The 5 Best Fertilizers for Blueberries

Not all fertilizers are created equal. The difference between the best fertilizers out there and average fertilizers is drastic. It can mean the difference between healthy sweet fruit and small flavorless fruit.

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You already know that blueberry bushes need fertilizer, but do you know the special needs of blueberries? To ensure the proper development for your blueberries, you will want the best fertilizer out there. Unfortunately, not all fertilizers are the same and some use higher quality ingredients compared to others. I help take the guess work out of which fertilizer to use. 

Here are the best blueberry bush fertilizers that we recommend.


Comparing Our Top 3 Recommendations for Blueberry Fertilizers

The Best Blueberry Fertilizers

These are the best fertilizers for blueberries. They use quality ingredients and are much better than the other fertilizers on the market. Please keep reading below to learn more about each one. 

Best Fertilizers for Blueberry Bushes

This organic food encourages bigger and healthier berries. Blend it into the top layer of soil for existing blueberries around the dripline. Water following application. Apply first in early spring and repeat as needed throughout the season, no more often than every six to eight weeks. Often, less is more when fertilizing berries, so avoid heavy and frequent use. This berry food results in bigger berries and a large crop.

Mix with water per instructions and feed into moist soil. Use a light amount with each watering for young bushes. This product lowers soil pH in the developing root zone, resulting in a happy, top-producing plant. Foliage grows greener, good for those blueberry bushes that double as ornamentals in the landscape. At harvest time, bigger and juicier berries appear.

Blueberries growing in the landscape need a soil pH between 4-5.5. This is called acid soil. If you’re unsure of your soil’s pH, take a soil test. You will often need to lower the pH when growing berries. Epsoma Holly tone can help with this chore. Mix this granular food into the top layer of soil around your bushes. Water in. Healthy, juicy berries follow. Expect a full crop the third year after planting. This product includes Bio-tone Microbes that provide long-lasting slow-release feeding. It is often used by professional gardeners.

This is a granular product to work into the top level of soil around the dripline of your bushes. If you’re just planting, mix this organic food into the soil and surround the new plants. For existing blueberries, feed first in early spring. Then apply one and a half cups every four to six weeks, for bigger berries in abundance. This is a must-have to keep your berries organic. Jobe also works great on strawberries and other fruiting bushes. This product enjoys a five-star rating on Amazon.

Mix this food for acid-loving plants into the soil around the dripline or incorporate it into the soil for new bushes when planting. Watch your bushes thrive. When using this organic food, you’re building the quality of the soil for years to come. You’re enhancing soil fertility while stimulating the growth of roots, foliage, and fruit. Not only does this 100% natural fertilizer blend keep your blueberries organic, bigger berries and crops result from its’ use. Apply in spring when your bushes sprout foliage.

How to Produce Plump Healthy Blueberries

I love the sensation of biting into a plump, firm, juicy blueberry and I bet you do too! Producing the perfect berry is hard work, but it can be done with the proper care. Blueberries are a favorite crop for many gardeners. They’re simple to grow and produce in most areas of the U.S. Five different types are available, making it easy to find the perfect bushes for your area. To produce blueberries, blueberry bushes need the correct amounts of water and nutrients. Let’s dive into some tips in regards to choosing a fertilizer and also raising your blueberry bush.

Look for the Proper Nutrients

Blueberries need fertilizers with an N-P-K ratio of about 1-1-1. Blueberry bushes also need iron and magnesium. If the fertilizer you buy does not end up delivering enough magnesium, make sure to supplement with MgSO4 which can be found in your local pharmacy sold under the name of Epsom salts. If you buy one of the fertilizers above, you will not need to be supplementing with additional nutrients.

Blueberry Bushes Thrive in Acidic Environments

There is more to consider than just the N-P-K ratio. Blueberry bushes also prefer higher acid in the soil. They need an acidic soil to allow their roots to properly take up the nutrients in the soil. The best fertilizers for blueberries will have acidic ingredients to make the soil less basic.

When to Fertilize

You should strive to fertilize your blueberry bushes in early spring before their leaves have fully grown in. Make sure to follow the manufacturer’s instructions when fertilizing, but generally blueberries only need to be fertilized once per year.

How to Start Growing Blueberries

Blueberries grow from seed or from cuttings, but it takes many years for these to produce berries. Plant two to three-year-old bushes to get a crop more quickly. Expect a full crop in the third year of production. If you’re new to growing blueberry plants, research your geographic location for the best planting times and care for them.

Plant at least two bushes for the purpose of pollination. Plant in rich, well-draining soil thoroughly amended with finished compost. Keep the soil moist and remember to fertilize. The following are among the most highly rated types of food to encourage bigger, more abundant, and juicier berries.

Bottom Line

Again, I recommend buying the Winchester Gardens Organic Fertilizer. If you want the best blueberries, it’s what you will want. Too many fertilizers that you find at your local gardening store simply will not deliver the optimal nutrients. Don’t be one of the blueberry growers that finds that out too late.

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About the author: Carley Miller is a horticultural expert at TheGreenPinky. She previously owned a landscaping business for 25 years and worked at a local garden center for 10 years.

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