4 Best Fertilizers For Endless Summer Hydrangeas [And How To Use Them]

Endless Summer Hydrangeas are different from others because they bloom longer than others. These flowers prefer full sun with well-drained, moist soil and are known for being acid-loving plants.

It is best to choose the right fertilizer for your hydrangeas to thrive. If you are searching for available fertilizers for your Endless Summer, we researched what the best ones are for you.

Our top four fertilizers for Endless Summer Hydrangeas are:

  • Miracle-Gro 1000701 Pound Plant Food For Azalea, Camellia, Rhododendron
  • EZ-gro Hydrangea Fertilizer
  • Jobe's Organic Soil Acidifier
  • Espoma Organic Holly-tone Plant Food

These fertilizers are organic and have good pH levels, which hydrangeas love. Providing your plants with good fertilizers will help them get stronger to survive harsh weather conditions.

Would you like to learn about which fertilizers work best for your plants? Are you searching for more information about hydrangeas? We will explore all of these in detail throughout this post.

Blooming vibrant purple Hydrangea flowers in pot, 4 Best Fertilizers For Endless Summer Hydrangeas [And How To Use Them]

Best Fertilizers For Endless Summer Hydrangeas You Should Try

As mentioned above, we listed the best fertilizers you can use for Endless Summer Hydrangeas.

Hydrangea macrophylla

1. Miracle-Gro 1000701 Pound Plant Food For Azalea, Camellia, Rhododendron

If you are looking for a fertilizer that helps acid-loving plants to have beautiful blooms and lush foliage, this product is the right one.

It works best for gardenia, camellia, hydrangea, orchids, azaleas, and many more.


Ideal to use together with a garden feeder or watering can. Apply every 1 to 2 weeks for fast results.

Using Watering Can

Turquoise metal watering can

  • Mix one teaspoon of plant food with one gallon of water for indoor plants. For outdoors, mix one tablespoon of fertilizer for each gallon of water.
  • Get the watering can and fill it with mixed plant food.
  • Water your plant. Wet the base of the plants for best results. Check the product label for the instructions for the details of the coverage area.
Using Garden Feeder

Plastic bottles of miiracle gro garden feeder on store shelf

  • Fill the feeder with fertilizer.
  • Attach the feeder to your garden hose. Turn the water on.
  • Turn the yellow spray head of the feeder to choose the desired spray pattern.
  • Feed and water the plants. Soak the base of the plants for the best results. Check the product label for further instructions.

Click here for a Miracle-Gro fertilizer on Amazon.

2. EZ-gro Hydrangea Fertilizer

EZ-gro formulated Hydrangea Fertilizer for garden flowers; ideal for hydrangeas, azaleas, rhododendrons, and many more.

It provides nutrients to indoor and outdoor plants for healthy, abundant flowers. This fertilizer reduces the soil's pH level, which traps trace minerals and iron for your plants to absorb.


  • Mix Hydrangea Fertilizer in water before application.
  • The package includes a measuring cup. Follow the directions on the packaging as instructed.

Try this hydrangea fertilizer on Amazon.

3. Jobe's Organic Soil Acidifier

Soil Acidifier gives all-natural sulfur and decreases soil alkalinity for acid-loving plants. It helps darker green growth. This fertilizer is ideal for blueberries and hydrangea.


  • Test soil pH first before applying. You can use a soil pH tester.
  • Pour 6 pounds and apply at planting.
  • To maintain the soil's pH level you desire, apply the Soil Acidifier every eight weeks or as needed.
  • Follow the manufacturer's instructions on the packaging.

Here's an organic soil acidifier on Amazon.

4. Espoma Organic Holly-tone Plant Food

This plant food is all-natural and organic, specially made for hydrangeas, azaleas, blueberries, rhododendrons, evergreens, and many more.

It contains organic and the finest natural ingredients, which are safe for the environment.


  • Use Holly-tine Plant Food during spring and fall for flowers and shrubs. For blueberries, apply during early and late spring.
  • Directly apply around the plant's drip line and water adequately.
  • This plant food does not need mixing and is ready to use.
  • Follow the instructions on the packaging.

Get this Holly-tone plant food on Amazon.

What Soil Is Best For Endless Summer Hydrangea Macrophylla?

Mixing vermiculite granules pellets with black gardening soil improves water retention

Potting soil mixes are much better for Endless Summer Hydrangea than ordinary garden soil. Some soil mixes contain slow-release fertilizers, which help the plants grow in their first year.

Listed here are the best potting soil for hydrangeas:

Miracle-Gro Potting Mix

This potting mix is formulated for varieties of plants in containers. The product contains coconut coir that clutches and releases water to help the soil re-wet.

Take a look at this potting mix on Amazon.

Coast Of Maine Organic Natural Garden Compost Potting Soil

It is specially blended with a low-pH formula for acid-loving plants like azaleas, rhododendrons, hydrangeas, ferns, hollies, and many more.

Composed of natural ingredients: bark, peat moss, and compost blended for a nutrient-rich growing medium.

Click here to check out this compost potting soil on Amazon.

FoxFarm Ocean Forest Potting Soil Mix

This potting soil mix contains 6.3 to 6.8 pH levels, which is ideal for optimum fertilizer intake. This potting soil mix has an aerated and light texture—perfect for outdoor and indoor plants.

Try out this potting soil mix on Amazon.

Minute Soil Compressed Coco Coir Fiber Grow Potting Soil

Coco Coir Fiber Grow is untreated pure raw coconut coir compressed into light blocks that will expand when you add water. This potting soil holds water for healthier roots and plant growth.

Best used for flowers, house plants, herbs, wheatgrass, vegetables, and many more.

Get this Coco Coir Fiber Grow on Amazon.

Verdana Coconut Fiber Potting Mix

Formulated with optimum pH balance, Coconut Fiber Potting Mix is best for easy growth of plants. This potting soil replaces peat moss.

It is ideal for orchids, succulents, annuals, perennials, flowering plants, vegetables, and more. This product is 100% natural and has low salt content. You can use this potting mix for indoor and outdoor plants.

See this Coconut Fiber Potting Mix on Amazon.

When Should You Fertilize Your Endless Summer Hydrangea?

Endless Summer Hydrangea blooms in early summer or late spring, so applying fertilizer in early spring is best to prepare for the blooming seasons.

How Much Sunlight Do Endless Summer Hydrangeas Need?

Hydrangea macrophylla hedge in Powerscourt garden

Two hours under the sun is enough for most hydrangeas during hot weather, but varieties like Endless Summer and Bloomstruck can tolerate heat from 7 or 8 hours of direct sunlight in zone 4.

What Is The Difference Between Endless Summer Hydrangea And All Summer Beauty?

Like Endless Summer Hydrangea, All Summer Beauty can be in the color of blue or pink, but Endless Summer has vibrant, richer color than All Summer Beauty, which has partial white flowers.

All Summer Beauty is less cold-tolerant and can thrive in zones 5 to 9, while Endless Summer can thrive in zones 4 to 9.

Are Hydrangeas Cold-Hardy?

Endless Summer Hydrangeas can survive in zone 4 if they have enough sunlight and do not need winter protection in the garden. The only exception is when the plants are grown in containers.

Stop applying fertilizers in July or August, and do not prune them during fall if planted in containers to prepare the plants for overwintering.

When Endless Summer Hydrangeas Bloom?

Start planting your Endless Summer Hydrangeas in early spring or fall. These flowers have a long growing season and bloom from June to September.

The flowers bloom in pink or blue, which depends on the soil conditions.

Do You Deadhead Endless Summer Hydrangeas?

Endless Summer Hydrangeas should be deadhead once the bloom season ends and dry out. Deadheading the flowers have benefits in stimulating the repeat blooming and the plant's health.

There are still concerns about deadheading because some people are confused between pruning and deadheading, which could lead to hydrangeas not blooming.

Deadheading is not pruning; it removes the spent blooms of the hydrangea, leaving 1/3 of the plant to revive. Below are instructions on how to deadhead your hydrangea:

  1. Prepare sharp scissors or pruning shears.
  2. Look for spent blooms along the old stem and the new sets of leaves. Spent flower blooms are faded or dried out.
  3. Cut the portion right above the fresh set of leaves. Do not cut at the bottom of a new set of leaves because you may risk cutting the new blooms.
  4. Take a look at dried stalks down to the base of the plant. When those parts have no leaves or green growths, you can cut those parts because they will no longer produce new leaves and blooms.

To Finish

Summing up, applying proper fertilizers is essential for your Endless Summer Hydrangeas. Fertilizers with good pH levels provide balance and replace lost nutrients to thrive and bloom even during harsh environments and weather conditions.

Made it to the end? Check out these articles:

How To Overwinter Hydrangeas?

How Long For Hydrangea To Bloom?

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