.
  2. Next is to test the pH of the soil and have a mix of clay soil and gypsum or well-drained loamy soil.
  3. Now add the needed fertilizer and plant your hydrangeas at a sufficient distance from each other to let them bloom.


Learn here how to care for hydrangeas along with general care tips that may help:

  1. Make sure your soil is well-drained and acidic. If the soil is alkaline, use a fertilizer that can make up for it.
  2. It is ideal to use the best fertilizer for hydrangeas in spring seasons onset and spread it across the drip line. But you should be specific about the best time to fertilize hydrangeas you have in your garden as different plant foods have different appropriate timings.
  3. Ensure they are exposed to adequate sunlight as well as get enough shade.
  4. Water them regularly to keep the soil moist, but do not overwater.
  5. They require very little pruning time-to-time. Prune at the right time to avoid removing the buds.


If your home garden has fruit bearing trees, you might be interested in best fertilizers for fruit trees and compost tea brewers.


Things Hydrangea Lovers Should Know Before Buying A Fertilizer

NPK Ratio: NPK is the ratio of the three vital nutrients – Nitrogen, Phosphorous, and Potassium in the fertilizer. The ideal NPK ratio would depend on the soil where you are planting the hydrangeas. However, it should primarily make up for the deficiencies in the soil and be in between 12-4-8 to 10-10-10.


Soil and pH: Your white hydrangeas will only yield white flowers, but if you modify the pH level in the soil using the best fertilizer for white hydrangea, you will see some changes. The higher the changes in pH, the greater would be color changes.


  1. When pH is seven – Colored hydrangeas will yield pink or deep pink flowers.
  2. When pH is more than seven – Colored hydrangeas will yield clear or light pink flowers.
  3. When pH is around six – Colored hydrangeas will yield dark pink, purple, or slightly red flowers.
  4. When pH is less than six – Colored hydrangeas will yield blue flowers.


Usage frequency: It is variable and different for different fertilizers. Some fertilizers will have to be reapplied every two months, while others require reapplication two times a year. Alternatively, some fertilizers need frequent reapplication, like once every two weeks. So, depending upon your time & schedule, select the ones that are best suited.


Type of hydrangea: If it is a smooth hydrangea, it will need fertilizer only in winters, whereas a plant with big leaves will require more frequent reapplication, especially in the initial six months of the year. The oakleaf and panicle hydrangeas will need reapplication in only June and April.


Application method: If it is a water-soluble fertilizer, you will have to mix water and spray it in the soil. When you use spike fertilizers, you can directly seep the spikes into the soil. If it is a granule fertilizer, you will have to mix it with the soil for application. Choose what’s convenient for you!


Quantity: If you have too many plants, then opt for bigger pack sizes. They will also be cheaper. Smaller ones are cheaper, but you may have to reorder them over and over again.


Ease of application: Using the fertilizer should not be an arduous task. So, pick the fertilizer that is easy to use. Typically, the ones available in pre-mixed quantities that are ready to use can be the best picks.


Price: You should pick the fertilizer that is ideal for hydrangeas and caters to the soil needs without exceeding your budget. To save money, you can invest in bigger packages.

Related: Hydrangea Lifespan


Hydrangea Fertilizers Q&A

Well, here we have got all your queries covered. Starting from ‘‘Is cow manure good for hydrangeas’ to ‘‘When is the best time to feed hydrangeas?’’ Sit back and read on!


Ques 1. How often to fertilize hydrangeas?

Ans. It goes without saying every fertilizer is different. However, regardless of the chosen fertilizer, you must fertilize it every other month, at the beginning of March.


Further, you must be aware when your area has summer and spring. So, if you live in a warmer region that barely receives spring, or if you live in a cooler region, where there is scarcely any summer, or if you live in a country that has no specific seasons, then you must fertilize your plants every other month.


However, certain fertilizers clearly specify the frequency and quantity, so use accordingly.


Ques 2. When is the best time to fertilize hydrangeas?

Ans. It is ideal to use nothing but the best fertilizer for hydrangeas in the spring season, right on the onset.

Knowing the right time to fertilize hydrangeas is important to ensure that your chosen fertilizer acts well. If you happen to over-fertilize or fertilize at the wrong time, it may burn the plant or leaves.


Ques 3. Are coffee grounds good for hydrangeas?

Ans. Yes, coffee grounds are great for hydrangeas. They have high nitrogen content and work great for foliar growth. They also boost the soil acidity and make it easy for the plant to absorb aluminum from the soil, resulting in blue blooms.


Ques 4. Will vinegar turn hydrangeas blue?

Ans. Yes, the acidity of the vinegar may turn your pink hydrangeas blue and help prevent the blue hydrangeas from turning pink.


Ques 5. How do I increase hydrangea blooms?

Ans. Prune the hydrangeas well, give them the requisite amount of fertilizer, sunlight and water, and your hydrangeas will bloom well.


Ques 6. Is chicken manure good for hydrangeas?

Ans. Often home planters ask us, is chicken manure good for hydrangeas? Well, the answer is not that simple. Though manure tends to be a good plant food for hydrangeas, it has its drawbacks, especially poultry manure. It tends to increase the soil’s pH level, which can intervene with the hydrangeas’ nutrients.


Ques 7. Is cow manure good for hydrangeas?

Ans. This is another very common question. Well, if cow manure is composted, then it can help the hydrangeas thrive.


What Is The Best Fertilizer For Hydrangeas? – Our Verdict

According to us, the overall finest pick for hydrangea fertilizer is by Miracle-Gro; of course, it is none other than the Water Soluble Miracid. It gives a good kick to the growth rate of your hydrangea plant and further ensures a healthy bloom throughout.


This list also includes other very good fertilizers for hydrangeas as per different needs. Be careful with how and how much you use the chosen fertilizer, and you can be ensured of a blossoming and a blooming garden.