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How & When to Fertilize Hydrangeas for Brighter Blooms?

Boost your hydrangeas' bloom with our guide on fertilizing for brighter colors and lush growth, ensuring vibrant and healthy flowers all season.
Home » Blog » How & When to Fertilize Hydrangeas for Brighter Blooms?

Every flower is pretty and has its own quality and beauty details. Hydrangeas are flowering plants that not only make your event and party location glow differently but also provide various health benefits. Just like other plants, hydrangeas, too, require proper food and care to bloom brighter. They are significantly the easiest to cultivate plants because of their in-built quality of tolerance to any soil type.

Also, they portray different colors based on their acidic or alkaline regulator, such as vibrant pink, frosty white, blue, etc., and at times, they are together on one plant. Therefore, it is vital to ensure that hydrangeas get the best fertilization for their brighter blooms. Let’s throw some light on its crucial key points.

What are Hydrangeas?

Hydrangeas are flowering plants that have different vibrant colors, such as blue, pink, white, etc. They belong to the genus Hydrangea, a biological classification that further encompasses around 70-75 species of scrubs, vines, and small trees. 

Their flower petals are large and broad with a soft and velvety texture. They are also renowned for their voluminous and lush appearance. The color of their petals largely depends upon soil PH and the presence of aluminum ions. 

What are Hydrangeas

Their Natural Habitat

Hydrangeas are found almost everywhere. However, their natural habitat lies in the regions of Asia (Korea, China, Japan) and America (South & North America). They are grown in streams, rocky or even drier areas. 

One of their main requirements is moderate climate and temperature since extreme temperatures may cause them to either sunburn or frostbite.

Purpose of Hydrangeas

Every plant or flower has its purpose and benefit. Hydrangeas aims to promote beauty and aesthetics. They are specifically used as:

  • Wedding hall decorations
  • Gardens
  • Landscapes
  • Aesthetic backgrounds for photoshoots
  • Festive decorations( such as Halloween and Christmas)

Planting of Hydrangeas

Hydrangeas are mostly preferred to be planted under partial sunlight and some good afternoon shade. Some kinds of hydrangeas are even prone to full sunlight. 

They grow naturally and beautifully in fertile soil with plenty of moisture. Try adding aged manure, which proves to be the best for enriching soil for hydrangea planting.


How to Plant Hydrangeas Correctly?

Hydrangeas are planted well on fertile soil. Some other ways which are the most considerate are as follows:

1) Identify their Distance Requirement

Each hydrangeas plant requires 3-10 feet of distance to grow and blossom correctly. It all depends upon their size, length, etc factors. Also, you must ensure that your plant requires an open space to mature. So study about them accordingly.

2) Inspect the Root Ball Precisely

Gently take out the hydrangeas from the container and ensure that none of its roots gets damaged. Focus on the root ball which can cause damage to your plant, and precisely check that area. So, none of the disease or damaged or rotten soil disrupts your plantation. 

3) Dig a Deep Hole

A deep hole is as important as the root ball. Your plant’s stem should have an even space to adjust, breathe, and grow. It should be leveled properly with the top of the planting hole. It will allow proper air exchange and avoid water pooling around the stem.

4) Set-up Evenly

The last step is to make sure your plant is fitted well into the soil. Focus on spreading the soil evenly and water your plant on a regular basis. This would ensure your plant’s daily growth and well-being. 

When to Plant Hydrangeas?

Hydrangeas have an optimum time to be grown and beautifully blossom in either autumn or spring. Both of these seasons portray moderate climates and temperatures. Let’s study about them briefly:

1) Autumn Season 

Autumn occurs before the onset of winter. During this time, the weather starts to cool, and the temperature starts to drop. 

Growing hydrangeas in autumn is favorable for the plant to receive moisture from the soil. This helps in establishing a strong grip on the plant’s roots in the soil.

Autumn Season

2) Spring Season

At times, if the Autumn season doesn’t prove to be fruitful for the hydrangea’s growth, the spring season rises as the next better option for the growth of your delightful plant. 

Since this season portrays the onset of summer and the last frost, it allows the plant to happily gloom with warmer sunlight.

3) Identify Frost Timing

Be it autumn or spring, identifying the frost timing should be your priority. If you plan to set up your plant during autumn, then you must buck up before the first frost of the year arrives. If in spring, then after the last frost. This would help your plant to grow stronger and healthier.

4) Healthy Environment

Seasons should be on one side, and a healthy environment for your plant should be on the other side. Even though you must know how to look after your plant, still keep in mind that:

  • The weather and temperature are suitable for your plant. Plants are sensitive to climate change and extreme weather conditions (depending upon their type). Thereby, you can provide your plant with proper care.
  • You are providing enough space for your plant to develop and grow. Its development and maturity depend upon its open space to breathe. Make sure to give it a sufficient place where it can grow well.
  • Their location should be healthy without any heap of stress on them. There shouldn’t be any element that can harm your plant. Also, no rotten or dead soil should be provided to plants for their nourishment.

Why Plant Hydrangeas?

Hydrangeas are an absolute beauty but also pose various health benefits of which many of you are unaware, such as:

1) Herbal Medicine Used to Treat Urinary Conditions

Hydrangeas take back their origin from Native American and Chinese herbal traditions. They are believed to treat your urinary tract infections and support urinary health and functions. Its properties also protect your body from kidney stones.

2) Treat Prostate and Bladder Infections

Some properties of hydrangeas root are believed to flush out bacteria and toxins elements from the urinary tract. It’s a healthy treatment for the body even today.

3) Protection of Kidneys

It promotes healthy urine flow and reduces inflammation in the body. Also, it provides protection against harmful elements that can disrupt your healthy kidney functioning. 

How to Fertilize Hydrangeas?

Hydrangeas are the most beautiful flower plants and are made to blossom at your wedding hall, at a Christmas party, or just on your lawn. Your plant requires a proper plantation to grow, and it also requires the right amount of fertilizer and nutrition to develop faster and healthier.

For Healthy Growth and Size

1) Use organic slow-release fertilizer for roses (15-10-10 or 10-5-5 formula). It helps in giving the plants the right amount of nutrients they require to grow in size and quality, which helps them blossom. 

This fertilizer focuses more on its blooming and size development. 

2) Use organic slow-release fertilizer for all purposes, which works as an even balance to manage a 10:10:10 for your plant. This would give your tiny pot a boost of healthy growth, but it might lack a bit from that of a rose fertilizer

Since its main focus is the overall health and development of the plant. 

How to Fertilize Hydrangeas

For Bloom Color Change

Hydrangeas’ bloom color change depends upon the soil’s acidic or alkaline nature. For instance, you can try garden lime to change your bloom color to pink and aluminum sulfate to showcase a touch of a bluish color. 

All of these ensure that your bloom color will change and glow differently. But make sure to be patient and avoid doing any harm to your plant. For a better understanding, you can refer to YouTube videos based on bloom color change.

When to Fertilize Hydrangeas?

Depending on the place where they are planted, hydrangeas are required to be fertilized accordingly. Their growth structure depends on the place they have been planted and how they are growing.

For instance, hydrangeas planted on the ground would be fertilized differently than those grown in containers.

When to Fertilize Hydrangeas

For hydrangeas planted on grounds, there should be a three-time fertilization process which includes:

1) During Early Spring, When the Plants are Just Leafing Out



1) Early growth of the plant

1) Plant’s Nutrient loss

2) Healthy Root development 

2) Overstimulation of flower

3) Flowering betterment


2) Early in May to Boost their Production for Upcoming Summers



1) Plant health

1) Over Fertilization of plant


2) Increases color and size

2) Much Cost and effort

3) Promotes flowering


3) Late June or Early July, When you Ensure your Plants have Finished Stronger



1) Summer growth

1) Risk of stress


2) Promotes root growth

2) Reduction of effectiveness

3) Promotes flowering

3) Environmental pollution

4) For Hydrangeas, you had Overwintered in Containers:

  • Make sure to give them fertilizers earlier in spring and then in May for healthy production.



1) Nutrient uptake.

1) Risk of overfertilization


2) Enhances and embraces flower growth

2) Damage to environment 

3) Keeps plants healthy

3) Much expensive 

  • You are not required to fertilize them again anytime during the year



1) Cost Saving

1) Nutrient Deficiency


2) Easy to Maintain

2) Reduced growth

3) No environmental impact

3) Not much control of the gardener

For Hydrangeas

5) For Newly Planted Hydrangeas in Containers:

  • Suppose your potting soil already contains a slow-release fertilizer. In that case, it means that your soil already contains enough rich nutrients for your plant, which ensures its proper growth and development. In that case, there’s no need for an additional one.



1) Convenient and provides nutrients timely.

1) Expensive


2) Steady supply ensures a balance of growth and development of plants

2) Limited control of gardeners over the plants.

3) Reduces risk of over-fertilization

3) Not much customization

  •  If it lacks fertilizer, then you must require it to provide it with proper fertilization so that it gets proper nutrition and a healthy boost for your plant’s growth.



1) Gardeners customize nutrients according to their needs.

1) Risk of overfertilization


2) Flexibility based on the environment, different climate types, etc.

2) Increases time and effort by the gardener or whoever looks after the plant.

3) Nutrient boost and early development



To conclude, we can focus on two points:

  • Growth of Plants
  • No harm to the environment

If we keep both of these in mind, we can ensure that our plants are growing well without any damage to our environment. Hydrangeas are the prettiest flower plants which focus on ornamental beauty. 

Its fertilization can be done by using organic slow-release fertilizer for roses or organic slow-release fertilizer for all purposes. Both of them have their advantages and disadvantages. The same goes for the use of fertilizers, depending upon their planting.

So, in the end, hydrangeas can bloom whenever they are getting the right amount of fertilizer and even space to grow and establish themselves. Make sure to connect with high-quality fertilizer suppliers to ensure the right amount of nutrients is in your hydrangeas. 

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