Best Fertilizer For Blueberry Bushes: 10 Options Compared

#1 · Best Overall

1. Down to Earth Acid Mix

• Weight: 1 lb
• Form: Granules

Best for: Acid-loving garden granules.

Why it ranks #1: Its 4-3-6 slow-release granules are blended for acid-loving plants including blueberries, with listed spring, bloom-time, and fall application guidance.

A slow-release 4-3-6 granule blend targets acid-loving plants, including blueberries, making it a fit for gardens with several low-pH-preferring crops. Its suggested timing spans early spring, bloom, and fall, so growers can plan applications around vegetative growth, flowering, and root support.

The 4-3-6 formula is blended for acid lovers such as blueberries, raspberries, strawberries, azaleas, and rhododendrons, giving mixed plantings a shared fertilizer option. Apply it to the soil surface or mix it into soil at planting, then water it in well. The listed schedule calls for early spring and bloom applications, with fall use associated with root growth and winter resistance. This is a fertilizer, not a soil-pH adjustment product.

Skip it if you need to lower soil pH as part of the same product; True Organic Berry Food contains sulfur to help lower it.

This granule mix suits growers managing blueberries alongside other acid-loving plants and able to follow seasonal applications. Choose it for plant nutrition, not as a substitute for a separate soil-pH adjustment product.

Listed on Amazon as: Down to Earth All Natural Fertilizers Organic Acid Mix – Plant Food for Blueberries, Raspberries, Azaleas and Rhododendrons 4-3-6, 1 lb

#2 · Berry Blend

2. Espoma Berry-Tone 2-Pack

• Weight: 4 lb
• Form: Granules

Best for: Multi-berry organic feeding.

Why it ranks #2: This 4-3-4 organic granular blend is formulated for all berries, including blueberries, and is described for planting or feeding established plants.

A pack of two granule bags brings Espoma Berry-tone’s 4-3-4 analysis and 5% sulfur to growers feeding more than one berry type. It is listed for blueberries, strawberries, raspberries, and blackberries, and can be used when planting or feeding established plants.

The granule form suits growers who prefer applying a solid fertilizer to planting areas or established berry plants rather than using a liquid product. Its 4-3-4 analysis and 5% sulfur are specified alongside a blend of natural and organic ingredients enhanced with Espoma’s Bio-tone formula. Because the product is labeled for four berry types, it can serve a mixed berry garden. The pack-of-two presentation provides two bags for planting and ongoing feeding needs.

Skip it if you need a single bag for one compact blueberry planting; Espoma Berry Tone Plant Food is listed as one 4-pound bag.

Choose this for gardeners feeding multiple berry varieties who want Espoma’s granular Berry-tone in a two-bag pack. Its multi-berry scope is useful for mixed plantings, while the pack size may not suit a single small planting.

Listed on Amazon as: Espoma Organic Berry-Tone 4-3-4 Natural & Organic Fertilizer and Plant Food for All Berries. 4 lb. Bag. Use for Planting & Feeding to Promote Bountiful Harvest – Pack of 2

#3 · Microbe-Enhanced

3. FoxFarm Happy Frog

• Weight: 4 lb
• Form: Powder

Best for: Slow-release low-pH gardens.

Why it ranks #3: Designed for low-pH-loving plants including blueberries, this slow-release powder contains mycorrhizal fungi and soil microbes.

FoxFarm pairs slow-release feeding with soil microbes and mycorrhizal fungi in a powder for blueberries and other low-pH-loving plants. The 4-pound product is OMRI listed, and its gentle-feed positioning suits growers looking for sustained plant support in acid-loving garden or container soils.

The slow-release powder provides gentle feedings, an approach the product describes as avoiding overwhelming plants. Its mycorrhizal fungi and soil microbes may enhance nutrient uptake and water absorption, connecting the biological ingredients with root-zone support. The directions specify 2 tablespoons per gallon of soil for container mixing, which gives a concrete setup method for planting. With blueberries among its listed low-pH-loving plants, it also fits gardens containing azaleas and rhododendrons.

Skip it if you want a liquid concentrate for direct soil feeding; Leaves & Soul Blueberry Fertilizer is a concentrated liquid.

This powder suits growers preparing container soil or feeding a low-pH garden with blueberries, azaleas, or rhododendrons. Its stated container directions involve mixing powder into soil, so it best fits planned planting or soil preparation.

Listed on Amazon as: FoxFarm Happy Frog Acid Loving Plants Fertilizer – Slow Release Fertilizer for Azaleas, Rhododendrons, Blueberries & More – Contains Mycorrhizal Fungi & Soil Microbes – OMRI Listed – 4 lb

#4 · Soil pH Support

4. True Organic Berry Food

• Weight: 4 lb
• Form: Granules

Best for: Organic berry-bed soil support.

Why it ranks #4: This organic granular berry food includes sulfur to help lower soil pH and is specifically described for berries and other acid-loving plants.

Sulfur in True Organic Berry Food helps lower soil pH, pairing a soil-condition focus with organic granular nutrition for berry plants. The 4-pound bag is listed to cover 58 square feet and is formulated for acid-loving plants as well as berry harvest support.

The granular blend combines sulfur, which helps lower soil pH and improve micronutrient availability, with nutrient-rich ingredients including seabird guano, shrimp and crab shell meal, and other organic inputs. That makes it relevant to growers seeking both berry feeding and a soil-pH benefit from one product. Its 58-square-foot coverage offers a stated area for planning applications, while the listed use includes berry plants and other acid-loving plants. The formula also includes 4% calcium.

Skip it if you need a slow-release formula with soil microbes; FoxFarm Happy Frog Acid Loving Plants Fertilizer includes microbes and mycorrhizal fungi.

Choose this granular blend if you want organic berry nutrition alongside sulfur’s soil-pH support and can plan around the stated 58-square-foot coverage. It suits berry beds and other acid-loving plants, not a liquid-feeding routine.

Listed on Amazon as: True Organic Berry Food – Organic Fertilizer for Acid-Loving Plants – 4lb Bag Covers 58 Sq. Ft.

#5 · Defined NPK

5. Perfect Plants Liquid Blueberry

• Weight: 8 oz
• Form: Liquid

Best for: Measured multi-berry liquid feed.

Why it ranks #5: Its 8-8-8 liquid formula is made for blueberries and other berry plants, with directions specifying two teaspoons per gallon of water.

A 2-teaspoon-per-gallon mixing rate makes the 8-ounce Perfect Plants bottle easy to portion, and the listed amount lasts multiple growing seasons. Its 8-8-8 formula is aimed at blueberries and other acid-loving fruit bushes and vines, including blackberries, raspberries, and strawberries.

The measured rate of 2 teaspoons per gallon gives growers a clear mixing quantity for preparing liquid feed, while the 8-ounce bottle is stated to last multiple growing seasons. Its balanced 8-8-8 NPK ratio supplies essential nutrients for blueberries and other listed acid-loving berry plants, allowing one formula across a mixed planting. The product is also described as supporting berry yield, size, and flavor, which links routine feeding to fruit production goals.

Skip it if you prefer a ready-to-spread granular product; FoxFarm Happy Frog is a slow-release powder for low-pH-loving plants.

This liquid suits berry growers who want a measured dilution rate and one 8-8-8 formula for several acid-loving fruit plants. It requires mixing with water, so it fits gardeners comfortable preparing each application.

Listed on Amazon as: Perfect Plants Liquid Blueberry Fertilizer, 8 oz, Acidic Berry Plant Food

#6

6. TPS Nutrients Blueberry Fertilizer

• Weight: 8 oz
• Form: Liquid

Best for: Blueberry-focused liquid feeding.

Why it ranks #6: This liquid fertilizer is specifically formulated for blueberry plants and supports fruit development, fresh shoots, leaves, and root systems.

A blueberry-specific liquid formula links fruiting support with root development, giving growers one plant food aimed at both berry production and the bush’s foundation. It is suited to blueberry bushes and gardens, with listed support for flowering, fruit set, fresh shoots, leaves, and healthy roots as plants grow.

This liquid fertilizer focuses on blueberries rather than a broad range of unrelated plants, which makes its stated use straightforward for a dedicated blueberry bed. Its support for flowering and fruit set addresses the path to a harvest, while the listed benefits for fresh shoots, leaves, and roots cover ongoing plant growth. Root support is also linked to better water and nutrient uptake. The 8-ounce bottle is a compact option for growers who want a blueberry-focused product.

Skip it if you want a larger stated concentrate yield; HiThrive Blueberry Fertilizer makes 16 gallons from its 16-ounce bottle.

Blueberry growers seeking a focused liquid feed for flowering, fruit development, foliage, and roots may find this a suitable fit. Its 8-ounce size is better suited to a smaller supply than a larger-volume concentrate.

Listed on Amazon as: Blueberry Fertilizer – Liquid Plant Food for Bigger Berries, Better Fruit Production & Stronger Root Development, 8 oz

#7

7. Espoma Berry-Tone

• Weight: 4 lb
• Form: Granules

Best for: Single-bag berry feeding.

Why it ranks #7: The 4-3-4 organic granules are for all berries, including blueberries, and can be used when planting or feeding established plants.

One 4-pound bag of Espoma Berry Tone provides a 4-3-4 granular fertilizer with 5% sulfur for gardeners feeding berries without choosing the two-pack listing. It is labeled for blueberries, strawberries, raspberries, and blackberries, and can be used at planting or on established plants.

The granular form is suited to applying around berry plantings or incorporating into a planting workflow, while the listed use covers both new and established plants. Its natural and organic ingredient blend is enhanced with Espoma’s Bio-tone formula, and the 4-3-4 analysis includes 5% sulfur. Since the product is labeled across four berry types, it can support a mixed berry garden. The single 4-pound bag keeps the purchase to one listed unit.

Skip it if you want two bags for a larger berry-feeding supply; Espoma Organic Berry-Tone 4-3-4 is listed as a pack of two.

Pick this single-bag option for a berry garden needing Espoma’s granular 4-3-4 formula across new or established plants. It is a sensible fit when one 4-pound bag matches the planting, rather than a two-bag supply.

Listed on Amazon as: Berry Tone Plant Food, 4-3-4, 4-Lbs.

#8

8. HiThrive Blueberry Fertilizer

• Weight: 1.3 lb
• Form: Liquid

Best for: Concentrated blueberry liquid.

Why it ranks #8: This liquid is formulated for blueberry varieties and includes nitrogen, phosphorus, potassium, and micronutrients to support roots, leaves, and fruit.

The 16-ounce bottle mixes into 16 gallons of blueberry fertilizer, giving growers a stated dilution yield for planning repeated liquid feedings. HiThrive’s formula combines nitrogen, phosphorus, potassium, and micronutrients, with listed support for leaves, roots, and sweeter, plumper berries across blueberry varieties.

A stated yield of 16 gallons from the 16-ounce bottle helps growers estimate how much mixed fertilizer the concentrate can provide. The nutrient roles are also specified: nitrogen supports vibrant leaves, phosphorus stronger roots, and potassium sweeter, plumper berries. Essential micronutrients round out the formula, while the listed suitability spans highbush, rabbiteye, and southern highbush varieties. This is a blueberry-focused liquid product, so it fits growers who want to mix a concentrate rather than apply granules.

Skip it if you need a ready-to-apply granular blend; Espoma Berry Tone Plant Food comes as granules for berry plantings.

This concentrate suits blueberry growers comfortable mixing liquid fertilizer who want a stated 16-gallon yield and support for foliage, roots, and fruit. Keep its 16-ounce size in mind when planning feeding for a larger planting.

Listed on Amazon as: Blueberry Fertilizer for Sweet, Plump Fruits, 16oz

#9

9. Leaves & Soul Blueberry Fertilizer

• Form: Liquid

Best for: Concentrated 6-4-6 blueberry feed.

Why it ranks #9: The blueberry-labelled liquid fertilizer has a 6-4-6 NPK formula and is described as supporting roots, foliage, and flowering.

A balanced 6-4-6 liquid concentrate delivers nutrients directly to the root zone, giving blueberry growers a targeted feeding format. The 8-ounce Leaves & Soul bottle is presented as blueberry plant food for root strength, foliage, leaf development, flowering, and vigorous overall growth.

The 6-4-6 NPK ratio gives this liquid a specified nutrient balance, while the concentrated formula is described as fast-absorbing and delivering nutrients to the root zone. That combination suits growers seeking a direct liquid feeding workflow for blueberry plants. The listed support spans roots, greener foliage, leaf development, and flowering, covering both plant growth and fruiting stages. An 8-ounce bottle offers a compact size, and the product is also available in a 32-ounce size.

Skip it if you want a slow-release powder rather than liquid feeding; FoxFarm Happy Frog Acid Loving Plants Fertilizer is a slow-release powder.

Blueberry growers wanting a concentrated liquid with a specified 6-4-6 balance may find this format convenient for root-zone feeding. Consider the 8-ounce bottle size against the available 32-ounce option when planning coverage.

Listed on Amazon as: Leaves & Soul Blueberry Fertilizer 6-4-6 Liquid Blueberry Plant Food, 8 oz

#10

10. Bloom City Acid-Loving Fertilizer

• Weight: 2 lb
• Form: Liquid

Best for: Acid-loving container gardens.

Why it ranks #10: This liquid supports acid-loving plants including blueberries, but its product description is broader and does not give an NPK analysis.

Bloom City combines liquid nutrients with a soil-acidifier focus for plants that thrive in lower-pH conditions, including blueberries. The 32-ounce bottle is suited to growers tending acid-loving plants in garden beds or containers, while its listed scope also includes hydrangeas and azaleas.

The formula is intended for acid-loving plants, so blueberry growers can use it alongside compatible hydrangeas and azaleas in garden or container settings. Its liquid form is diluted and applied to plant soil according to the frequency suggested on the packaging, making the feeding workflow a mix-and-apply routine. The product description highlights support for roots, foliage, and consistent nutrient availability. Its soil-acidifier positioning makes it relevant when choosing a formula for lower-pH-preferring plants.

Skip it if you need a fertilizer for a broad range of berry types; Espoma Berry Tone Plant Food is listed for four berry varieties.

This fits gardeners feeding blueberries alongside other acid-loving plants in beds or containers. Its acid-loving scope is the key boundary: select it for compatible plants and follow the package’s dilution and application-frequency guidance.

Listed on Amazon as: Bloom City Acid-Loving Plant Fertilizer – Liquid Soil Acidifier & Nutrient Formula for Blueberries, Hydrangeas & Other Acid-Loving Plants, 32 oz